Design and characterization of a large area uniform radiance source for calibration of a remote sensing imaging system

Greg McKee; Samir Pal; Harish Seth; Arun Bhardwaj; Hari Sankar Sahoo

doi:10.1117/12.732122

26 September 2007 Design and characterization of a large area uniform radiance source for calibration of a remote sensing imaging system

Greg McKee, Samir Pal, Harish Seth, Arun Bhardwaj, Hari Sankar Sahoo

Author Affiliations +

Proceedings Volume 6677, Earth Observing Systems XII; 667706 (2007) https://doi.org/10.1117/12.732122
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

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.

Citation Download Citation

Greg McKee, Samir Pal, Harish Seth, Arun Bhardwaj, and Hari Sankar Sahoo "Design and characterization of a large area uniform radiance source for calibration of a remote sensing imaging system", Proc. SPIE 6677, Earth Observing Systems XII, 667706 (26 September 2007); https://doi.org/10.1117/12.732122

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