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Utah State University
1.
Jackson, Kevin.
Blind Front-end Processing of Dynamic Multi-channel Wideband Signals.
Degree: MS, Electrical and Computer Engineering, 2016, Utah State University
URL: https://digitalcommons.usu.edu/etd/4692 
► In wireless digital communications, the sender and receiver typically know the modulation scheme with which they will be communicating. Automatic modulation identification is the…
(more)
▼ In wireless digital communications, the sender and receiver typically know the modulation scheme with which they will be communicating. Automatic modulation identification is the ability to identify the modulation in a communication system with little to no prior knowledge of the modulation scheme. Many techniques for modulation identification operate on many assumptions including that the input signal is base-banded, the carrier frequency is known and that the signal is narrow-band (i.e. neighboring signals in the wide-band are excluded). This work provides the blind processing of an arbitrary wide-band signal to allow such assumptions. The challenges of such a front-end or pre-processor include detecting signals which can appear at any frequency, with any band-width at any given time and for any arbitrary duration. This work takes as its input a wide-band signal with a random number of sub-signals, each turning on and o at random times and each at random locations in the frequency domain. The output of the system is a collection of signals corresponding to each sub-signal brought down to base-band, isolated in the frequency and time domains, nominally sampled and with estimates of key parameters.
Advisors/Committee Members: Jacob Gunther, ;.
Subjects/Keywords: Adaptive; Cognitive Radio; Digital Communications; Modulation; Receiver; Electrical and Computer Engineering; Signal Processing
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APA (6th Edition):
Jackson, K. (2016). Blind Front-end Processing of Dynamic Multi-channel Wideband Signals. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/4692
Chicago Manual of Style (16th Edition):
Jackson, Kevin. “Blind Front-end Processing of Dynamic Multi-channel Wideband Signals.” 2016. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/4692.
MLA Handbook (7th Edition):
Jackson, Kevin. “Blind Front-end Processing of Dynamic Multi-channel Wideband Signals.” 2016. Web. 04 Mar 2021.
Vancouver:
Jackson K. Blind Front-end Processing of Dynamic Multi-channel Wideband Signals. [Internet] [Masters thesis]. Utah State University; 2016. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/4692.
Council of Science Editors:
Jackson K. Blind Front-end Processing of Dynamic Multi-channel Wideband Signals. [Masters Thesis]. Utah State University; 2016. Available from: https://digitalcommons.usu.edu/etd/4692
Utah State University
2.
Yin, Li.
Adaptive Background Modeling with Temporal Feature Update for Dynamic Foreground Object Removal.
Degree: MS, Electrical and Computer Engineering, 2016, Utah State University
URL: https://digitalcommons.usu.edu/etd/5040
► In the study of computer vision, background modeling is a fundamental and critical task in many conventional applications. This thesis presents an introduction to…
(more)
▼ In the study of computer vision, background modeling is a fundamental and critical task in many conventional applications. This thesis presents an introduction to background modeling and various computer vision techniques for estimating the background model to achieve the goal of removing dynamic objects in a video sequence.
The process of estimating the background model with temporal changes in the absence of foreground moving objects is called adaptive background modeling. In this thesis, three adaptive background modeling approaches were presented for the purpose of developing \teacher removal" algorithms. First, an adaptive background modeling algorithm based on linear adaptive prediction is presented. Second, an adaptive background modeling algorithm based on statistical dispersion is presented. Third, a novel adaptive background modeling algorithm based on low rank and sparsity constraints is presented. The design and implementation of these algorithms are discussed in detail, and the experimental results produced by each algorithm are presented. Lastly, the results of this research are generalized and potential future research is discussed.
Advisors/Committee Members: Jacob Gunther, ;.
Subjects/Keywords: signal processing; digital image processing; computer vision; Engineering
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APA (6th Edition):
Yin, L. (2016). Adaptive Background Modeling with Temporal Feature Update for Dynamic Foreground Object Removal. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/5040
Chicago Manual of Style (16th Edition):
Yin, Li. “Adaptive Background Modeling with Temporal Feature Update for Dynamic Foreground Object Removal.” 2016. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/5040.
MLA Handbook (7th Edition):
Yin, Li. “Adaptive Background Modeling with Temporal Feature Update for Dynamic Foreground Object Removal.” 2016. Web. 04 Mar 2021.
Vancouver:
Yin L. Adaptive Background Modeling with Temporal Feature Update for Dynamic Foreground Object Removal. [Internet] [Masters thesis]. Utah State University; 2016. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/5040.
Council of Science Editors:
Yin L. Adaptive Background Modeling with Temporal Feature Update for Dynamic Foreground Object Removal. [Masters Thesis]. Utah State University; 2016. Available from: https://digitalcommons.usu.edu/etd/5040
Utah State University
3.
Pound, Andrew E.
Exploiting Sparsity and Dictionary Learning to Efficiently Classify Materials in Hyperspectral Imagery.
Degree: MS, Electrical and Computer Engineering, 2014, Utah State University
URL: https://digitalcommons.usu.edu/etd/4020
► Hyperspectral imaging (HSI) produces spatial images with pixels that, instead of consisting of three colors, consist of hundreds of spectral measurements. Because there are…
(more)
▼ Hyperspectral imaging (HSI) produces spatial images with pixels that, instead of consisting of three colors, consist of hundreds of spectral measurements. Because there are so many measurements for each pixel, analysis of HSI is difficult. Frequently, standard techniques are used to help make analysis more tractable by representing the HSI data in a different manner. This research explores the utility of representing the HSI data in a learned dictionary basis for the express purpose of material identification and classification. Multiclass classification is performed on the transformed data using the RandomForests algorithm. Performance results are reported. In addition to classification, single material detection is considered also. Commonly used detection algorithm performance is demonstrated on both raw radiance pixels and HSI represented in dictionary-learned bases. Comparison results are shown which indicate that detection on dictionary-learned sparse representations perform as well as detection on radiance. In addition, a different method of performing detection, capitalizing on dictionary learning is established and performance comparisons are reported, showing gains over traditional detection methods.
Advisors/Committee Members: Jacob Gunther, ;.
Subjects/Keywords: Exploiting Sparsity; Dictionary Learning; Hyperspectral Imagery; Electrical and Computer Engineering
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APA (6th Edition):
Pound, A. E. (2014). Exploiting Sparsity and Dictionary Learning to Efficiently Classify Materials in Hyperspectral Imagery. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/4020
Chicago Manual of Style (16th Edition):
Pound, Andrew E. “Exploiting Sparsity and Dictionary Learning to Efficiently Classify Materials in Hyperspectral Imagery.” 2014. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/4020.
MLA Handbook (7th Edition):
Pound, Andrew E. “Exploiting Sparsity and Dictionary Learning to Efficiently Classify Materials in Hyperspectral Imagery.” 2014. Web. 04 Mar 2021.
Vancouver:
Pound AE. Exploiting Sparsity and Dictionary Learning to Efficiently Classify Materials in Hyperspectral Imagery. [Internet] [Masters thesis]. Utah State University; 2014. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/4020.
Council of Science Editors:
Pound AE. Exploiting Sparsity and Dictionary Learning to Efficiently Classify Materials in Hyperspectral Imagery. [Masters Thesis]. Utah State University; 2014. Available from: https://digitalcommons.usu.edu/etd/4020
Utah State University
4.
De la Cruz, Juan Alberto.
Field-Programmable Gate Array Implementation of a Scalable Integral Image Architecture Based on Systolic Arrays.
Degree: MS, Electrical and Computer Engineering, 2011, Utah State University
URL: https://digitalcommons.usu.edu/etd/854
► The integral image representation of an image is important for a large number of modern image processing algorithms. Integral image representations can reduce computation…
(more)
▼ The integral image representation of an image is important for a large number of modern image processing algorithms. Integral image representations can reduce computation and increase the operating speed of certain algorithms, improving real-time performance. Due to increasing demand for real-time image processing performance, an integral image architecture capable of accelerating the calculation based on the amount of available resources is presented. Use of the proposed accelerator allows for subsequent stages of a design to have data sooner and execute in parallel. It is shown here how, with some additional resources used in the Field Programmable Gate Array (FPGA), a speed increase is obtained by using a one-dimensional Systolic Array (SA) approach. Additionally, extra guidelines are given for further research in this area.
Advisors/Committee Members: Paul Israelsen, Jacob Gunther, Reyhan Baktur, ;.
Subjects/Keywords: Accelerator; FPGA; Image Processing; Integral Image; Systolic Arrays; Computer Engineering
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APA (6th Edition):
De la Cruz, J. A. (2011). Field-Programmable Gate Array Implementation of a Scalable Integral Image Architecture Based on Systolic Arrays. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/854
Chicago Manual of Style (16th Edition):
De la Cruz, Juan Alberto. “Field-Programmable Gate Array Implementation of a Scalable Integral Image Architecture Based on Systolic Arrays.” 2011. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/854.
MLA Handbook (7th Edition):
De la Cruz, Juan Alberto. “Field-Programmable Gate Array Implementation of a Scalable Integral Image Architecture Based on Systolic Arrays.” 2011. Web. 04 Mar 2021.
Vancouver:
De la Cruz JA. Field-Programmable Gate Array Implementation of a Scalable Integral Image Architecture Based on Systolic Arrays. [Internet] [Masters thesis]. Utah State University; 2011. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/854.
Council of Science Editors:
De la Cruz JA. Field-Programmable Gate Array Implementation of a Scalable Integral Image Architecture Based on Systolic Arrays. [Masters Thesis]. Utah State University; 2011. Available from: https://digitalcommons.usu.edu/etd/854
Utah State University
5.
Khoshniat, Ali.
A Linearly and Circularly Polarized Active Integrated Antenna.
