VIIRS day-night band gain and offset determination and
performance

J. Geis; C. Florio; D. Moyer; K. Rausch; F. J. De Luccia

doi:10.1117/12.930078

15 October 2012 VIIRS day-night band gain and offset determination and performance

J. Geis, C. Florio, D. Moyer, K. Rausch, F. J. De Luccia

Proceedings Volume 8510, Earth Observing Systems XVII; 851012 (2012) https://doi.org/10.1117/12.930078
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

On October 28th, 2011, the Visible-Infrared Imaging Radiometer Suite (VIIRS) was launched on-board the Suomi National Polar-orbiting Partnership (NPP) spacecraft. The instrument has 22 spectral bands: 14 reflective solar bands (RSB), 7 thermal emissive bands (TEB), and a Day Night Band (DNB). The DNB is a panchromatic, solar reflective band that provides visible through near infrared (IR) imagery of earth scenes with radiances spanning 7 orders of magnitude. In order to function over this large dynamic range, the DNB employs a focal plane array (FPA) consisting of three gain stages: the low gain stage (LGS), the medium gain stage (MGS), and the high gain stage (HGS). The final product generated from a DNB raw data record (RDR) is a radiance sensor data record (SDR). Generation of the SDR requires accurate knowledge of the dark offsets and gain coefficients for each DNB stage. These are measured on-orbit and stored in lookup tables (LUT) that are used during ground processing. This paper will discuss the details of the offset and gain measurement, data analysis methodologies, the operational LUT update process, and results to date including a first look at trending of these parameters over the early life of the instrument.

Citation Download Citation

J. Geis, C. Florio, D. Moyer, K. Rausch, and F. J. De Luccia "VIIRS day-night band gain and offset determination and performance", Proc. SPIE 8510, Earth Observing Systems XVII, 851012 (15 October 2012); https://doi.org/10.1117/12.930078

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