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Radiometric properties of the NS001 Thematic Mapper Simulator aircraft multispectral scannerLaboratory tests of the NS001 TM are described emphasizing absolute calibration to determine the radiometry of the simulator's reflective channels. In-flight calibration of the data is accomplished with the NS001 internal integrating-sphere source because instabilities in the source can limit the absolute calibration. The data from 1987-89 indicate uncertainties of up to 25 percent with an apparent average uncertainty of about 15 percent. Also identified are dark current drift and sensitivity changes along the scan line, random noise, and nonlinearity which contribute errors of 1-2 percent. Uncertainties similar to hysteresis are also noted especially in the 2.08-2.35-micron range which can reduce sensitivity and cause errors. The NS001 TM Simulator demonstrates a polarization sensitivity that can generate errors of up to about 10 percent depending on the wavelength.
Document ID
19920034486
Document Type
Reprint (Version printed in journal)
Authors
Markham, Brian L.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ahmad, Suraiya P.
(ST Systems Corp. Lanham, MD, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Remote Sensing of Environment
Volume: 34
ISSN: 0034-4257
Subject Category
Instrumentation And Photography
Accession Number
92A17110
Distribution Limits
Public
Copyright
Other

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