31 October 2005 Detection of the degradation of CBERS-02 CCD camera
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Abstract
The China-Brazil Earth Resources Satellite (CBERS) was developed by China in cooperation with Brazil. As one of the most important payload, CCD camera is expected to play an important role in the application of CBERS. Vicarious calibrations have been conducted every one year and cross-calibration is one of the methods to the calibration. Our effort is to probe the methodology of radiometric cross-calibration the CCD with MODIS and detect the degradation of the CCD camera since it was launched. The radiometric and reflectance coefficients and offsets for four CCD spectral bands were obtained based on the cross-calibration with four calibration targets. Results were validated by the synchro surface targets spectral measurement at Dunhuang site. The TOA radiances from calculation and simulation were consistent within 1%. Comparing our results with the coefficients based on vicarious calibration show that the average variation of the two independent methods was with 6%. Based on many times of radiometric-cross calibration of the CCD with the MODIS, the time series of radiometric coefficients for the CCD were obtained. Results illuminated that the response of the CCD have degraded, which could reach up to 3%- 7% per month
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Xiaoying Li, Xiaoying Li, Xingfa Gu, Xingfa Gu, Tao Yu, Tao Yu, Xiangjun Min, Xiangjun Min, Yong Zhang, Yong Zhang, Xiaowen Li, Xiaowen Li, } "Detection of the degradation of CBERS-02 CCD camera", Proc. SPIE 5983, Remote Sensing for Environmental Monitoring, GIS Applications, and Geology V, 59831M (31 October 2005); doi: 10.1117/12.626756; https://doi.org/10.1117/12.626756
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