Degree: MS, Electrical and Computer Engineering, 2011, Utah State University
URL: https://digitalcommons.usu.edu/etd/881
► This thesis work presents a new harmonic suppression technique for microstrip patch antennas. Harmonic suppression in active integrated antennas is known as an effective…
(more)
▼ This thesis work presents a new harmonic suppression technique for microstrip patch antennas. Harmonic suppression in active integrated antennas is known as an effective method to improve the efficiency of amplifiers in transmitter side. In the proposed design, the antenna works as the radiating element and, at the same time, as the tuning load for the amplifier circuit that is directly matched to the antenna. The proposed active antenna architecture is easy to fabricate and is symmetric, so it can be conveniently mass-produced and designed to have circular polarization, which is preferred in many applications such as satellite communications.
The antenna simulations were performed using Ansoft High Frequency System Simulator (HFSS) and all amplifier design steps were simulated by Advanced Design System (ADS). The final prototypes of the linearly polarized active integrated antenna and the circularly polarized active integrated antenna were fabricated using a circuit board milling machine. The antenna radiation pattern was measured inside
Utah State University's anechoic chamber and the results were satisfactory. Power measurements for the amplifiers' performance were carried out inside the chamber and calculated by using the Friis transmission equation. It is seen that a significant improvement in the efficiency is achieved compared to the reference antenna without harmonic suppression.
Based on the success in the single element active antenna design, the thesis also presents a feasibility of applying the active integrated antenna in array configuration, in particular, in scanning array design to yield a low-profile, low-cost alternative to the parabolic antenna transmitter of satellite communication systems.
Advisors/Committee Members: Reyhan Baktur, Doran Baker, Jacob Gunther, ;.
Subjects/Keywords: Active Integration; Harmonic Suppression; Microstrip Circuits; Patch Antenna; Engineering
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APA (6th Edition):
Khoshniat, A. (2011). A Linearly and Circularly Polarized Active Integrated Antenna. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/881
Chicago Manual of Style (16th Edition):
Khoshniat, Ali. “A Linearly and Circularly Polarized Active Integrated Antenna.” 2011. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/881.
MLA Handbook (7th Edition):
Khoshniat, Ali. “A Linearly and Circularly Polarized Active Integrated Antenna.” 2011. Web. 04 Mar 2021.
Vancouver:
Khoshniat A. A Linearly and Circularly Polarized Active Integrated Antenna. [Internet] [Masters thesis]. Utah State University; 2011. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/881.
Council of Science Editors:
Khoshniat A. A Linearly and Circularly Polarized Active Integrated Antenna. [Masters Thesis]. Utah State University; 2011. Available from: https://digitalcommons.usu.edu/etd/881
Utah State University
6.
Goldin, Jeremy C.
Perching Using a Quadrotor with Onboard Sensing.
Degree: MS, Electrical and Computer Engineering, 2011, Utah State University
URL: https://digitalcommons.usu.edu/etd/927
► This thesis presents an implementation of autonomous indoor perching using only onboard sensors on a low-cost, custom-built quadrotor. The perching aggressive maneuver is representative…
(more)
▼ This thesis presents an implementation of autonomous indoor perching using only onboard sensors on a low-cost, custom-built quadrotor. The perching aggressive maneuver is representative of a class of control problems for aerobatics that requires an agile and robust control system for maneuvering accurately at high speeds. Such research extends the typical functionality of micro air vehicles (MAV) from low speed and stationary observation to dynamic aerobatic transitions for broader operational capabilities including confined landings and evasive maneuvering. To achieve this, three major challenges are overcome: precise and real-time positioning, sensing of the perch and path to the perch, and control methods for robust and accurate tracking at high speeds. Navigation in unstructured, global positioning system (GPS)-denied environments is achieved using a visual Simultaneous Localization and Mapping (SLAM) algorithm that relies on an onboard monocular camera. A secondary camera, capable of detecting infrared light sources, is used to locate the pathway for the maneuver and the perch, simulating sensing of the actual perch, for perching without prior knowledge of the location of the perch. The full physical system architecture is covered in detail, indicating the components and integration necessary to obtain effective aggressive control of an inexpensive quadrotor. The difficulties of attitude stabilization on noisy and lower-quality sensors are successfully addressed so that the air vehicle can be treated as a simple second-order system for the purposes of navigation and response to dynamic maneuvering commands. The system utilizes nested controllers for attitude stabilization, vision-based navigation, and perching guidance, with the navigation controller implemented using novel nonlinear saturation control within a Proportional-Integral-Derivative (PID) structure. The quadrotor is therefore able to autonomously sense the perch, reach initial high speeds for obtaining rapid deceleration from aerodynamic effects, dynamically transition to a high angle of attack post-stall configuration, and make a low-speed accurate landing on an inclined surface, using only onboard sensors.
Advisors/Committee Members: Wei Ren, David Geller, Jacob Gunther, ;.
Subjects/Keywords: Autonomous; Perch; Quadcopter; Quadrotor; SLAM; Electrical and Computer Engineering
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APA (6th Edition):
Goldin, J. C. (2011). Perching Using a Quadrotor with Onboard Sensing. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/927
Chicago Manual of Style (16th Edition):
Goldin, Jeremy C. “Perching Using a Quadrotor with Onboard Sensing.” 2011. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/927.
MLA Handbook (7th Edition):
Goldin, Jeremy C. “Perching Using a Quadrotor with Onboard Sensing.” 2011. Web. 04 Mar 2021.
Vancouver:
Goldin JC. Perching Using a Quadrotor with Onboard Sensing. [Internet] [Masters thesis]. Utah State University; 2011. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/927.
Council of Science Editors:
Goldin JC. Perching Using a Quadrotor with Onboard Sensing. [Masters Thesis]. Utah State University; 2011. Available from: https://digitalcommons.usu.edu/etd/927
Utah State University
7.
Burt, Robert.
Distributed Electrical Power System in Cubesat Applications.
Degree: MS, Electrical and Computer Engineering, 2011, Utah State University
URL: https://digitalcommons.usu.edu/etd/1052
► The single bus voltage distributed architecture is the mainstay architecture for small satellite spacecraft. Even large satellites follow this architecture. While they may have…
(more)
▼ The single bus voltage distributed architecture is the mainstay architecture for small satellite spacecraft. Even large satellites follow this architecture. While they may have more than one voltage that is distributed, such as a high voltage bus and a low voltage bus, within a subsystem, there is usually one bus voltage. Each subsystem component is responsible for further regulation or point-of-load regulation. The Nano-satellite class, and more particularly the cubesat, have broken away from this norm and overwhelmingly implement a centralized architecture. With the advances of small, highly efficient monolithic dc-dc converters, this thesis researches the possibilities of implementing the distributed architecture at the cubesat scale. The Goal is to create a very efficient electrical power system design that has a high degree of utility, allowing it to be used for multiple missions, without having to redesign the system every time.
Advisors/Committee Members: Charles M. Swenson, Edmund A. Spencer, Jacob Gunther, ;.
Subjects/Keywords: Architecture; Converter; Cubesat; Distributed; EPS; Power; Electrical and Computer Engineering
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APA (6th Edition):
Burt, R. (2011). Distributed Electrical Power System in Cubesat Applications. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1052
Chicago Manual of Style (16th Edition):
Burt, Robert. “Distributed Electrical Power System in Cubesat Applications.” 2011. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1052.
MLA Handbook (7th Edition):
Burt, Robert. “Distributed Electrical Power System in Cubesat Applications.” 2011. Web. 04 Mar 2021.
Vancouver:
Burt R. Distributed Electrical Power System in Cubesat Applications. [Internet] [Masters thesis]. Utah State University; 2011. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1052.
Council of Science Editors:
Burt R. Distributed Electrical Power System in Cubesat Applications. [Masters Thesis]. Utah State University; 2011. Available from: https://digitalcommons.usu.edu/etd/1052
Utah State University
8.
Gorthi, Swathi.
Prediction Models for Estimation of Soil Moisture Content.
Degree: MS, Electrical and Computer Engineering, 2011, Utah State University
URL: https://digitalcommons.usu.edu/etd/1090
► This thesis introduces the implementation of different supervised learning techniques for producing accurate estimates of soil moisture content using empirical information, including meteorological and…
(more)
▼ This thesis introduces the implementation of different supervised learning techniques for producing accurate estimates of soil moisture content using empirical information, including meteorological and remotely sensed data. The models thus developed can be extended to be used by the personal remote sensing systems developed in the Center for Self-Organizing Intelligent Systems (CSOIS). The dfferent models employed extend over a wide range of machine-learning techniques starting from basic linear regression models through models based on Bayesian framework. Also, ensembling methods such as bagging and boosting are implemented on all models for considerable improvements in accuracy. The main research objective is to understand, compare, and analyze the mathematical backgrounds underlying and results obtained from dfferent models and the respective improvisation techniques employed.
Advisors/Committee Members: Huifang Dou, YangQuan Chen, Jacob Gunther, ;.
Subjects/Keywords: Prediction models; soil moisture content; Electrical and Computer Engineering
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APA (6th Edition):
Gorthi, S. (2011). Prediction Models for Estimation of Soil Moisture Content. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1090
Chicago Manual of Style (16th Edition):
Gorthi, Swathi. “Prediction Models for Estimation of Soil Moisture Content.” 2011. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1090.
MLA Handbook (7th Edition):
Gorthi, Swathi. “Prediction Models for Estimation of Soil Moisture Content.” 2011. Web. 04 Mar 2021.
Vancouver:
Gorthi S. Prediction Models for Estimation of Soil Moisture Content. [Internet] [Masters thesis]. Utah State University; 2011. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1090.
Council of Science Editors:
Gorthi S. Prediction Models for Estimation of Soil Moisture Content. [Masters Thesis]. Utah State University; 2011. Available from: https://digitalcommons.usu.edu/etd/1090
Utah State University
9.
Arellano, Jesus A.
Inkjet-Printed Highly Transparent Solar Cell Antennas.
