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NOAA-20 VIIRS Thermal Emissive Bands On-Orbit PerformanceThe VIIRS (Visible Infrared Imaging Radiometer Suite) instrument onboard the NOAA-20 satellite (launched on November 18, 2017) started to collect Earth-view data after its nadir door opened on December 13, 2017. Seven of the VIIRS bands, I4-5 and M12-16 are thermal emissive bands (TEBs), covering a spectral range from 3.6 to 12.5 meters. They began collecting valid data after the cold focal plane assembly (CFPA) cooled down to its nominal operating temperature on January 6, 2018. This paper will present the performance of each TEB, including calibration coefficients, noise equivalent differential temperature (NEdT), on-orbit calibration coefficient estimates from scheduled onboard blackbody warm-up and cool-down (WUCD) data, as well as related telemetry temperatures. Several methods are tested and compared in the WUCD data analysis for estimating the calibration coefficients. Based on the preliminary results, the NEdT of each band is well below the design specification and very close to that of the VIIRS onboard the Suomi National Polar-orbiting Partnership (SNPP) satellite. The detector gains appear stable for bands on the short- and mid-wave infrared CFPA, whereas the detector gains have larger than expected degradation for bands on the long-wave infrared CFPA during the early mission. All TEB-related telemetry temperatures are stable. The on-orbit performance of NOAA-20 VIIRS TEB is compared with VIIRS onboard the SNPP.
Document ID
20190000660
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Li, Yonghong (Science Systems and Applications, Inc. Lanham, MD, United States)
Xiong, Xiaoxiong (NASA Goddard Space Flight Center Greenbelt, MD, United States)
McIntire, Jeff (Science Systems and Applications, Inc. Lanham, MD, United States)
Angal, Amit (Science Systems and Applications, Inc. Lanham, MD, United States)
Gusev, Sergey (Global Science and Technology, Inc. Greenbelt, MD, United States)
Chiang, Kwofu (Science Systems and Applications, Inc. Lanham, MD, United States)
Date Acquired
February 12, 2019
Publication Date
September 24, 2018
Subject Category
Earth Resources And Remote Sensing
Meteorology And Climatology
Report/Patent Number
GSFC-E-DAA-TN64686
Meeting Information
Meeting: SPIE Asia-Pacific Remote Sensing
Location: Honolulu, HI
Country: United States
Start Date: September 24, 2018
End Date: September 26, 2018
Sponsors: International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: NNG15HQ01C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Thermal Emissive Bands (TEB)
Visible Infrared Imaging Radiometer Suite (VIIRS)

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