Share Email Print
cover

Proceedings Paper

Initial calibration activities and performance assessments of NOAA-20 VIIRS
Author(s): Xiaoxiong Xiong; Hassan Oudrari; Jeff McIntire; Ning Lei; Kwofu Chiang; Amit Angal
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The second VIIRS instrument was launched on-board the NOAA-20 (formerly JPSS-1) satellite on November 18, 2017. It was designed and built with the same performance requirements as the first VIIRS on-board the S-NPP launched on October 28, 2011. Currently, the NOAA-20 is orbiting the Earth in the same plane as the S-NPP but separated in time and space by 50 minutes. The VIIRS observations are made in 22 spectral bands, including a day-night band (DNB) that cover wavelengths from visible to long-wave infrared. The sensor’s on-orbit calibration is provided by a set of on-board calibrators (OBCs), which include a solar diffuser (SD), a solar diffuser stability monitor (SDSM), and a blackbody (BB). After turn-on, the VIIRS instrument conducted a series of post-launch testing (PLT) and intensive calibration and validation (ICV) activities, including those performed via spacecraft maneuvers, designed to verify and establish instrument on-orbit calibration performance baseline. This paper provides an overview of NOAA-20 VIIRS ICV activities and an assessment of its initial on-orbit performance with a focus on several key calibration parameters, such as the detector response (or gain), dynamic range, and signal-to-noise ratio (SNR). Various issues identified and lessons learned from initial instrument operation and calibration are also discussed in support of long-term monitoring (LTM) of NOAA-20 VIIRS calibration and data quality.

Paper Details

Date Published: 23 October 2018
PDF: 13 pages
Proc. SPIE 10781, Earth Observing Missions and Sensors: Development, Implementation, and Characterization V, 107810L (23 October 2018); doi: 10.1117/12.2326897
Show Author Affiliations
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)
Hassan Oudrari, Science Systems and Applications, Inc. (United States)
Jeff McIntire, Science Systems and Applications, Inc. (United States)
Ning Lei, Science Systems and Applications, Inc. (United States)
Kwofu Chiang, Science Systems and Applications, Inc. (United States)
Amit Angal, Science Systems and Applications, Inc. (United States)


Published in SPIE Proceedings Vol. 10781:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization V
Xiaoxiong Xiong; Toshiyoshi Kimura, Editor(s)

© SPIE. Terms of Use
Back to Top