Degree: MS, Electrical and Computer Engineering, 2011, Utah State University
URL: https://digitalcommons.usu.edu/etd/1083
► Small satellites, especially Cube Satellites (CubeSats), have become important vehicles for space exploration. One of the challenges CubeSats face is limited surface area. This…
(more)
▼ Small satellites, especially Cube Satellites (CubeSats), have become important vehicles for space exploration. One of the challenges CubeSats face is limited surface area. This limitation poses a question for antenna design–where to mount the antenna? This thesis presents a study where the antennas are directly integrated on top of solar cells. In order to achieve such integration, the antennas have to be highly transparent to light. This thesis aims at the transparency of 95%. Methods to effectively generate transparent antenna by using inkjet printing are discussed in detail and interaction between solar cells and antennas have been assessed and presented. It is found that the presence of solar cells cast a degree of gain reduction of the antenna, but such a loss may be improved with a more precise integration and by increasing the operational frequency. The effect of the antenna on solar cell performance is concluded to be less than 3%, promising a feasibility of implementing highly transparent antennas on CubeSats.
Advisors/Committee Members: Reyhan Baktur, Edmund Spencer, Jacob Gunther, ;.
Subjects/Keywords: Ink-jet printed highly transparent solar cell antennas; Electrical and Computer Engineering
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APA (6th Edition):
Arellano, J. A. (2011). Inkjet-Printed Highly Transparent Solar Cell Antennas. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1083
Chicago Manual of Style (16th Edition):
Arellano, Jesus A. “Inkjet-Printed Highly Transparent Solar Cell Antennas.” 2011. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1083.
MLA Handbook (7th Edition):
Arellano, Jesus A. “Inkjet-Printed Highly Transparent Solar Cell Antennas.” 2011. Web. 04 Mar 2021.
Vancouver:
Arellano JA. Inkjet-Printed Highly Transparent Solar Cell Antennas. [Internet] [Masters thesis]. Utah State University; 2011. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1083.
Council of Science Editors:
Arellano JA. Inkjet-Printed Highly Transparent Solar Cell Antennas. [Masters Thesis]. Utah State University; 2011. Available from: https://digitalcommons.usu.edu/etd/1083
Utah State University
10.
Chandak, Mangalam.
Design and Characterization of Circularly Polarized Cavity-Backed Slot Antennas in an In-House-Constructed Anechoic Chamber.
Degree: MS, Electrical and Computer Engineering, 2012, Utah State University
URL: https://digitalcommons.usu.edu/etd/1265
► Small satellites are satellites that weight less than 500 kg. Compared to larger satellites, a small satellite, especially a cube satellite, has limited surface…
(more)
▼ Small satellites are satellites that weight less than 500 kg. Compared to larger satellites, a small satellite, especially a cube satellite, has limited surface area. The limited surface area casts challenges for allocating essential parts, such as antennas, for the satellite. Therefore, antennas that are conformal to the satellite surface have distinct advantages over other types of antennas that need significant mounting area. One of the very effective conformal antennas is cavity-backed slot antennas that can be integrated around solar cells and do not compete for extra surface area. The previous study performed on cavity-backed slot antennas was mainly a feasibility study and did not address realistic concerns such as effective feeding methods for the antennas. This thesis work is aimed at providing more detailed study on achieving high quality circular polarization (CP) and simplified feed design to initiate effective integration of the antenna with solar panel. In order to accurately characterize an antenna, an effective antenna range in an anechoic chamber is important.
Utah State University had an effective near-field range; however, there was not an fully shielded anechoic chamber. As another objective of this thesis work, a
state-of-the-art anechoic chamber has been constructed, calibrated, and utilized to measure different antenna parameters. This thesis also shows correct methods to measure important antenna properties such as CP and antenna efficiency.
Advisors/Committee Members: Reyhan Baktur, Edmund Spencer, Jacob Gunther, ;.
Subjects/Keywords: cube satellite; surface area; anechoic chamber; antenna efficiency; Electrical and Computer Engineering; Engineering
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APA (6th Edition):
Chandak, M. (2012). Design and Characterization of Circularly Polarized Cavity-Backed Slot Antennas in an In-House-Constructed Anechoic Chamber. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1265
Chicago Manual of Style (16th Edition):
Chandak, Mangalam. “Design and Characterization of Circularly Polarized Cavity-Backed Slot Antennas in an In-House-Constructed Anechoic Chamber.” 2012. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1265.
MLA Handbook (7th Edition):
Chandak, Mangalam. “Design and Characterization of Circularly Polarized Cavity-Backed Slot Antennas in an In-House-Constructed Anechoic Chamber.” 2012. Web. 04 Mar 2021.
Vancouver:
Chandak M. Design and Characterization of Circularly Polarized Cavity-Backed Slot Antennas in an In-House-Constructed Anechoic Chamber. [Internet] [Masters thesis]. Utah State University; 2012. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1265.
Council of Science Editors:
Chandak M. Design and Characterization of Circularly Polarized Cavity-Backed Slot Antennas in an In-House-Constructed Anechoic Chamber. [Masters Thesis]. Utah State University; 2012. Available from: https://digitalcommons.usu.edu/etd/1265
Utah State University
11.
Jamali, Maryam.
A Study on Conformal Antenna Solutions for Cube Satellites.
Degree: MS, Electrical and Computer Engineering, 2012, Utah State University
URL: https://digitalcommons.usu.edu/etd/1328
► This master's thesis presents a study on a slot and microstrip patch as the two main types of antennas for the use on Cube…
(more)
▼ This master's thesis presents a study on a slot and microstrip patch as the two main types of antennas for the use on Cube Satellite (CubeSat). A study on the fundamentals of the slot antenna is researched and a circularly polarized (CPd) cavity-backed cross slot antenna and its two-element array for the CubeSat are designed and fabricated. Fabricated two-element phased array cross slot antenna has higher radiation gain and steered radiation pattern compared to the fabricated single cross slot antenna. A CPd square microstrip patch antenna for the application of the CubeSat is designed and compared with a commercial CPd microstrip patch antenna. It is concluded that our designed microstrip patch antenna has a better performance compared to the commercial one. The last part of the research focuses on the design of miniaturized slot antennas for the CubeSat working at an ultra high frequency (UHF) band. The different techniques and challenges that we face through the miniaturization are articulated throughout the research and expanded upon in this thesis.
The antenna simulations were performed using Ansoft High Frequency System Simula- tor (HFSS) and the final designs for the CPd cavity-backed single and two-element cross slot antennas and CPd microstrip patch antenna were fabricated using a circuit board milling machine. These were then measured inside an anechoic chamber for the radiation pattern. Both antennas had high radiation gain and good CPd radiation quality.
Advisors/Committee Members: Reyhan Baktur, Doran Baker, Jacob Gunther, ;.
Subjects/Keywords: conformal; antenna; cube satellites; Electrical and Computer Engineering
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APA (6th Edition):
Jamali, M. (2012). A Study on Conformal Antenna Solutions for Cube Satellites. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1328
Chicago Manual of Style (16th Edition):
Jamali, Maryam. “A Study on Conformal Antenna Solutions for Cube Satellites.” 2012. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1328.
MLA Handbook (7th Edition):
Jamali, Maryam. “A Study on Conformal Antenna Solutions for Cube Satellites.” 2012. Web. 04 Mar 2021.
Vancouver:
Jamali M. A Study on Conformal Antenna Solutions for Cube Satellites. [Internet] [Masters thesis]. Utah State University; 2012. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1328.
Council of Science Editors:
Jamali M. A Study on Conformal Antenna Solutions for Cube Satellites. [Masters Thesis]. Utah State University; 2012. Available from: https://digitalcommons.usu.edu/etd/1328
Utah State University
12.
Yuan, Xiaoyan.
Multi-Functional Reconfigurable Antenna Development by Multi-Objective Optimization.
Degree: PhD, Electrical and Computer Engineering, 2012, Utah State University
URL: https://digitalcommons.usu.edu/etd/1326
► This dissertation work builds upon the theoretical and experimental studies of radio frequency micro- and nano-electromechanical systems (RF M/NEMS) integrated multifunctional reconfigurable antennas (MRAs).…
(more)
▼ This dissertation work builds upon the theoretical and experimental studies of radio frequency micro- and nano-electromechanical systems (RF M/NEMS) integrated multifunctional reconfigurable antennas (MRAs). This work focuses on three MRAs with an emphasis on a wireless local area network (WLAN), 5-6 GHz, beam tilt, and polarization reconfigurable parasitic layer-based MRA with inset micro-strip feed. The other two antennas are an X band (8-12 GHz) beam steering MRA with aperture-coupled micro-strip fed and wireless personal area network (WPAN), 60 GHz, inset micro-strip fed MRA for dual frequency and dual polarization operations. For the WLAN (5-6 GHz) MRA, a detailed description of the design methodology, which is based on the joint utilization of electromagnetic (EM) full-wave analysis and multi-objective genetic algorithm, and fundamental theoretical background of parasitic layer-based antennas are given. Various prototypes of this MRA have been fabricated and measured. The measured and simulated results for both impedance and radiation characteristics are given. The work on the MRAs operating in the X band and 60 GHz region focuses on the theoretical aspects of the designs. Different than the WLAN MRA, which uses inset fed structure, the aperture-coupled feed mechanism has been investigated with the goal of improving the bandwidth and beam-tilt capabilities of these MRAs. The simulated results are provided and the working mechanisms are described. The results show that the aperture-coupled feed mechanism is advantageous both in terms of enhanced bandwidth and beam-steering capabilities. Finally, this dissertation work concludes with plans for future work, which will build upon the findings and the results presented herein.
Advisors/Committee Members: Bedri A. Cetiner, Doran J. Baker, Jacob Gunther, ;.
Subjects/Keywords: reconfigurable; antenna; multi-objective; optimization; Electrical and Computer Engineering
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APA (6th Edition):
Yuan, X. (2012). Multi-Functional Reconfigurable Antenna Development by Multi-Objective Optimization. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1326
Chicago Manual of Style (16th Edition):
Yuan, Xiaoyan. “Multi-Functional Reconfigurable Antenna Development by Multi-Objective Optimization.” 2012. Doctoral Dissertation, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1326.
MLA Handbook (7th Edition):
Yuan, Xiaoyan. “Multi-Functional Reconfigurable Antenna Development by Multi-Objective Optimization.” 2012. Web. 04 Mar 2021.
