The in-flight absolute radiometric calibration of the Thematic Mapper (TM) is being conducted using the results of field measurements at White Sands, New Mexico. These measurements are made to characterize the ground and atmosphere at the time the TM is acquiring an image of White Sands. The data are used as input to a radiative transfer code that computes the radiance at the entrance pupil of the TM. The calibration is obtained by comparing the digital counts associated with the TM image of the measured ground site with the radiative transfer code result. The calibrations discussed here are for the first four visible and near-infrared bands of the TM. In this dissertation the data reduction for the first calibration attempts on January 3, 1983, and July 8, 1984, is discussed. Included are a review of radiative transfer theory and a discussion of model atmospheric parameters as defined for the White Sands area. These model parameters are used to assess the errors associated with the calibration procedure. Each input parameter to the radiative transfer code is varied from its model value in proportion to the uncertainty with which it can be determined. The effects of these uncertainties on the predicted radiances are determined. It is thought that the optical depth components τ(Ray), τ(Mie), τ(oz), and τ(H₂O) can be measured to within 10%, 2%, 10%, and 30%, respectively. For the white gypsum sand, surface reflectance uniformity is on the order of 1.5%, and the overall uncertainty in measured reflectance is about 2%. This is due to an uncertainty in the reflectance factor of the calibration plates. The greatest uncertainty in calibration is attributed to our uncertainty in the aerosol parameters, in particular the imaginary component of refractive index. The cumulative effect of these uncertainties is thought to produce an uncertainty in computed radiance of about 5%.

No description available.

Thesis (M.S.)--Brigham Young University. Dept. of Geography, 2006. / Includes bibliographical references (p. 50-53).

Thesis (B.S.)--Rochester Institute of Technology, 1983. / Typescript. Includes bibliographical references.

Thesis (M.S.)--Rochester Institute of Technology, 1987. / Typescript. Includes bibliographical references (leaves 129-134).

Thèses (M.Env.)--Université de Sherbrooke (Canada), 2005. / In ProQuest dissertations and theses. Titre de l'écran-titre (visionné le 17 oct. 2007). Publié aussi en version papier.

Thèses (M.Sc.)--Université de Sherbrooke (Canada), 2006. / Titre de l'écran-titre (visionné le 23 juin 2008). In ProQuest dissertations and theses. Publié aussi en version papier.

Thesis (M.A.)--Carleton University, 1988. / Also available in electronic format on the Internet.

Texte remanié de: Doctoral diss.--Austin--University of Texas, 1992. Titre de soutenance : Privatizing space-derived data : a case study of the effects of the Land remote-sensing commercialization act of 1984 on the academic geography community. / Notes bibliogr. Bibliogr. p.287-314. Index.

Orientador: Hans Peter Bahr / Dissertação (mestrado) - Universidade Federal do Paraná. Curso de Pós-Graduação em Ciências Geodésicas / Resumo: O presente trabalho, dividido em 6 capítulos e um apêndice, tem por objetivo básico a análise fotogramétrica da precisão geométrica de uma imagem LANDSAT MSS BULK processada no Brasil. Nos capítulos 1 e 2, faz-se um retrospecto sobre a exploração das técnicas de sensoriamento remoto através das imagens LANDSAT; faz-se uma citação da bibliografia disponível, e um pequeno resumo sobre as perspectivas de aplicações de outras imagens de satélites. No capítulo 3 são descritos os procedimentos empregados para a medição das coordenadas nas cartas e na imagem, com utilização do PLANICOMP C 100. No capítulo 4 são desenvolvidas as transformações matemáticas necessárias a homogeneização das coordenadas de imagem. No capítulo 5 são mostrados os procedimentos desenvolvidos para analisar a geometria da imagem LANDSAT MSS BULK através de quatro diferentes modelos matemáticos. Finalmente, no capítulo 6, faz-se a análise dos resultados obtidos e se tiram as respectivas conclusões para, daí, apresentar-se algumas recomendações uteis sobre o uso das imagens de satélites, visando-se atingir precisões mais adequadas às aplicações cartográficas. No apêndice (F1 87 a 270 ) são apresentadas, ainda, as listagens de todos os programas em Linguagem Fortran e cálculos desenvolvidos no decorrer da pesquisa. / Abstract: This work consists in six chapters and one appendix, and its basic aim, is the photogrammetrical analysis for geometric accuracy of a LANDSAT MSS BULK imagery processed in Brazil. Chapter 1 and 2 studies the remote sensing practice with LANDSAT imagery. Gives a list of books about the matter and a summary about future aplications of sattelite imagery. Chapter 3 gives the procedure method of coordinate measurament in maps and images using the PLANICOMP C 100. In Chapter 4 mathematical transforma tions are developments with the scope of to make homogeneus the image coordinates . Chapter 5 gives the procedure to analyse the geometry of a LANDSAT MSS BULK imagery with four different mathematical models. Chapter 6, finally, makes analysis of the obtained results and are given the respective conclusions, and presents some usefull recomendations about the sattelite imagery use, with the aim to improve the occuracy to cartographic aplications. The appendix (pg 87 to 270) presents a list of all programs in FORTRAN Language and the mathematical results, developed all over this research