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You searched for subject:(Hyperion EO 1). Showing records 1 – 2 of 2 total matches.

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1. Alana Almeida de Souza. Estudo de fitofisionomias de Cerrado com dados do sensor Hyperion-EO-1.

Degree: 2009, Instituto Nacional de Pesquisas Espaciais

The study of the Brazilian savanna physiognomies (Cerrado) using remote sensing data is still a challenge due to floristic and structural diversity, variation in phenological response to precipitation, relationships with other biomes in the transition zones, and to fire and resultant effects. Because of these factors, some physiognomies are not separable in multispectral images. In this context, the advent of hyperspectral remote sensing, with imaging spectrometers that acquire images in a great number of contiguous and narrow bands in the electromagnetic spectrum, provides new possibilities for the study of this biome. The objective of this investigation was to use hyperspectral Hyperion/EO-1 data for spectral analysis, biophysical parameter estimates and for the discrimination of the Cerrado physiognomies in a study area located in the vicinity of Pirenópolis (GO). The studied physiognomies were: Mata Seca Semidecídua, Cerradão, Cerrado denso, Cerrado típico, Cerrado ralo, Cerrado rupestre, Campo Sujo and Campo Limpo. Field survey for floristic and structural characterization was performed. Spectral analysis included principal components and inspection of pixel spectra. Simple linear regression was applied to band reflectance values, vegetation indices and all possible Hyperion reflectance ratios to estimate biophysical parameters (% canopy cover and basal area). Support Vector Machine (SVM), Maximum Likelihood and the Spectral Angle Mapper (SAM) classification techniques were tested for the discrimination of the physiognomies. Results showed that the structural similarity of the physiognomies produced an equivalent spectral pattern, which explained misclassification of some classes. The chlorophyll red band at 680 nm presented the best correlations with basal area (R2 = 0.63) and with % canopy cover (R2= 0.91). However, spectral transformations (narrow band vegetation indices and reflectance ratios) showed better results (R2 ≥ 0.75). Among the most important spectral transformations for biophysical parameters estimates, vegetation indices associated with the red edge, leaf pigments and leaf water content presented the best results. Linear SVM was the best classification technique with overall classification accuracy of 59.90%. Mata Seca, Cerradão, Cerrado denso and Cerrado rupestre were discriminated. On the other hand, Campo Sujo, Campo Limpo and Cerrado ralo did not present good discrimination to each other with the three tested classification techniques.

O estudo das fitofisionomias de Cerrado via sensoriamento remoto constitui-se de um constante desafio investigativo em razão da diversidade florística e estrutural existente, das variações fenológicas perante o regime de chuvas, de sua inter-relação com outros biomas nos contatos sutis e, ainda, pela ocorrência de queimadas e seus efeitos. Essas características tornam as tipologias muitas vezes indistinguíveis em imagens multiespectrais. Nesse sentido, o advento de sensores imageadores hiperespectrais, por adquirirem imagens em um grande número de…

Advisors/Committee Members: Lênio Soares Galvão, João Roberto dos Santos, Flávio Jorge Ponzoni, Edson Eyji Sano, Alvaro Penteado Crósta.

Subjects/Keywords: Cerrado; Hyperion/EO-1; Sensoriamento remoto hiperespectral; Support; Vector machine (SVM); Brazilian savannah; Hyperion/EO-1; Hyperspectral remote sensing; Support vector machine (SVM)

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

APA (6th Edition):

Souza, A. A. d. (2009). Estudo de fitofisionomias de Cerrado com dados do sensor Hyperion-EO-1. (Thesis). Instituto Nacional de Pesquisas Espaciais. Retrieved from http://urlib.net/sid.inpe.br/[email protected]/2009/03.24.13.43

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Souza, Alana Almeida de. “Estudo de fitofisionomias de Cerrado com dados do sensor Hyperion-EO-1.” 2009. Thesis, Instituto Nacional de Pesquisas Espaciais. Accessed October 28, 2020. http://urlib.net/sid.inpe.br/[email protected]/2009/03.24.13.43.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Souza, Alana Almeida de. “Estudo de fitofisionomias de Cerrado com dados do sensor Hyperion-EO-1.” 2009. Web. 28 Oct 2020.

Vancouver:

Souza AAd. Estudo de fitofisionomias de Cerrado com dados do sensor Hyperion-EO-1. [Internet] [Thesis]. Instituto Nacional de Pesquisas Espaciais; 2009. [cited 2020 Oct 28]. Available from: http://urlib.net/sid.inpe.br/[email protected]/2009/03.24.13.43.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Souza AAd. Estudo de fitofisionomias de Cerrado com dados do sensor Hyperion-EO-1. [Thesis]. Instituto Nacional de Pesquisas Espaciais; 2009. Available from: http://urlib.net/sid.inpe.br/[email protected]/2009/03.24.13.43

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Raut, Bipin. Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites.

Degree: MS, Electrical Engineering and Computer Science, 2019, South Dakota State University

This work extends an empirical absolute calibration model initially developed for the Libya 4 Pseudo-Invariant Calibration Site (PICS) to five additional Saharan Desert PICS (Egypt 1, Libya 1, Niger 1, Niger 2, and Sudan 1), and demonstrates the efficacy of the resulting models at predicting sensor top-of-atmosphere (TOA) reflectance. It attempts to generate absolute calibration models for these PICS that have an accuracy and precision comparable to or better than the current Libya 4 model, with the intent of providing additional opportunities for sensor calibration. In addition, this work attempts to validate the general applicability of the model to other sites. The method uses Terra Moderate Resolution Imaging Spectroradiometer (MODIS) as the reference radiometer and Earth Observing-1 (EO-1) Hyperion image data to provide a representative hyperspectral reflectance profile of the PICS. Data from a region of interest (ROI) in an “optimal region” of 3% temporal, spatial, and spectral stability within the PICS are used for developing the model. The developed models were used to simulate observations of the Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+), Landsat 8 (L8) Operational Land Imager (OLI), Sentinel 2A (S2A) Multispectral Instrument (MSI) and Sentinel 2B (S2B) Multispectral Instrument (MSI) from their respective launch date through 2018. Advisors/Committee Members: Dennis Helder, Morakot Kaewmanee.

Subjects/Keywords: Absolute Calibration; Empirical Model; EO-1 Hyperion; MODIS; PICS; Radiometric Calibration; Electrical and Computer Engineering; Remote Sensing

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

APA (6th Edition):

Raut, B. (2019). Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites. (Masters Thesis). South Dakota State University. Retrieved from https://openprairie.sdstate.edu/etd/3365

Chicago Manual of Style (16th Edition):

Raut, Bipin. “Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites.” 2019. Masters Thesis, South Dakota State University. Accessed October 28, 2020. https://openprairie.sdstate.edu/etd/3365.

MLA Handbook (7th Edition):

Raut, Bipin. “Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites.” 2019. Web. 28 Oct 2020.

Vancouver:

Raut B. Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites. [Internet] [Masters thesis]. South Dakota State University; 2019. [cited 2020 Oct 28]. Available from: https://openprairie.sdstate.edu/etd/3365.

Council of Science Editors:

Raut B. Empirical Absolute Calibration Model for Multiple Pseudo-Invariant Calibration Sites. [Masters Thesis]. South Dakota State University; 2019. Available from: https://openprairie.sdstate.edu/etd/3365

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