Vancouver:
Yuan X. Multi-Functional Reconfigurable Antenna Development by Multi-Objective Optimization. [Internet] [Doctoral dissertation]. Utah State University; 2012. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1326.
Council of Science Editors:
Yuan X. Multi-Functional Reconfigurable Antenna Development by Multi-Objective Optimization. [Doctoral Dissertation]. Utah State University; 2012. Available from: https://digitalcommons.usu.edu/etd/1326
Utah State University
13.
Challakere, Nagaravind.
Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing.
Degree: MS, Electrical and Computer Engineering, 2012, Utah State University
URL: https://digitalcommons.usu.edu/etd/1423
► This thesis presents a novel method to solve the problem of estimating the carrier frequency set in an Orthogonal Frequency Division Multiplexing (OFDM) system.…
(more)
▼ This thesis presents a novel method to solve the problem of estimating the carrier frequency set in an Orthogonal Frequency Division Multiplexing (OFDM) system. The approach is based on the minimization of the probability of symbol error. Hence, this approach is called the Minimum Symbol Error Rate (MSER) approach. An existing approach based on Maximum Likelihood (ML) is chosen to benchmark the performance of the MSER-based algorithm. The MSER approach is computationally intensive. The thesis evaluates the approximations that can be made to the MSER-based objective function to make the computation tractable. A modified gradient function based on the MSER objective is developed which provides better performance characteristics than the ML-based estimator. The estimates produced by the MSER approach exhibit lower Mean Squared Error compared to the ML benchmark. The performance of MSER-based estimator is simulated with Quaternary Phase Shift Keying (QPSK) symbols, but the algorithm presented is applicable to all complex symbol constellations.
Advisors/Committee Members: Jacob Gunther, Todd K. Moon, Edmund Spencer, ;.
Subjects/Keywords: Adaptive algorithm; Carrier Frequency Offset (CFO) Estimation; Data-aided; Minimum Mean Squared Error; MSER; OFDM; Electrical and Computer Engineering
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APA (6th Edition):
Challakere, N. (2012). Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1423
Chicago Manual of Style (16th Edition):
Challakere, Nagaravind. “Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing.” 2012. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1423.
MLA Handbook (7th Edition):
Challakere, Nagaravind. “Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing.” 2012. Web. 04 Mar 2021.
Vancouver:
Challakere N. Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing. [Internet] [Masters thesis]. Utah State University; 2012. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1423.
Council of Science Editors:
Challakere N. Carrier Frequency Offset Estimation for Orthogonal Frequency Division Multiplexing. [Masters Thesis]. Utah State University; 2012. Available from: https://digitalcommons.usu.edu/etd/1423
Utah State University
14.
Neal, David A.
Utilizing Correct Prior Probability Calculation to Improve Performance of Low-Density Parity-Check Codes in the Presence of Burst Noise.
Degree: MS, Electrical and Computer Engineering, 2012, Utah State University
URL: https://digitalcommons.usu.edu/etd/1402
► Low-density parity-check (LDPC) codes provide excellent error correction performance and can approach the channel capacity, but their performance degrades significantly in the presence of…
(more)
▼ Low-density parity-check (LDPC) codes provide excellent error correction performance and can approach the channel capacity, but their performance degrades significantly in the presence of burst noise. Bursts of errors occur in many common channels, including the magnetic recording and the wireless communications channels. Strategies such as interleaving have been developed to help compensate for bursts errors. These techniques do not exploit the correlations that can exist between the noise variance on observations in and out of the bursts. These differences can be exploited in calculations of prior probabilities to improve accuracy of soft information that is sent to the LDPC decoder.
Effects of using different noise variances in the calculation of prior probabilities are investigated. Using the true variance of each observation improves performance. A novel burst detector utilizing the forward/backward algorithm is developed to determine the
state of each observation, allowing the correct variance to be selected for each. Comparisons between this approach and existing techniques demonstrate improved performance. The approach is generalized and potential future research is discussed.
Advisors/Committee Members: Todd K. Moon, Jacob Gunther, Donald Cripps, ;.
Subjects/Keywords: Burst Noise; Error Correcting Code; Low-Density Parity-Check Code; State Detection; Electrical and Computer Engineering; Engineering
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APA (6th Edition):
Neal, D. A. (2012). Utilizing Correct Prior Probability Calculation to Improve Performance of Low-Density Parity-Check Codes in the Presence of Burst Noise. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1402
Chicago Manual of Style (16th Edition):
Neal, David A. “Utilizing Correct Prior Probability Calculation to Improve Performance of Low-Density Parity-Check Codes in the Presence of Burst Noise.” 2012. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1402.
MLA Handbook (7th Edition):
Neal, David A. “Utilizing Correct Prior Probability Calculation to Improve Performance of Low-Density Parity-Check Codes in the Presence of Burst Noise.” 2012. Web. 04 Mar 2021.
Vancouver:
Neal DA. Utilizing Correct Prior Probability Calculation to Improve Performance of Low-Density Parity-Check Codes in the Presence of Burst Noise. [Internet] [Masters thesis]. Utah State University; 2012. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1402.
Council of Science Editors:
Neal DA. Utilizing Correct Prior Probability Calculation to Improve Performance of Low-Density Parity-Check Codes in the Presence of Burst Noise. [Masters Thesis]. Utah State University; 2012. Available from: https://digitalcommons.usu.edu/etd/1402
Utah State University
15.
Smith, Cody S.
Compressive Point Cloud Super Resolution.
Degree: MS, Electrical and Computer Engineering, 2012, Utah State University
URL: https://digitalcommons.usu.edu/etd/1392
► Automatic target recognition (ATR) is the ability for a computer to discriminate between different objects in a scene. ATR is often performed on point…
(more)
▼ Automatic target recognition (ATR) is the ability for a computer to discriminate between different objects in a scene. ATR is often performed on point cloud data from a sensor known as a Ladar. Increasing the resolution of this point cloud in order to get a more clear view of the object in a scene would be of significant interest in an ATR application.
A technique to increase the resolution of a scene is known as super resolution. This technique requires many low resolution images that can be combined together. In recent years, however, it has become possible to perform super resolution on a single image. This thesis sought to apply Gabor Wavelets and Compressive Sensing to single image super resolution of digital images of natural scenes. The technique applied to images was then extended to allow the super resolution of a point cloud.
Advisors/Committee Members: Scott Budge, Don Cripps, Jacob Gunther, ;.
Subjects/Keywords: Compressive Imaging; Compressive Sampling; Ladar; Super Resolution; Electrical and Computer Engineering
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APA (6th Edition):
Smith, C. S. (2012). Compressive Point Cloud Super Resolution. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1392
Chicago Manual of Style (16th Edition):
Smith, Cody S. “Compressive Point Cloud Super Resolution.” 2012. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1392.
MLA Handbook (7th Edition):
Smith, Cody S. “Compressive Point Cloud Super Resolution.” 2012. Web. 04 Mar 2021.
Vancouver:
Smith CS. Compressive Point Cloud Super Resolution. [Internet] [Masters thesis]. Utah State University; 2012. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1392.
Council of Science Editors:
Smith CS. Compressive Point Cloud Super Resolution. [Masters Thesis]. Utah State University; 2012. Available from: https://digitalcommons.usu.edu/etd/1392
Utah State University
16.
Mukherjee, Sarbajit.
Acquisition, Processing, and Analysis of Video, Audio and Meteorological Data in Multi-Sensor Electronic Beehive Monitoring.
Degree: PhD, Computer Science, 2020, Utah State University
URL: https://digitalcommons.usu.edu/etd/7993
► In recent years, a widespread decline has been seen in honey bee population and this is widely attributed to colony collapse disorder. Hence, it…
(more)
▼ In recent years, a widespread decline has been seen in honey bee population and this is widely attributed to colony collapse disorder. Hence, it is of utmost importance that a system is designed to gather relevant information. This will allow for a deeper understanding of the possible reasons behind the above phenomenon to aid in the design of suitable countermeasures.
Electronic Beehive Monitoring is one such way of gathering critical information regarding a colony’s health and behavior without invasive beehive inspections. In this dissertation, we have presented an electronic beehive monitoring system called BeePi that can be placed on top of a super and requires no structural modifications to a standard beehive (Langstroth or Dadant beehive), thereby preserving the sacredness of the bee space without disturbing the natural beehive cycles. The system is capable of capturing videos of forager traffic through a camera placed over the landing pad. Audio of bee buzzing is also recorded through microphones attached outside just above the landing pad. The above sensors are connected to a low-cost raspberry pi computer, and the data is saved on the raspberry pi itself or an external hard drive.
In this dissertation, we have developed an algorithm that analyzes those video recordings and returns the number of bees that have moved in each video. The algorithm is also able to distinguish between incoming, outgoing, and lateral bee movements. We believe this would help commercial and amateur beekeepers or even citizen scientists to observe the bee traffic near their respective hives to identify the
state of the corresponding bee colonies. This information helps those mentioned above because it is believed that honeybee traffic carries information on colony behavior and phenology.
Next, we analyzed the audio recordings and presented a system that can classify those recordings into bee buzzing, cricket chirping, and ambient noise. We later saw how a long–term analysis of the intensity of bee buzzing could help us understand the hive’s development through an entire beekeeping season.
We also investigated the effect of local weather conditions using 21 different meteorological variables on the forager traffic. We collected the meteorological data from a weather station located on the campus of
Utah State University. Through our study, we were able to show that without the use of additional costly intrusive hardware to count the bees, we can use our bee motion counting algorithm to calculate the bee motions and then use the counts to investigate the relationship between foraging activity and local weather.
To ensure that our findings and algorithms can be reproduced, we have made our datasets and source codes public for interested research and citizen science communities.
Advisors/Committee Members: Vladimir A. Kulyukin, Xiaojun Qi, Jacob Gunther, ;.
