Onboard blackbody calibration models of FY-2D SVISSR based on GSICS

Yong Zhang; Xiuqing Hu; Zhiguo Rong

doi:10.1117/12.2068727

19 November 2014 Onboard blackbody calibration models of FY-2D SVISSR based on GSICS

Yong Zhang, Xiuqing Hu, Zhiguo Rong

Proceedings Volume 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III; 92640S (2014) https://doi.org/10.1117/12.2068727
Event: SPIE Asia-Pacific Remote Sensing, 2014, Beijing, China

Abstract

FY-2D is the second Geostationary Operational Meteorological Satellite of China and launched on December 08, 2006. With the launch of FY-2D, Chinese geostationary meteorological satellite observing system formatted of the first binary mode, greatly improving the timeliness of meteorological satellite cloud images. In this paper, the optical structure of the SVISSR onboard FY-2D was introduced. Some key optics on-orbit performances of FY-2D SVISSR were analyzed, including onboard blackbody and cold FPA. The onboard blackbody calibration models were set up and the methodologies were also introduced step by step. Base on the GSCIS calibration results, the model coefficients were determined. The historical FY-2D satellite data were also recalibrated with these models. Based on the comparisons of the calibration coefficients between onboard calibration models, cross calibration with AIRS and operational calibration coefficient in product, the conclusion can be drawn that the calibration results from blackbody models and cross calibration with AIRS were better than operational calibration results in product. The calibration results of blackbody models were agreed well to the cross calibration with AIRS, but the frequency of calibrations with blackbody models were much higher than cross calibration with AIRS. The onboard blackbody calibration models of FY-2D SVISSR based on GSICS can be used to calibrate the satellite infrared data operationally.

Citation Download Citation

Yong Zhang, Xiuqing Hu, and Zhiguo Rong "Onboard blackbody calibration models of FY-2D SVISSR based on GSICS", Proc. SPIE 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III, 92640S (19 November 2014); https://doi.org/10.1117/12.2068727

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KEYWORDS

Calibration

Black bodies

Mirrors

Satellites

Data modeling

Infrared radiation

Meteorological satellites

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