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Proceedings Paper

Methods of Earth-view-based calibration of the response versus scan angle of the MODIS reflective solar bands
Author(s): Kevin A. Twedt; Hongda Chen; Xiaoxiong Xiong; Amit Angal; Xu Geng; Aisheng Wu
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Paper Abstract

The MODIS instruments on the Terra and Aqua spacecraft are cross-track scanning radiometers that view the Earth scene, a space view port, and the on-board calibrators using a two-sided scan mirror. The reflectivity of the scan mirror varies with the angle of the incident light, and changes in this response versus scan angle (RVS) need to be tracked on orbit in order to maintain accurate calibration. In this paper, we review various methods of RVS calibration of the reflective solar bands using pseudo-invariant desert targets and discuss potential advantages and disadvantages for use in future calibration.

Paper Details

Date Published: 7 September 2018
PDF: 12 pages
Proc. SPIE 10764, Earth Observing Systems XXIII, 107641P (7 September 2018); doi: 10.1117/12.2321231
Show Author Affiliations
Kevin A. Twedt, Science Systems and Applications, Inc. (United States)
Hongda Chen, Science Systems and Applications, Inc. (United States)
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)
Amit Angal, Science Systems and Applications, Inc. (United States)
Xu Geng, Science Systems and Applications, Inc. (United States)
Aisheng Wu, Science Systems and Applications, Inc. (United States)

Published in SPIE Proceedings Vol. 10764:
Earth Observing Systems XXIII
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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