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Proceedings Paper

Design and characterization of a large area uniform radiance source for calibration of a remote sensing imaging system
Author(s): Greg McKee; Samir Pal; Harish Seth; Arun Bhardwaj; Hari Sankar Sahoo
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Paper Abstract

An application-specific contracted integrating sphere source of uniform spectral radiance is described. The source is used for pre-launch test and calibration of imaging radiometers which will be used as satellite borne earth remote sensors. The calibration source is primarily intended to serve as a transfer standard of radiance. Design criteria for the uniform radiance source are presented. Included is a summary of the end-user specifications in regards to spectral radiance, radiance levels of attenuation, radiance stability, and aperture uniformity. Radiometric theory used to predict the source radiance for a specific spectral flux input is reviewed. Reasoning for the use of an integrating sphere platform for this application and characteristic features of the source are discussed. Calibration methods and instrumentation are described. The resultant data presented include the modeled data compared with the measured performance. Methods of data reduction and uncertainty are addressed where applicable.

Paper Details

Date Published: 26 September 2007
PDF: 9 pages
Proc. SPIE 6677, Earth Observing Systems XII, 667706 (26 September 2007); doi: 10.1117/12.732122
Show Author Affiliations
Greg McKee, Labsphere, Inc. (United States)
Samir Pal, Indian Space Research Organisation (India)
Harish Seth, Indian Space Research Organisation (India)
Arun Bhardwaj, Indian Space Research Organisation (India)
Hari Sankar Sahoo, Indian Space Research Organisation (India)

Published in SPIE Proceedings Vol. 6677:
Earth Observing Systems XII
James J. Butler; Jack Xiong, Editor(s)

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