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You searched for subject:(software radio approach). Showing records 1 – 2 of 2 total matches.

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Ohio University

1. Akos, Dennis M. A software radio approach to Global Navigation Satellite System receiver design.

Degree: PhD, Electrical Engineering & Computer Science (Engineering and Technology), 1997, Ohio University

The software radio has been described as the most significant evolution in receiver design since the development of the superheterodyne concept in 1918. The software radio design philosophy is to position an analog-to-digital converter (ADC) as close to the antenna as possible and then process the samples using a combination of software and a programmable microprocessor. There are a number of important advantages to be gained through full exploitation of the software radio concept. The most notable include: 1) The removal of analog signal processing components and their associated nonlinear, temperature-based, and age-based performance characteristics. 2) A single antenna/front-end configuration can be used to receive and demodulate a variety of radio frequency (RF) transmissions. 3) The software radio provides the ultimate simulation/testing environment. Global Navigation Satellite Systems (GNSSs) are the latest and most complex radionavigation systems in widespread use. The United States' Global Positioning System (GPS) and, to a lesser extent, the Russian Global Orbiting Navigation Satellite System (GLONASS) are being targeted for use as next generation aviation navigation systems. As a result, it is critical that a GNSS achieve the reliability and integrity necessary for use within the aerospace system. The receiver design is a key element in achieving the high standards required. This work presents the complete development of a GNSS software radio. A GNSS receiver front end has been constructed, based on the software radio design goals, and has been evaluated against the traditional design. Trade-offs associated with each implementation are presented along with experimental results. Novel bandpass sampling front end designs have been proposed, implemented and tested for the processing of multiple GNSS transmissions. Finally, every aspect of GNSS signal processing has been implemented in software from the necessary spread spectrum acquisition algorithms to those required for a position solution. The GNSS software radio is the first of its kind and will thus bring all the assets associated with the concept into GNSS receiver research. Not only does the work describe the multiple benefits available through a GNSS software radio implementation, but it also establishes the feasibility of such through actual hardware design and experimental results. Advisors/Committee Members: Braasch, Michael (Advisor).

Subjects/Keywords: software radio approach; Global Navigation Satellite System; GNSS; Russian Global Orbiting Navigation Satellite System; analog-to-digital converter

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Akos, D. M. (1997). A software radio approach to Global Navigation Satellite System receiver design. (Doctoral Dissertation). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1174615606

Chicago Manual of Style (16th Edition):

Akos, Dennis M. “A software radio approach to Global Navigation Satellite System receiver design.” 1997. Doctoral Dissertation, Ohio University. Accessed November 12, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1174615606.

MLA Handbook (7th Edition):

Akos, Dennis M. “A software radio approach to Global Navigation Satellite System receiver design.” 1997. Web. 12 Nov 2019.

Vancouver:

Akos DM. A software radio approach to Global Navigation Satellite System receiver design. [Internet] [Doctoral dissertation]. Ohio University; 1997. [cited 2019 Nov 12]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1174615606.

Council of Science Editors:

Akos DM. A software radio approach to Global Navigation Satellite System receiver design. [Doctoral Dissertation]. Ohio University; 1997. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1174615606

2. Bauer, Zachary Obenour. A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration.

Degree: MS, Electrical Engineering (Engineering and Technology), 2013, Ohio University

This thesis presents a demonstrated method for the performance of a calibration method for a controlled reception pattern antenna (CRPA) using a Software Defined Radio (SDR) configuration. The combination CRPA and SDR system consists of a low-cost 7-element configuration where the antenna RF inputs are feed directly into the multi-channel SDR system. This combination CRPA and SDR system was characterized in an anechoic chamber environment to closely replicate the fielded antenna/receiver system. This combined CRPA and SDR system calibration method configuration can provide multi-antenna element characterization and calibration measurements that can be used to remove carrier and code phase biases caused by the antenna elements and receiver front-end components for down-stream adaptive signal processing algorithms. For verification, the calibration data produced by the CRPA/SDR system configuration will be compared with calibration data produced using a traditional CRPA anechoic chamber test approach where each element of the array is characterized one at a time with a traditional antenna test approach. Advisors/Committee Members: Bartone, Chris G. (Advisor).

Subjects/Keywords: Aerospace Engineering; Electrical Engineering; Calibration method for CRPA/SDR Configuration; Controlled Reception Pattern Antenna, Software Defined Radio; Multi-channel SDR receiver system; Multi-antenna element characterization; Anechoic chamber test approach; carrier and code phase biases

…Filter RHCP Right Hand Circularly Polarized SDR Software Defined Radio SMA SubMiniature… …for a CRPA using a Software Defined Radio (SDR) configuration. The combination… …Locked Oscillator Q Quadrature-phase RF Radio Frequency RF-BPF Radio Frequency Band-pass… …time-synchronized radio frequency (RF) signals transmitted from orbiting satellite… …approach and landing systems [4] [5] [6] [7]. Precision… 

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Bauer, Z. O. (2013). A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357402542

Chicago Manual of Style (16th Edition):

Bauer, Zachary Obenour. “A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration.” 2013. Masters Thesis, Ohio University. Accessed November 12, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357402542.

MLA Handbook (7th Edition):

Bauer, Zachary Obenour. “A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration.” 2013. Web. 12 Nov 2019.

Vancouver:

Bauer ZO. A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration. [Internet] [Masters thesis]. Ohio University; 2013. [cited 2019 Nov 12]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357402542.

Council of Science Editors:

Bauer ZO. A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration. [Masters Thesis]. Ohio University; 2013. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357402542

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