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Proceedings Paper

On-orbit calibration and performance of S-NPP VIIRS DNB
Author(s): H. Chen; C. Sun; X. Chen; K. Chiang; X. Xiong
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Paper Abstract

The S-NPP VIIRS instrument has successfully operated since its launch in October 2011. The VIIRS Day-Night Band (DNB) is a panchromatic channel covering wavelengths from 0.5 to 0.9 μm that is capable of observing Earth scenes during both day and nighttime orbits at a spatial resolution of 750 m. To cover the large dynamic range, the DNB operates at low, mid, or high gain stages, and it uses an onboard solar diffuser (SD) for its low gain stage calibration. The SD observations also provide a means to compute gain ratios of low-to-mid and mid-to-high gain stages. This paper describes the DNB on-orbit calibration methodologies used by the VIIRS Characterization Support Team (VCST) in supporting the NASA earth science community with consistent VIIRS sensor data records (SDRs) made available by the Land Science Investigator-led Processing Systems (SIPS). It provides an assessment and update of DNB on-orbit performance, including the SD degradation in the DNB spectral range, detector gain and gain ratio trending, stray light contamination and its correction. Also presented in this paper are performance validations based on earth scenes and lunar observations.

Paper Details

Date Published: 2 May 2016
PDF: 12 pages
Proc. SPIE 9881, Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV, 98812B (2 May 2016); doi: 10.1117/12.2225105
Show Author Affiliations
H. Chen, Science Systems and Applications, Inc. (United States)
C. Sun, Global Science Technology, Inc. (United States)
X. Chen, Science Systems and Applications, Inc. (United States)
K. Chiang, Science Systems and Applications, Inc. (United States)
X. Xiong, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 9881:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV
Xiaoxiong J. Xiong; Saji Abraham Kuriakose; Toshiyoshi Kimura, Editor(s)

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