Initial on-orbit radiometric calibration of the Suomi NPP VIIRS reflective solar bands

Ning Lei; Zhipeng Wang; Jon Fulbright; Shihyan Lee; Jeff McIntire; Kwofu Chiang; Xiaoxiong Xiong

doi:10.1117/12.930486

15 October 2012 Initial on-orbit radiometric calibration of the Suomi NPP VIIRS reflective solar bands

Ning Lei, Zhipeng Wang, Jon Fulbright, Shihyan Lee, Jeff McIntire, Kwofu Chiang, Xiaoxiong Xiong

Proceedings Volume 8510, Earth Observing Systems XVII; 851018 (2012) https://doi.org/10.1117/12.930486
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

The on-orbit radiometric response calibration of the VISible/Near InfraRed (VISNIR) and the Short-Wave InfraRed (SWIR) bands of the Visible/Infrared Imager/Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (NPP) satellite is carried out through a Solar Diffuser (SD). The transmittance of the SD screen and the SD’s Bidirectional Reflectance Distribution Function (BRDF) are measured before launch and tabulated, allowing the VIIRS sensor aperture spectral radiance to be accurately determined. The radiometric response of a detector is described by a quadratic polynomial of the detector’s digital number (dn). The coefficients were determined before launch. Once on orbit, the coefficients are assumed to change by a common factor: the F-factor. The radiance scattered from the SD allows the determination of the F-factor. In this Proceeding, we describe the methodology and the associated algorithms in the determination of the F-factors and discuss the results.

Citation Download Citation

Ning Lei, Zhipeng Wang, Jon Fulbright, Shihyan Lee, Jeff McIntire, Kwofu Chiang, and Xiaoxiong Xiong "Initial on-orbit radiometric calibration of the Suomi NPP VIIRS reflective solar bands", Proc. SPIE 8510, Earth Observing Systems XVII, 851018 (15 October 2012); https://doi.org/10.1117/12.930486

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