Prelaunch radiometric calibration of the J4 VIIRS reflective solar bands

Amit Angal; David Moyer; Qiang Ji; Daniel Link; Xiaoxiong Xiong

doi:10.1117/12.3027849

3 October 2024 Prelaunch radiometric calibration of the J4 VIIRS reflective solar bands

Amit Angal, David Moyer, Qiang Ji, Daniel Link, Xiaoxiong Xiong

Proceedings Volume 13143, Earth Observing Systems XXIX; 131430A (2024) https://doi.org/10.1117/12.3027849
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

The Joint Polar Satellite System 4 (JPSS-4) Visible Infrared Imaging Radiometer Suite (VIIRS) instrument is the fifth in a series (S-NPP VIIRS, JPSS-1,2,3 VIIRS) of highly advanced polar-orbiting environmental satellites. JPSS-4 VIIRS underwent a comprehensive sensor-level Thermal Vacuum (TVAC) testing at the Raytheon Technologies El Segundo facility in the fall of 2023. While the test program provided characterization for many spatial, spectral, and radiometric aspects of the VIIRS sensor performance, this paper focuses on the radiometric performance of the 14 reflective solar bands (RSB) that cover the wavelength range from 0.41 to 2.3 μm. Key calibration parameters, such as the instrument gain, signal-to-noise ratio (SNR), dynamic range and radiometric uniformity, were derived in a TVAC environment for both the primary and redundant electronics at three instrument temperature plateaus: cold, nominal, and hot. This paper shows that all the JPSS-4 VIIRS RSB detectors have been well characterized, with the key performance metrics being comparable to those of the previous VIIRS instruments. Comparison of radiometric performance to sensor requirements, as well as a summary of key sensor testing and performance issues, will also be presented.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Amit Angal, David Moyer, Qiang Ji, Daniel Link, and Xiaoxiong Xiong "Prelaunch radiometric calibration of the J4 VIIRS reflective solar bands", Proc. SPIE 13143, Earth Observing Systems XXIX, 131430A (3 October 2024); https://doi.org/10.1117/12.3027849

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