JPSS-1 VIIRS prelaunch RSB/DNB RVS characterization and water vapor correction

Shihyan Lee; Changyong Cao

doi:10.1117/12.2196148

8 September 2015 JPSS-1 VIIRS prelaunch RSB/DNB RVS characterization and water vapor correction

Shihyan Lee, Changyong Cao

Proceedings Volume 9607, Earth Observing Systems XX; 96071R (2015) https://doi.org/10.1117/12.2196148
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The accuracy of pre-launch VIIRS response versus scan angle (RVS) characterization is vitally important to the quality of calibrated radiance products. The RVS correct the optical system’s scan angle dependency with respect to the calibrator scan angle. In this document, we describe the methodology used in JPSS-1 RSB RVS characterization and the efficacy of MODTRAN5 in water vapor correction. The RVS is characterized using a 2^nd order polynomial fit over the measured scan angles. The results show high fitting accuracy for all bands except for M9 due to water vapor absorption. To improve M9 RVS, MODTRAN®5 is used to correction water vapor absorption variation during the RVS measurements. This correction greatly reduced M9 RVS characterization uncertainty with a RVS that is up to 0.4% difference compared with RVS prior to water vapor correction.

Citation Download Citation

Shihyan Lee and Changyong Cao "JPSS-1 VIIRS prelaunch RSB/DNB RVS characterization and water vapor correction", Proc. SPIE 9607, Earth Observing Systems XX, 96071R (8 September 2015); https://doi.org/10.1117/12.2196148

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