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

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

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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

Publication year - 2018

Publication title -

nasa sti repository (national aeronautics and space administration)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.1117/12.2321231

Subject(s) - remote sensing , radiometer , spacecraft , calibration , optics , reflectivity , physics , computer science , environmental science , geology , astronomy , quantum mechanics

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.

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