23 September 2014 VIIRS reflective solar bands on-orbit calibration coefficient performance using imagery and moderate band intercomparisons
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Abstract
A primary sensor on-board the Suomi-National Polar-orbiting Partnership (SNPP) spacecraft, the Visible Infrared Imaging Radiometer Suite (VIIRS) has 22 bands: 7 thermal emissive bands (TEBs), 14 reflective solar bands (RSBs) and a Day Night Band (DNB). The RSBs cover the spectral wavelengths between 0.412 to 2.25 μm and have three (I1-I3) 371m and eleven (M1-M11) 742m spatial resolution bands. A VIIRS Key Performance Parameter (KPP) is the Ocean Color/Chlorophyll (OCC) which uses moderate bands M1 (0.412μm) through M7’s (0.865 μm) calibrated Science Data Records (SDRs). The RSB SDRs rely on prelaunch calibration coefficients which use a quadratic algorithm to convert the detector’s response to calibrated radiance. This paper will evaluate the performance of these prelaunch calibration coefficients using SDR comparisons between bands with the same spectral characteristics: I2 with M7 (0.865 μm) and I3 with M10 (1.610 μm). Changes to the prelaunch calibration coefficient’s offset term c0 to improve the SDR’s performance at low radiance levels will also be discussed.
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D. Moyer, D. Moyer, N. Vandermierden, N. Vandermierden, K. Rausch, K. Rausch, F. De Luccia, F. De Luccia, } "VIIRS reflective solar bands on-orbit calibration coefficient performance using imagery and moderate band intercomparisons", Proc. SPIE 9223, Remote Sensing System Engineering V, 922305 (23 September 2014); doi: 10.1117/12.2062065; https://doi.org/10.1117/12.2062065
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