Subjects/Keywords: electronic beehive monitoring; video processing; image processing; insect traffic; honeybee traffic; digital particle image velocimetry; deep learning; machine learning; convolutional neural networks; audio classification; audio processing; bioacoustics; ecoacoustics; bees; foraging; weather; monitoring; predictive analysis; Computer Sciences; Theory and Algorithms
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APA (6th Edition):
Mukherjee, S. (2020). Acquisition, Processing, and Analysis of Video, Audio and Meteorological Data in Multi-Sensor Electronic Beehive Monitoring. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7993
Chicago Manual of Style (16th Edition):
Mukherjee, Sarbajit. “Acquisition, Processing, and Analysis of Video, Audio and Meteorological Data in Multi-Sensor Electronic Beehive Monitoring.” 2020. Doctoral Dissertation, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7993.
MLA Handbook (7th Edition):
Mukherjee, Sarbajit. “Acquisition, Processing, and Analysis of Video, Audio and Meteorological Data in Multi-Sensor Electronic Beehive Monitoring.” 2020. Web. 04 Mar 2021.
Vancouver:
Mukherjee S. Acquisition, Processing, and Analysis of Video, Audio and Meteorological Data in Multi-Sensor Electronic Beehive Monitoring. [Internet] [Doctoral dissertation]. Utah State University; 2020. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7993.
Council of Science Editors:
Mukherjee S. Acquisition, Processing, and Analysis of Video, Audio and Meteorological Data in Multi-Sensor Electronic Beehive Monitoring. [Doctoral Dissertation]. Utah State University; 2020. Available from: https://digitalcommons.usu.edu/etd/7993
Utah State University
17.
Maimaiti, Maimaitirebike.
Study of Inkjet Printing as an Ultra-Low-Cost Antenna Prototyping Method and Its Application to Conformal Wraparound Antennas for Sounding Rocket Sub-Payload.
Degree: MS, Electrical and Computer Engineering, 2013, Utah State University
URL: https://digitalcommons.usu.edu/etd/1715
► Inkjet printing is an attractive patterning technology that has received tremendous interest as a mass fabrication method for a variety of electronic devices due…
(more)
▼ Inkjet printing is an attractive patterning technology that has received tremendous interest as a mass fabrication method for a variety of electronic devices due to its manufacturing exibility and low-cost feature. However, the printing facilities that are being used, especially the inkjet printer, are very expensive. This thesis introduces an extremely cost-friendly inkjet printing method using a printer that costs less than $100. In order to verify its reliability, linearly and circularly polarized (CPd) planar and conformal microstrip antennas were fabricated using this printing method, and their measurement results were compared with copper microstrip antennas. The result shows that the printed microstrip antennas have similar performances to those of the copper antennas except for lower efficiency. The effects of the conductivity and thickness of the ink layer on the antenna properties were studied, and it is found that the conductivity is the main factor affecting the radiation efficiency, though thicker ink yields more effective antennas. This thesis also presents the detailed antenna design for a sub-payload. The sub-payload is a cylindrical structure with a diameter of six inches and a height of four inches. It has four booms coming out from the surface, which are used to measure the variations of the energy flow into the upper atmosphere in and around the aurora. The sub-payload has two types of antennas: linearly polarized (LPd) S-band antennas and right-hand circularly polarized (RHCPd) GPS antennas. Each type of antenna has various requirements to be fully functional for specific research tasks. The thesis includes the design methods of each type of antenna, challenges that were confronted, and the possible solutions that were proposed. As a practical application, the inkjet printing method was conveniently applied in validating some of the antenna designs.
Advisors/Committee Members: Reyhan Baktur, Jacob Gunther, Edmund Spencer, ;.
Subjects/Keywords: Circularly Polarized Conformal Patch Antennas; Cylindrical Sub-Payload; Inkjet Printing; Multilayer Antennas; Computer Engineering; Engineering
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APA (6th Edition):
Maimaiti, M. (2013). Study of Inkjet Printing as an Ultra-Low-Cost Antenna Prototyping Method and Its Application to Conformal Wraparound Antennas for Sounding Rocket Sub-Payload. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1715
Chicago Manual of Style (16th Edition):
Maimaiti, Maimaitirebike. “Study of Inkjet Printing as an Ultra-Low-Cost Antenna Prototyping Method and Its Application to Conformal Wraparound Antennas for Sounding Rocket Sub-Payload.” 2013. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1715.
MLA Handbook (7th Edition):
Maimaiti, Maimaitirebike. “Study of Inkjet Printing as an Ultra-Low-Cost Antenna Prototyping Method and Its Application to Conformal Wraparound Antennas for Sounding Rocket Sub-Payload.” 2013. Web. 04 Mar 2021.
Vancouver:
Maimaiti M. Study of Inkjet Printing as an Ultra-Low-Cost Antenna Prototyping Method and Its Application to Conformal Wraparound Antennas for Sounding Rocket Sub-Payload. [Internet] [Masters thesis]. Utah State University; 2013. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1715.
Council of Science Editors:
Maimaiti M. Study of Inkjet Printing as an Ultra-Low-Cost Antenna Prototyping Method and Its Application to Conformal Wraparound Antennas for Sounding Rocket Sub-Payload. [Masters Thesis]. Utah State University; 2013. Available from: https://digitalcommons.usu.edu/etd/1715
Utah State University
18.
Damgaci, Yasin.
Digital Microfluidics As A Reconfiguration Mechanism For Antennas.
Degree: PhD, Electrical and Computer Engineering, 2013, Utah State University
URL: https://digitalcommons.usu.edu/etd/1761
► This dissertation work concentrates on novel reconfiguration technologies, including design, microfabrication, and characterization aspects with an emphasis on their applications to multifunctional reconfigurable antennas.…
(more)
▼ This dissertation work concentrates on novel reconfiguration technologies, including design, microfabrication, and characterization aspects with an emphasis on their applications to multifunctional reconfigurable antennas. In the literature, reconfigurable antennas have made use of various reconfiguration techniques. The most common techniques utilized revolved around switching mechanisms. Other techniques such as the incorporation of variable capacitors, varactors, and physical structure manipulation surfaced recently to overcome many problems faced in using switches and their biasing. Usage of fluids (micro-fluidic or otherwise) in antennas provides a conceptually easy reconfiguration mechanism in the aspect of physical alteration. However, a requirement of pumps, valves, etc. for liquid transportation makes the antenna implementations rather impractical for the real-life scenarios. This work reports on design and experiments conducted to evaluate the electrowetting on dielectric (EWOD) driven digital microfluidics as a reconfiguration mechanism for antennas.
Advisors/Committee Members: Bedri A. Cetiner, Jacob Gunther, Reyhan Baktur, ;.
Subjects/Keywords: reconfiguration technologies; microgabrictaion; antennas; electrowetting on dielectric; ewod; Electrical and Computer Engineering; Electrical and Electronics
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APA (6th Edition):
Damgaci, Y. (2013). Digital Microfluidics As A Reconfiguration Mechanism For Antennas. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/1761
Chicago Manual of Style (16th Edition):
Damgaci, Yasin. “Digital Microfluidics As A Reconfiguration Mechanism For Antennas.” 2013. Doctoral Dissertation, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/1761.
MLA Handbook (7th Edition):
Damgaci, Yasin. “Digital Microfluidics As A Reconfiguration Mechanism For Antennas.” 2013. Web. 04 Mar 2021.
Vancouver:
Damgaci Y. Digital Microfluidics As A Reconfiguration Mechanism For Antennas. [Internet] [Doctoral dissertation]. Utah State University; 2013. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/1761.
Council of Science Editors:
Damgaci Y. Digital Microfluidics As A Reconfiguration Mechanism For Antennas. [Doctoral Dissertation]. Utah State University; 2013. Available from: https://digitalcommons.usu.edu/etd/1761
Utah State University
19.
Badamikar, Neeraj S.
Automatic Registration of Multiple Texel Images to Form a 3-Dimensional Texel Image.
Degree: MS, Electrical and Computer Engineering, 2014, Utah State University
URL: https://digitalcommons.usu.edu/etd/2064
► Three-dimensional (3D) imagery has gained a lot of importance in today's world, be it in the field of entertainment, documentation, or defense. Multiple methods…
(more)
▼ Three-dimensional (3D) imagery has gained a lot of importance in today's world, be it in the field of entertainment, documentation, or defense. Multiple methods for creating 3D images have been proposed in the past. A few famous methods used for 3D image matching are those that include usage of 2D images as stereo pairs or computing 3D rigid body transformations based on range information of points. The Iterative Closest Point algorithm (ICP) and its variants are well known for registration of point clouds, which can be used to create 3D surfaces. This thesis provides an algorithm, which is a continuation of the work done previously at
Utah State University, to create accurate 3D images based on "texel" images obtained from the handheld texel camera built at USU. The first part of the thesis briefly reviews the structure and working of the handheld texel camera and the technique of creating texel images using the device and calibrating the images to mitigate the effect of lens distortions. A method is then suggested to reduce the errors in the range information in the image caused by walk error and wiggling error and also to compensate for the timing error induced in the individual pixels of the lidar sensor. A way to add a correcting factor to the range information to compensate for any oset in the origin assumed by the sensor and the actual center of perspective (COP) of the sensor is suggested in the later part of the thesis, thus correcting the images for the inaccuracies caused by the oset. The second half of the thesis brie y goes over the work previously done on 3D image matching and registration to produce 3D images. A few changes are suggested in some parts of the existing method, which use concepts of epipolar geometry in the RANSAC algorithm and use planar interpolation to accurately obtain the 3D co-ordinates of points from 2D coordinates. An iterative solution is proposed to correct erroneously chosen correspondences or reject bad correspondences to improve the rigid body transformation. The transformation thus obtained is used to compute more point matches, which are in turn used to estimate a more accurate least squares solution for the rigid body transformation. Results show that the calibration techniques and the changes implemented in the point cloud matching algorithm, suggested in this thesis, improve the accuracy of the images and produce 3D images with correct matching.
Advisors/Committee Members: Scott E. Budge, Jacob Gunther, Don Cripps, ;.
Subjects/Keywords: texel images; Electrical and Computer Engineering
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APA (6th Edition):
Badamikar, N. S. (2014). Automatic Registration of Multiple Texel Images to Form a 3-Dimensional Texel Image. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/2064
Chicago Manual of Style (16th Edition):
Badamikar, Neeraj S. “Automatic Registration of Multiple Texel Images to Form a 3-Dimensional Texel Image.” 2014. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/2064.
