Methods of Earth-view-based calibration of the response versus scan angle of the MODIS reflective solar bands

Kevin A. Twedt; Hongda Chen; Xiaoxiong Xiong; Amit Angal; Xu Geng; Aisheng Wu

doi:10.1117/12.2321231

7 September 2018 Methods of Earth-view-based calibration of the response versus scan angle of the MODIS reflective solar bands

Kevin A. Twedt, Hongda Chen, Xiaoxiong Xiong, Amit Angal, Xu Geng, Aisheng Wu

Author Affiliations +

Proceedings Volume 10764, Earth Observing Systems XXIII; 107641P (2018) https://doi.org/10.1117/12.2321231
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

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.

Citation Download Citation

Kevin A. Twedt, Hongda Chen, Xiaoxiong Xiong, Amit Angal, Xu Geng, and Aisheng Wu "Methods of Earth-view-based calibration of the response versus scan angle of the MODIS reflective solar bands", Proc. SPIE 10764, Earth Observing Systems XXIII, 107641P (7 September 2018); https://doi.org/10.1117/12.2321231

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