Determination of the NOAA-20 VIIRS TEB RVS from emissive radiation measurements during the pitch maneuver

Aisheng Wu; Xiaoxiong Xiong; Kwofu Chiang

doi:10.1117/12.2324750

23 October 2018 Determination of the NOAA-20 VIIRS TEB RVS from emissive radiation measurements during the pitch maneuver

Aisheng Wu, Xiaoxiong Xiong, Kwofu Chiang

Author Affiliations +

Proceedings Volume 10781, Earth Observing Missions and Sensors: Development, Implementation, and Characterization V; 107811A (2018) https://doi.org/10.1117/12.2324750
Event: SPIE Asia-Pacific Remote Sensing, 2018, Honolulu, Hawaii, United States

Abstract

The 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.

Citation Download Citation

Aisheng Wu, Xiaoxiong Xiong, and Kwofu Chiang "Determination of the NOAA-20 VIIRS TEB RVS from emissive radiation measurements during the pitch maneuver", Proc. SPIE 10781, Earth Observing Missions and Sensors: Development, Implementation, and Characterization V, 107811A (23 October 2018); https://doi.org/10.1117/12.2324750

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KEYWORDS

Sensors

Calibration

Black bodies

Space operations

Long wavelength infrared

Satellites

Detection and tracking algorithms

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