Validation of radiometric standards for the laboratory calibration of reflected-solar Earth-observing satellite instruments

James J. Butler; B. Carol Johnson; Joseph P. Rice; Steven W. Brown; Robert A. Barnes

doi:10.1117/12.733922

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26 September 2007 Validation of radiometric standards for the laboratory calibration of reflected-solar Earth-observing satellite instruments

James J. Butler, B. Carol Johnson, Joseph P. Rice, Steven W. Brown, Robert A. Barnes

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Proceedings Volume 6677, Earth Observing Systems XII; 667707 (2007) https://doi.org/10.1117/12.733922
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Historically, the traceability of the laboratory calibration of Earth-observing satellite instruments to a primary radiometric reference scale (SI units) is the responsibility of each instrument builder. For the NASA Earth Observing System (EOS), a program has been developed using laboratory transfer radiometers, each with its own traceability to the primary radiance scale of a national metrology laboratory, to independently validate the radiances assigned to the laboratory sources of the instrument builders. The EOS Project Science Office also developed a validation program for the measurement of onboard diffuse reflecting plaques, which are also used as radiometric standards for Earth-observing satellite instruments. Summarized results of these validation campaigns, with an emphasis on the current state-of-the-art uncertainties in laboratory radiometric standards, will be presented. Future mission uncertainty requirements, and possible enhancements to the EOS validation program to ensure that those uncertainties can be met, will be presented.

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James J. Butler, B. Carol Johnson, Joseph P. Rice, Steven W. Brown, and Robert A. Barnes "Validation of radiometric standards for the laboratory calibration of reflected-solar Earth-observing satellite instruments", Proc. SPIE 6677, Earth Observing Systems XII, 667707 (26 September 2007); https://doi.org/10.1117/12.733922

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