MLA Handbook (7th Edition):
Badamikar, Neeraj S. “Automatic Registration of Multiple Texel Images to Form a 3-Dimensional Texel Image.” 2014. Web. 04 Mar 2021.
Vancouver:
Badamikar NS. Automatic Registration of Multiple Texel Images to Form a 3-Dimensional Texel Image. [Internet] [Masters thesis]. Utah State University; 2014. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/2064.
Council of Science Editors:
Badamikar NS. Automatic Registration of Multiple Texel Images to Form a 3-Dimensional Texel Image. [Masters Thesis]. Utah State University; 2014. Available from: https://digitalcommons.usu.edu/etd/2064
Utah State University
20.
Tithi, Tasnuva Tarannum.
Error-Floors of the 802.3an LDPC Code for Noise Assisted Decoding.
Degree: PhD, Electrical and Computer Engineering, 2019, Utah State University
URL: https://digitalcommons.usu.edu/etd/7465
► In digital communication, information is sent as bits, which is corrupted by the noise present in wired/wireless medium known as the channel. The Low…
(more)
▼ In digital communication, information is sent as bits, which is corrupted by the noise present in wired/wireless medium known as the channel. The Low Density Parity Check (LDPC) codes are a family of error correction codes used in communication systems to detect and correct erroneous data at the receiver. Data is encoded with error correction coding at the transmitter and decoded at the receiver. The Noisy Gradient Descent BitFlip (NGDBF) decoding algorithm is a new algorithm with excellent decoding performance with relatively low implementation requirements. This dissertation aims to characterize the performance of the NGDBF algorithm. A simple improvement over NGDBF called the Re-decoded NGDBF (R-NGDBF) is proposed to enhance the performance of NGDBF decoding algorithm. A general method to estimate the decoding parameters of NGDBF is presented. The estimated parameters are then verified in a hardware implementation of the decoder to validate the accuracy of the estimation technique.
Advisors/Committee Members: Chris Winstead, Jacob Gunther, Reyhan Baktur, ;.
Subjects/Keywords: LDPC code; Error Correction Code; Stochastic Decoding; LDPC Error Floors; Electrical and Computer Engineering
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APA (6th Edition):
Tithi, T. T. (2019). Error-Floors of the 802.3an LDPC Code for Noise Assisted Decoding. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7465
Chicago Manual of Style (16th Edition):
Tithi, Tasnuva Tarannum. “Error-Floors of the 802.3an LDPC Code for Noise Assisted Decoding.” 2019. Doctoral Dissertation, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7465.
MLA Handbook (7th Edition):
Tithi, Tasnuva Tarannum. “Error-Floors of the 802.3an LDPC Code for Noise Assisted Decoding.” 2019. Web. 04 Mar 2021.
Vancouver:
Tithi TT. Error-Floors of the 802.3an LDPC Code for Noise Assisted Decoding. [Internet] [Doctoral dissertation]. Utah State University; 2019. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7465.
Council of Science Editors:
Tithi TT. Error-Floors of the 802.3an LDPC Code for Noise Assisted Decoding. [Doctoral Dissertation]. Utah State University; 2019. Available from: https://digitalcommons.usu.edu/etd/7465
Utah State University
21.
Zhang, Zekun.
Stochastic Geometry Based Performance Study in 5G Wireless Networks.
Degree: PhD, Electrical and Computer Engineering, 2019, Utah State University
URL: https://digitalcommons.usu.edu/etd/7471
► As the complexity of modern cellular networks continuously increases along with the evolution of technologies and the quick explosion of mobile data traffic, conventional…
(more)
▼ As the complexity of modern cellular networks continuously increases along with the evolution of technologies and the quick explosion of mobile data traffic, conventional large scale system level simulations and analytical tools become either too complicated or less tractable and accurate. Therefore, novel analytical models are actively pursued. In recent years, stochastic geometry models have been recognized as powerful tools to analyze the key performance metrics of cellular networks. In this dissertation, stochastic geometry based analytical models are developed to analyze the performance of some key technologies proposed for 5G mobile networks. Particularly, Device-to-Device (D2D) communication, Non-orthogonal multiple access (NOMA), and ultra-dense networks (UDNs) are investigated and analyzed by stochastic geometry models, more specifically, Poisson Point Process (PPP) models.
D2D communication enables direct communication between mobile users in proximity to each other bypassing base station (BS). Embedding D2D communication into existing cellular networks brings many benefits such as improving spectrum efficiency, decreasing power energy consumption, and enabling novel location-based services. However, these benefits may not be fully exploited if the co-channel interference among D2D users and cellular users is not properly tackled. In this dissertation, various frequency reuse and power control schemes are proposed, aiming at mitigating the interference between D2D users and conventional cellular users. The performance gain of proposed schemes is analyzed on a system modeled by a 2-tier PPP and validated by numerical simulations.
NOMA is a promising radio access technology for 5G cellular networks. Different with widely applied orthogonal multiple access (OMA) such as orthogonal frequency division multiple access (OFDMA) and single carrier frequency division multiple access (SC-FDMA), NOMA allows multiple users to use the same frequency/time resource and offers many advantages such as improving spectral efficiency, enhancing connectivity, providing higher cell-edge throughput, and reducing transmission latency. Although some initial performance analysis has been done on NOMA with single cell scenario, the system level performance of NOMA in a multi-cell scenario is not investigated in existing work. In this dissertation, analytical frameworks are developed to evaluate the performance of a wireless network with NOMA on both downlink and uplink. Distinguished from existing publications on NOMA, the framework developed in this dissertation is the first one that takes inter-cell interference into consideration.
UDN is another key technology for 5G wireless networks to achieve high capacity and coverage. Due to the existence of line-of-sight (LoS)/non-line-of-sight (NLoS) propagation and bounded path loss behavior in UDN networks, the tractability of the original PPP model diminishes when analyzing the performance of UDNs. Therefore, a dominant BS (base station)-based approximation model…
Advisors/Committee Members: Rose Qingyang Hu, Jacob Gunther, Bedri Cetiner, ;.
Subjects/Keywords: Stochastic geometry; 5G Networks; D2D; NOMA; UDN; Electrical and Computer Engineering
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APA (6th Edition):
Zhang, Z. (2019). Stochastic Geometry Based Performance Study in 5G Wireless Networks. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7471
Chicago Manual of Style (16th Edition):
Zhang, Zekun. “Stochastic Geometry Based Performance Study in 5G Wireless Networks.” 2019. Doctoral Dissertation, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7471.
MLA Handbook (7th Edition):
Zhang, Zekun. “Stochastic Geometry Based Performance Study in 5G Wireless Networks.” 2019. Web. 04 Mar 2021.
Vancouver:
Zhang Z. Stochastic Geometry Based Performance Study in 5G Wireless Networks. [Internet] [Doctoral dissertation]. Utah State University; 2019. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7471.
Council of Science Editors:
Zhang Z. Stochastic Geometry Based Performance Study in 5G Wireless Networks. [Doctoral Dissertation]. Utah State University; 2019. Available from: https://digitalcommons.usu.edu/etd/7471
Utah State University
22.
Zahin, Abrar.
Big Data Management for Secured Smart Healthcare System: A Machine Learning Framework.
Degree: MS, Electrical and Computer Engineering, 2020, Utah State University
URL: https://digitalcommons.usu.edu/etd/7741
► Human action recognition and monitoring are a significant part of a smart healthcare system, which allows us to remotely monitor the behavior of patients…
(more)
▼ Human action recognition and monitoring are a significant part of a smart healthcare system, which allows us to remotely monitor the behavior of patients or elderly persons to record their daily activities and to ensure safety. Ubiquitous smart wearable sensors are becoming convenient for generating and transmitting those healthcare data for further processing. Interpretation of such huge amount of data requires advanced learning systems where most important information can be extracted and analyzed. For example, current classification algorithms are not robust enough to differentiate among numerous variations of human actions due to the lack of sufficient processed samples. Thus, one aspect of this thesis focuses on how to incorporate raw data with the processed one in order to build abetter classification framework. Furthermore, for a remote surveillance system, excessive amount of data need to be transmitted to the receiver end, which is not only an energy-intensive process but also may jeopardize the real-time processing capability because of the overwhelming number of packets received and numerous packet losses. This challenge is addressed by the second part of the thesis, which designs an efficient framework to reduce the amount of insignificant information for transmission. The proposed scheme can not only reduce the number of packets but is also robust to packet loss.
Advisors/Committee Members: Rose Qingyang Hu, Jacob Gunther, Yan Sun, ;.
Subjects/Keywords: IoT; Variational Autoencoder; Convolutional Neural Network; Compressive Sensing; Denoising Autoencoder; Electrical and Computer Engineering
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APA (6th Edition):
Zahin, A. (2020). Big Data Management for Secured Smart Healthcare System: A Machine Learning Framework. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7741
Chicago Manual of Style (16th Edition):
Zahin, Abrar. “Big Data Management for Secured Smart Healthcare System: A Machine Learning Framework.” 2020. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7741.
MLA Handbook (7th Edition):
Zahin, Abrar. “Big Data Management for Secured Smart Healthcare System: A Machine Learning Framework.” 2020. Web. 04 Mar 2021.
Vancouver:
Zahin A. Big Data Management for Secured Smart Healthcare System: A Machine Learning Framework. [Internet] [Masters thesis]. Utah State University; 2020. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7741.
Council of Science Editors:
Zahin A. Big Data Management for Secured Smart Healthcare System: A Machine Learning Framework. [Masters Thesis]. Utah State University; 2020. Available from: https://digitalcommons.usu.edu/etd/7741
Utah State University
23.
Landeen, Trevor J.
Association Learning Via Deep Neural Networks.
