Radiometric calibration of a 100 cm sphere integrating source for VIIRS solar diffuser stability monitor bands

Eugene D. Kim; Vijay Murgai; Reinhard W. Menzel

doi:10.1117/12.929881

15 October 2012 Radiometric calibration of a 100 cm sphere integrating source for VIIRS solar diffuser stability monitor bands

Eugene D. Kim, Vijay Murgai, Reinhard W. Menzel

Author Affiliations +

Proceedings Volume 8510, Earth Observing Systems XVII; 851010 (2012) https://doi.org/10.1117/12.929881
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

The Visible Infrared Imaging Radiometer Suite (VIIRS) sensor on the Joint Polar-orbiting Satellite System (JPSS) mission has a solar diffuser as a reflective band calibrator. Due to UV solarization of the solar diffuser, the Solar Diffuser Stability Monitor (SDSM) is on-board to track the reflectance change of the solar diffuser in visible to near IR wavelengths. A 100 cm Sphere Integrating Source (SIS) has been used to configure and test the SDSM on the ground since MODerate resolution Imaging Spectroradiometer (MODIS) programs. Recent upgrades of the radiance transfer and BRDF measurement instruments in Raytheon have enabled more spectral data and faster measurement time with comparable uncertainty to the previous methods. The SIS has a Radiance Monitor, which has been mainly used as a SIS real-time health checker. It has been observed that the Radiance Monitor response is sufficiently linear and stable thus the Radiance Monitor can be used as a calibrator for ground tests. This paper describes the upgraded SIS calibration instruments, and the changes in the calibration philosophy of the SIS for the SDSM bands.

Citation Download Citation

Eugene D. Kim, Vijay Murgai, and Reinhard W. Menzel "Radiometric calibration of a 100 cm sphere integrating source for VIIRS solar diffuser stability monitor bands", Proc. SPIE 8510, Earth Observing Systems XVII, 851010 (15 October 2012); https://doi.org/10.1117/12.929881

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