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Proceedings Paper

Residual correlations in the solar diffuser measurements of the MODIS Aqua ocean color bands to the sun yaw angle
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Paper Abstract

The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Earth Observing System (EOS) Aqua platform uses biweekly solar diffuser measurements for the radiometric calibration of the ocean color bands. The solar angle relative to the spacecraft changes throughout the year. This document describes correlations in the solar diffuser measurements of the ocean color bands to the sun yaw angle. The functional form of the correlations depends on the position of the respective band and detector on the focal plane. The proposed corrections often exceed 0.5% (peak-to-peak). The most likely source of the correlations is the radiometric characterization of the solar diffuser screen. These results show the importance of a complete prelaunch characterization for spaceborne sensors regarding the radiometric calibration.

Paper Details

Date Published: 22 August 2005
PDF: 12 pages
Proc. SPIE 5882, Earth Observing Systems X, 58820V (22 August 2005); doi: 10.1117/12.620094
Show Author Affiliations
Gerhard Meister, Futuretech Corp. (United States)
Frederick S. Patt, SAIC, NASA Goddard Space Flight Ctr. (United States)
Xiaoxiong Xiong, NASA/GSFC (United States)
Junqiang Sun, Science Systems and Applications Inc. (United States)
Xiaobo Xie, Science Systems and Applications Inc. (United States)
Charles R. McClain, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 5882:
Earth Observing Systems X
James J. Butler, Editor(s)

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