Degree: PhD, Electrical and Computer Engineering, 2018, Utah State University
URL: https://digitalcommons.usu.edu/etd/7028
► Deep learning has been making headlines in recent years and is often portrayed as an emerging technology on a meteoric rise towards fully sentient…
(more)
▼ Deep learning has been making headlines in recent years and is often portrayed as an emerging technology on a meteoric rise towards fully sentient artificial intelligence. In reality, deep learning is the most recent renaissance of a 70 year old technology and is far from possessing true intelligence. The renewed interest is motivated by recent successes in challenging problems, the accessibility made possible by hardware developments, and dataset availability.
The predecessor to deep learning, commonly known as the artificial neural network, is a computational network setup to mimic the biological neural structure found in brains. However, unlike human brains, artificial neural networks, in most cases cannot make inferences from one problem to another. As a result, developing an artificial neural network requires a large number of examples of desired behavior for a specific problem. Furthermore, developing an artificial neural network capable of solving the problem can take days, or even weeks, of computations.
Two specific problems addressed in this dissertation are both input association problems. One problem challenges a neural network to identify overlapping regions in images and is used to evaluate the ability of a neural network to learn associations between inputs of similar types. The other problem asks a neural network to identify which observed wireless signals originated from observed potential sources and is used to assess the ability of a neural network to learn associations between inputs of different types.
The neural network solutions to both problems introduced, discussed, and evaluated in this dissertation demonstrate deep learning’s applicability to problems which have previously attracted little attention.
Advisors/Committee Members: Jacob Gunther, Todd Moon, Reyhan Baktur, ;.
Subjects/Keywords: Deep Learning; Neural Networks; Multiple Input; Electrical and Computer Engineering
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APA (6th Edition):
Landeen, T. J. (2018). Association Learning Via Deep Neural Networks. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7028
Chicago Manual of Style (16th Edition):
Landeen, Trevor J. “Association Learning Via Deep Neural Networks.” 2018. Doctoral Dissertation, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7028.
MLA Handbook (7th Edition):
Landeen, Trevor J. “Association Learning Via Deep Neural Networks.” 2018. Web. 04 Mar 2021.
Vancouver:
Landeen TJ. Association Learning Via Deep Neural Networks. [Internet] [Doctoral dissertation]. Utah State University; 2018. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7028.
Council of Science Editors:
Landeen TJ. Association Learning Via Deep Neural Networks. [Doctoral Dissertation]. Utah State University; 2018. Available from: https://digitalcommons.usu.edu/etd/7028
Utah State University
24.
Smith, Joshua.
Formal Verification of the Adversarial Robustness Property of Deep Neural Networks Through Dimension Reduction Heuristics, Refutation-based Abstraction, and Partitioning.
Degree: MS, Electrical and Computer Engineering, 2020, Utah State University
URL: https://digitalcommons.usu.edu/etd/7934
► Neural networks are tools that are often used to perform functions such as object recognition in images, speech-to-text, and general data classification. Because neural…
(more)
▼ Neural networks are tools that are often used to perform functions such as object recognition in images, speech-to-text, and general data classification. Because neural networks have been successful at approximating these functions that are difficult to explicitly write, they are seeing increased usage in fields such as autonomous driving, airplane collision avoidance systems, and other safety-critical applications. Due to the risks involved with safety-critical systems, it is important to provide guarantees about the networks performance under certain conditions. As an example, it is critically important that self driving cars with neural network based vision systems correctly identify pedestrians 100% of the time. The ability to identify pedestrians correctly is considered a
safety property of the neural network and this property must be rigorously verified to produce a guarantee of safe functionality. This thesis focuses on a safety property of neural networks called local adversarial robustness. Often, small changes or noise on the input of the network can cause it to behave unexpectedly. Water droplets on the lens of a camera that feeds images to a network for classification may render the classification output useless. When a network is locally robust to adversarial inputs it means that small changes to a known input do not cause the network to behave erratically. Due to some characteristics of neural networks, safety properties like local adversarial robustness are extremely difficult to verify. For example, changing the color of the pedestrians shirt to blue should not effect the network’s classification. What about if the shirt is red? What about all the other colors? What about all the possible color combinations of shirts and pants? The complexity of verifying these safety properties grows very quickly.
This thesis proposes three novel methods for tackling some of the challenges related to verifying safety properties of neural networks. The first is a method to strategically select which dimensions in the input will be searched first. These dimensions are chosen by approximating how much each dimension contributes to the classification output. This helps to manage the issue of high dimensionality. This proposed method is compared with a
state-of-the-art technique and shows improvements in efficiency and quality. The second contribution of this work is an abstraction technique that models regions in the input space by a set of potential adversarial inputs. This set of potential adversarial inputs can be generated and verified much quicker than the entire region. If an adversarial input is found in this set then more expensive verification techniques can be skipped because the result is already known. This thesis introduces the
randomized fast gradient sign method (RFGSM) that better models regions than its predecessor through increased output variance and maintains its high success rate of adversarial input generation. The final contribution of this work is a framework that…
Advisors/Committee Members: Zhen Zhang, Jacob Gunther, Koushik Chakraborty, ;.
Subjects/Keywords: neural networks; formal verification; adversarial robustness; abstraction; adversarial example generation; Electrical and Computer Engineering
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APA (6th Edition):
Smith, J. (2020). Formal Verification of the Adversarial Robustness Property of Deep Neural Networks Through Dimension Reduction Heuristics, Refutation-based Abstraction, and Partitioning. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7934
Chicago Manual of Style (16th Edition):
Smith, Joshua. “Formal Verification of the Adversarial Robustness Property of Deep Neural Networks Through Dimension Reduction Heuristics, Refutation-based Abstraction, and Partitioning.” 2020. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7934.
MLA Handbook (7th Edition):
Smith, Joshua. “Formal Verification of the Adversarial Robustness Property of Deep Neural Networks Through Dimension Reduction Heuristics, Refutation-based Abstraction, and Partitioning.” 2020. Web. 04 Mar 2021.
Vancouver:
Smith J. Formal Verification of the Adversarial Robustness Property of Deep Neural Networks Through Dimension Reduction Heuristics, Refutation-based Abstraction, and Partitioning. [Internet] [Masters thesis]. Utah State University; 2020. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7934.
Council of Science Editors:
Smith J. Formal Verification of the Adversarial Robustness Property of Deep Neural Networks Through Dimension Reduction Heuristics, Refutation-based Abstraction, and Partitioning. [Masters Thesis]. Utah State University; 2020. Available from: https://digitalcommons.usu.edu/etd/7934
Utah State University
25.
Young, Caleb W.
Design of a Sweeping Impedance Probe for the SPORT Mission.
Degree: MS, Electrical and Computer Engineering, 2020, Utah State University
URL: https://digitalcommons.usu.edu/etd/7884
► In our modern world satellite systems are an evermore common part of day to day life. Reliable communication from the ground to these satellites…
(more)
▼ In our modern world satellite systems are an evermore common part of day to day life. Reliable communication from the ground to these satellites is becoming more and more necessary. Plasma scintillations in the ionosphere can make these communications difficult or even impossible. By gaining a better understanding of these scintillations, times of bad satellite connection can be predicted in the same way terrestrial weather gets predicted and reported today. The objective of the SPORT mission is to gain a better understanding of these plasma scintillations. In order to measure plasma density, and gain a better understanding of plasma scintillations, a Sweeping Impedance Probe (SIP) can be used.
It is proposed that the SIP for the SPORT mission be a digital rework of a probe used on the ASSP mission. By using digital processing methods instead of analog methods the new probe can be more accurate in the plasma measurement.
This thesis will describe the theory and design of the SPORT SIP and its advantages over previous analog methods. The design is detailed for both the analog and digital portions of the probe along with a selection of testing data. Potential changes are also discussed.
Advisors/Committee Members: Charles M. Swenson, Jonathan D. Phillips, Jacob Gunther, ;.
Subjects/Keywords: Impedance Probe; SPORT; CSE; Plasma; Ionosphere; Electrical and Computer Engineering; Systems and Communications
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APA (6th Edition):
Young, C. W. (2020). Design of a Sweeping Impedance Probe for the SPORT Mission. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7884
Chicago Manual of Style (16th Edition):
Young, Caleb W. “Design of a Sweeping Impedance Probe for the SPORT Mission.” 2020. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7884.
MLA Handbook (7th Edition):
Young, Caleb W. “Design of a Sweeping Impedance Probe for the SPORT Mission.” 2020. Web. 04 Mar 2021.
Vancouver:
Young CW. Design of a Sweeping Impedance Probe for the SPORT Mission. [Internet] [Masters thesis]. Utah State University; 2020. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7884.
Council of Science Editors:
Young CW. Design of a Sweeping Impedance Probe for the SPORT Mission. [Masters Thesis]. Utah State University; 2020. Available from: https://digitalcommons.usu.edu/etd/7884
Utah State University
26.
Rose, Madison L.
Indoor Source Localization of Radio Frequency Transmitters Using Blind Channel Identification Techniques.
Degree: MS, Electrical and Computer Engineering, 2020, Utah State University
URL: https://digitalcommons.usu.edu/etd/7810
► Locating transmitters is a research area that is becoming increasingly relevant as technology advances. It is especially useful for determining the location of livestock,…
(more)
▼ Locating transmitters is a research area that is becoming increasingly relevant as technology advances. It is especially useful for determining the location of livestock, drones, keys, phones, tablets, etc. As a result of this push for locating devices, many algorithms have been developed to determine source locations. Most source location algorithms and techniques rely on a ‚Äúline of sight‚Äù, or a direct path between the source and the receivers to provide accurate results.
Indoor environments pose a challenge to locating transmitters due to the many surfaces that allow radio waves to interact (reflect, refract, and generally distort) with them. Because of the effects of the radio wave interactions, a direct path from the transmitter to the receivers may not be possible inside, increasing the difficulty. This problem is further augmented when the transmitter is transmitting an unknown signal in an unknown environment.
This research derives algorithms to address these issues. The algorithms are tested via simulations and real-world environmental testing.
Advisors/Committee Members: Todd Moon, Jacob Gunther, Reyhan Baktur, ;.
