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Performance Assessments and Comparisons of S-NPP and NOAA-20 (JPSS-1) VIIRS On-Orbit CalibrationThe first Visible Infrared Imaging Radiometer Suite (VIIRS) instrument has been in operation for more than 6 years on-board the S-NPP satellite and the second instrument, with the same design and performance requirements, was launched in November, 2017 on-board the JPSS-1 satellite (named NOAA-20 after reaching its orbit) and is currently in normal operation conditions. This paper provides a brief description of VIIRS on-orbit calibration and characterization activities and presents performance assessments and comparisons of S-NPP and NOAA-20 VIIRS using data collected from their on-board calibrators (OBC) and regularly scheduled lunar observations. Results show that NOAA-20 VIIRS is performing as well or better than S-NPP VIIRS in all of the key performance metrics. The NOAA-20 reflective solar bands, including the day-night band, have experienced less than 1% change in gain in the first 250 days since launch and did not suffer from the contamination related rapid degradation experienced by S-NPP VIIRS. Some of the NOAA20 thermal emissive bands had larger than expected gain degradation after launch due to ice buildup on the dewar window of the long-wave IR focal plane assembly but a mid-mission outgassing operation was able to restore their gains and maintain stable behavior. Though this study is focused on the sensor's key performance parameters, such as detector responses (gains), signal-to-noise ratios, and noise-equivalent temperature differences, challenges identified and lessons learned through different phases of on-orbit calibration and characterization are also discussed.
Document ID
20190000314
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Xiong, Xiaoxiong (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Angal, Amit (Science Systems and Applications, Inc. Moffett Field, CA, United States)
Butler, James (Orbital Sciences Corporation (ATK) Moffett Field, CA, United States)
Chen, Hongda (Science Systems and Applications, Inc. Moffett Field, CA, United States)
Chiang, Vincent (Science Systems and Applications, Inc. Moffett Field, CA, United States)
Lei, Ning (Science Systems and Applications, Inc. Moffett Field, CA, United States)
Li, Yonghong (Science Systems and Applications, Inc. Moffett Field, CA, United States)
Twedt, Kevin (Science Systems and Applications, Inc. Moffett Field, CA, United States)
Date Acquired
January 31, 2019
Publication Date
September 10, 2018
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN62213
Meeting Information
Meeting: SPIE Remote Sensing (SPIE Europe)
Location: Berlin
Country: Germany
Start Date: September 10, 2018
End Date: September 13, 2018
Sponsors: SPIE Europe
Funding Number(s)
CONTRACT_GRANT: NNG14FC04C
CONTRACT_GRANT: NNG15HQ01C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
DNB
S-NPP
Moon
VIIRS
calibration
NOAA-20
on-board calibrators

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