Positional dependence of the SNPP VIIRS SD BRDF degradation factor

Ning Lei; Xuexia Chen; Tiejun Chang; Xiaoxiong Xiong

doi:10.1117/12.2277715

29 September 2017 Positional dependence of the SNPP VIIRS SD BRDF degradation factor

Ning Lei, Xuexia Chen, Tiejun Chang, Xiaoxiong Xiong

Proceedings Volume 10423, Sensors, Systems, and Next-Generation Satellites XXI; 1042317 (2017) https://doi.org/10.1117/12.2277715
Event: SPIE Remote Sensing, 2017, Warsaw, Poland

Abstract

The Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (SNPP) satellite is a passive scanning radiometer and an imager. The VIIRS regularly performs on-orbit radiometric calibration of its reflective solar bands (RSBs) through observing an onboard sunlit solar diffuser (SD). The reflectance of the SD changes over time and the change is denoted as the SD bidirectional reflectance distribution function degradation factor. The degradation factor, measured by an onboard solar diffuser stability monitor, has been shown to be both incident sunlight and outgoing direction dependent. In this Proceeding, we investigate the factor’s dependence on SD position. We develop a model to relate the SD degradation factor with the amount of solar exposure. We use Earth measurements to evaluate the effectiveness of the model.

Citation Download Citation

Ning Lei, Xuexia Chen, Tiejun Chang, and Xiaoxiong Xiong "Positional dependence of the SNPP VIIRS SD BRDF degradation factor", Proc. SPIE 10423, Sensors, Systems, and Next-Generation Satellites XXI, 1042317 (29 September 2017); https://doi.org/10.1117/12.2277715

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