Subjects/Keywords: source localization; blind channel identification; multipath; cross-relation; Electrical and Computer Engineering
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APA (6th Edition):
Rose, M. L. (2020). Indoor Source Localization of Radio Frequency Transmitters Using Blind Channel Identification Techniques. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7810
Chicago Manual of Style (16th Edition):
Rose, Madison L. “Indoor Source Localization of Radio Frequency Transmitters Using Blind Channel Identification Techniques.” 2020. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7810.
MLA Handbook (7th Edition):
Rose, Madison L. “Indoor Source Localization of Radio Frequency Transmitters Using Blind Channel Identification Techniques.” 2020. Web. 04 Mar 2021.
Vancouver:
Rose ML. Indoor Source Localization of Radio Frequency Transmitters Using Blind Channel Identification Techniques. [Internet] [Masters thesis]. Utah State University; 2020. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7810.
Council of Science Editors:
Rose ML. Indoor Source Localization of Radio Frequency Transmitters Using Blind Channel Identification Techniques. [Masters Thesis]. Utah State University; 2020. Available from: https://digitalcommons.usu.edu/etd/7810
Utah State University
27.
Basu, Prabal.
Toward Reliable, Secure, and Energy-Efficient Multi-Core System Design.
Degree: PhD, Electrical and Computer Engineering, 2019, Utah State University
URL: https://digitalcommons.usu.edu/etd/7517
► Computer hardware researchers have perennially focussed on improving the performance of computers while stipulating the energy consumption under a strict budget. While several innovations…
(more)
▼ Computer hardware researchers have perennially focussed on improving the performance of computers while stipulating the energy consumption under a strict budget. While several innovations over the years have led to high performance and energy efficient computers, more challenges have also emerged as a fallout. For example, smaller transistor devices in modern multi-core systems are afflicted with several reliability and security concerns, which were inconceivable even a decade ago. Tackling these bottlenecks happens to negatively impact the power and performance of the computers. This dissertation explores novel techniques to gracefully solve some of the pressing challenges of the modern computer design. Specifically, the proposed techniques improve the reliability of on-chip communication fabric under a high power supply noise, increase the energy-efficiency of low-power graphics processing units, and demonstrate an unprecedented security loophole of the low-power computing paradigm through rigorous hardware-based experiments.
Advisors/Committee Members: Koushik Chakraborty,, Sanghamitra Roy, Jacob Gunther, ;.
Subjects/Keywords: Network-on-Chip; Power Supply Noise; Near-Threshold Computing; Graphics Processing Unit; Fault Attack; Electrical and Computer Engineering
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APA (6th Edition):
Basu, P. (2019). Toward Reliable, Secure, and Energy-Efficient Multi-Core System Design. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7517
Chicago Manual of Style (16th Edition):
Basu, Prabal. “Toward Reliable, Secure, and Energy-Efficient Multi-Core System Design.” 2019. Doctoral Dissertation, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7517.
MLA Handbook (7th Edition):
Basu, Prabal. “Toward Reliable, Secure, and Energy-Efficient Multi-Core System Design.” 2019. Web. 04 Mar 2021.
Vancouver:
Basu P. Toward Reliable, Secure, and Energy-Efficient Multi-Core System Design. [Internet] [Doctoral dissertation]. Utah State University; 2019. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7517.
Council of Science Editors:
Basu P. Toward Reliable, Secure, and Energy-Efficient Multi-Core System Design. [Doctoral Dissertation]. Utah State University; 2019. Available from: https://digitalcommons.usu.edu/etd/7517
Utah State University
28.
Sakib, Nazmus.
Hardware Accelerator for Star Centroiding.
Degree: MS, Electrical and Computer Engineering, 2020, Utah State University
URL: https://digitalcommons.usu.edu/etd/7748
► Since the dawn of civilization mankind has gazed upon the night sky and looked for directions. In this modern age, the stars have proved…
(more)
▼ Since the dawn of civilization mankind has gazed upon the night sky and looked for directions. In this modern age, the stars have proved to be a reliable reference point for navigation in space. From small-satellites for gathering weather data to inter-planetary missions like Cassini Orbiter, figuring out the location of a spacecraft has been done successfully by taking images of star filed visible from the spacecraft, processing and analyzing the image to find the stars and then finding out from a star catalog which part of the sky the patterns of the visible stars best matches. But a lot of calculation is involved in this process which means it takes up huge amount of power and time to complete. In this research work a hardware will be developed that will reduce the power and increase the speed of this process. The accuracy of this design will be tested under different environmental conditions, modeling the actual region of operation of this design which is the space.
Advisors/Committee Members: Charles M. Swenson, Jonathan Phillips, Jacob Gunther, ;.
Subjects/Keywords: star centroid; digital circuit; parallel processing; Electrical and Computer Engineering
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APA (6th Edition):
Sakib, N. (2020). Hardware Accelerator for Star Centroiding. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7748
Chicago Manual of Style (16th Edition):
Sakib, Nazmus. “Hardware Accelerator for Star Centroiding.” 2020. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7748.
MLA Handbook (7th Edition):
Sakib, Nazmus. “Hardware Accelerator for Star Centroiding.” 2020. Web. 04 Mar 2021.
Vancouver:
Sakib N. Hardware Accelerator for Star Centroiding. [Internet] [Masters thesis]. Utah State University; 2020. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7748.
Council of Science Editors:
Sakib N. Hardware Accelerator for Star Centroiding. [Masters Thesis]. Utah State University; 2020. Available from: https://digitalcommons.usu.edu/etd/7748
Utah State University
29.
Whiting, Samuel.
Radio-Frequency Transmitter Geolocation Using Non-Ideal Received Signal Strength Indicators.
Degree: MS, Electrical and Computer Engineering, 2018, Utah State University
URL: https://digitalcommons.usu.edu/etd/7038
► Locating a radio transmitter is important in a number of problems such as finding radio tags, people with radios, and devices that are collecting…
(more)
▼ Locating a radio transmitter is important in a number of problems such as finding radio tags, people with radios, and devices that are collecting information in an unauthorized manner. Locating a radio transmitter is inherently difficult because the radio waves of concern are not in the visible spectrum, they reflect and distort easily, and they propagate at the speed of light.
A number of methods for locating transmitters are currently used, the majority of which require expensive hardware and extensive processing. This thesis presents a method of using simpler measurements to produce similar location estimates in order to augment or replace current systems. While other systems have significant advantages, the methods proposed in this thesis are advantageous because they only require easily-obtained measurements that are based on the observed power of the transmission.
The research uses simulations and experiments on real-world data collected locally to demonstrate the possibility of locating a transmitter using information of this type. The conclusion is that some methods are able to compensate for the difficulties in the problem more effectively and produce useful location estimates.
Advisors/Committee Members: Todd Moon, Jacob Gunther, Reyhan Baktur, ;.
Subjects/Keywords: geolocation; RSSI; distributed signal processing; Electrical and Computer Engineering; Electrical and Electronics
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Manager
APA (6th Edition):
Whiting, S. (2018). Radio-Frequency Transmitter Geolocation Using Non-Ideal Received Signal Strength Indicators. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7038
Chicago Manual of Style (16th Edition):
Whiting, Samuel. “Radio-Frequency Transmitter Geolocation Using Non-Ideal Received Signal Strength Indicators.” 2018. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7038.
MLA Handbook (7th Edition):
Whiting, Samuel. “Radio-Frequency Transmitter Geolocation Using Non-Ideal Received Signal Strength Indicators.” 2018. Web. 04 Mar 2021.
Vancouver:
Whiting S. Radio-Frequency Transmitter Geolocation Using Non-Ideal Received Signal Strength Indicators. [Internet] [Masters thesis]. Utah State University; 2018. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7038.
Council of Science Editors:
Whiting S. Radio-Frequency Transmitter Geolocation Using Non-Ideal Received Signal Strength Indicators. [Masters Thesis]. Utah State University; 2018. Available from: https://digitalcommons.usu.edu/etd/7038
Utah State University
30.
Vanfleet, Joshua P.
GPS Denied Localization Using Ultra-Wideband Radios.
Degree: MS, Electrical and Computer Engineering, 2018, Utah State University
URL: https://digitalcommons.usu.edu/etd/7091
► GPS denied environments cause each unmanned ground vehicle (UGV) in an autonomous convoy to lose positional accuracy which can lead to inoperability, or even…
(more)
▼ GPS denied environments cause each unmanned ground vehicle (UGV) in an autonomous convoy to lose positional accuracy which can lead to inoperability, or even damage. In order for autonomous convoy systems to fill the needs of any particular field, a well-performing system must be designed such that a convoy can operate in any environment. Ultra-wideband (UWB) radios are a proposed solution to GPS denied localization.The main objective of this research is to use UWB radios to localize a leader vehicle within a convoy situation while in a GPS denied environment.
Advisors/Committee Members: Jacob Gunther, Don Cripps, John Petersen, ;.
Subjects/Keywords: GPS denied; UWB; Convoy; Localization; Electrical and Computer Engineering
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Manager
APA (6th Edition):
Vanfleet, J. P. (2018). GPS Denied Localization Using Ultra-Wideband Radios. (Masters Thesis). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/7091
Chicago Manual of Style (16th Edition):
Vanfleet, Joshua P. “GPS Denied Localization Using Ultra-Wideband Radios.” 2018. Masters Thesis, Utah State University. Accessed March 04, 2021.
https://digitalcommons.usu.edu/etd/7091.
MLA Handbook (7th Edition):
Vanfleet, Joshua P. “GPS Denied Localization Using Ultra-Wideband Radios.” 2018. Web. 04 Mar 2021.
Vancouver:
Vanfleet JP. GPS Denied Localization Using Ultra-Wideband Radios. [Internet] [Masters thesis]. Utah State University; 2018. [cited 2021 Mar 04].
Available from: https://digitalcommons.usu.edu/etd/7091.
Council of Science Editors:
Vanfleet JP. GPS Denied Localization Using Ultra-Wideband Radios. [Masters Thesis]. Utah State University; 2018. Available from: https://digitalcommons.usu.edu/etd/7091
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