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Determination of the NOAA-20 VIIRS TEB RVS from Emissive Radiation Measurements During the Pitch ManeuverThe Visible Infrared Imaging Radiometer Suite (VIIRS) is a key sensor carried on the newly launched (November 18, 2017) Joint Polar Satellite System-1 (JPSS-1), now transitioned to NOAA-20, and the Suomi National Polar-orbiting Partnership (SNPP) satellite. The two VIIRS sensors are nearly identical in design. Its on-board calibration components include a solar diffuser (SD) and a solar diffuser stability monitor (SDSM) for the reflective solar bands (RSB), a V-groove blackbody for the thermal emissive bands (TEB), and a space view (SV) port for background subtraction. These on-board calibrators are located at fixed scan angles. The VIIRS response versus scan angle (RVS) was characterized prelaunch in lab ambient conditions and is currently used to calibrate the on-orbit response for all scan angles relative to the calibrator's scan angle. A spacecraft level pitch maneuver was scheduled during the initial intensive Cal/Val testing for both the NOAA-20 and SNPP. The pitch maneuver provided a rare opportunity for VIIRS to make observations of deep space over the entire scan angle range, which can be used to characterize the TEB RVS. This study provides our analysis of the NOAA-20 pitch maneuver data and assessment of the derived TEB RVS. A comparison between the RVS determined by the pitch maneuver observations and prelaunch lab measurements is conducted for each band, detector, and mirror side of the half angle mirror.
Document ID
20190000822
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Wu, Aisheng
(Science Systems and Applications, Inc. Lanham, MD, United States)
Xiong, Xiaoxiong
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chiang, Kwofu
(Science Systems and Applications, Inc. Lanham, MD, United States)
Date Acquired
February 19, 2019
Publication Date
September 24, 2018
Subject Category
Earth Resources And Remote Sensing
Instrumentation And Photography
Report/Patent Number
GSFC-E-DAA-TN64765
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
VIIRS
Calibration
Prelaunch
Pitch Maneuver
Response vs. Scan Angle
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