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Proceedings Paper

Effect of the SDSM detector relative spectral response in determining the degradation coefficient of the SNPP VIIRS solar diffuser reflectance
Author(s): Ning Lei; Zhipeng Wang; Jon Fulbright; Xiaoxiong Xiong
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Paper Abstract

The Visible/Infrared Imager Radiometer Suite (VIIRS) instrument aboard the Suomi National Polarorbiting Partnership (SNPP) satellite performs its radiometric calibration in the reflective solar bands (RSB) wavelength region primarily through observing the sunlight scattered from the onboard Solar Diffuser (SD). The degradation (over time) of the SD reflectance is determined by the onboard Solar Diffuser Stability Monitor (SDSM). The SDSM detector relative spectral response (RSR) over the out-ofband (OOB) wavelength region leads to a non-negligible bias to the originally determined SD degradation coefficient over wavelengths from 412 nm to 488 nm. In this Proceeding, we consider the out-of-band contribution to determine the bias. Our computation shows that the bias to the degradation coefficient is larger at a shorter wavelength and increases with time. On the 564th day after launch (~ orbit 8000), at a wavelength of 412 nm, the bias (OOB-corrected – not-OOB-corrected) has a mean of -0.021, and at a wavelength of 445 nm, the bias has a mean of -0.009.

Paper Details

Date Published: 23 September 2013
PDF: 7 pages
Proc. SPIE 8866, Earth Observing Systems XVIII, 88661I (23 September 2013); doi: 10.1117/12.2024415
Show Author Affiliations
Ning Lei, Sigma Space Corp. (United States)
Zhipeng Wang, Sigma Space Corp. (United States)
Jon Fulbright, Sigma Space Corp. (United States)
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 8866:
Earth Observing Systems XVIII
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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