Validation and Analysis of In-Flight Radiation Properties of CCD Camera on HJ-1A/B Satellite

Abstract

Abstract:

In order to analyze the radiation property changing and the validity of calibration for HJ-1A/B CCD cameras, a validation method based on multi-spectral reflectance field targets is developed. Firstly, the in-flight validation method for radiation properties of HJ-1A/B CCD is introduced, and the equivalent radiance of HJ-1A/B CCD was calculated by using satellite-field synchronous measurements data in 2013. Then the radiometric calibration results of HJ-1A/B CCD are validated, and the trend of change of in-flight radiation properties of HJ-1A/B CCD is analyzed. The results show that the radiation properties of HJ-1A/B CCD change ceaselessly, and the attenuation of radiation properties of HJ-1A/B CCD is from 3.7% to 39.6% since launched, in-flight calibration for satellites is important to satisfy requirement of quantitative applications of remote sensing data.

Key words: HJ-1A/B satellite, CCD, radiation properties, validation and analysis

CLC Number:

HAN Qi-Jin, FU Qiao-Yan, ZHANG Xue-Wen, WANG Ai-Chun, LIU Li. Validation and Analysis of In-Flight Radiation Properties of CCD Camera on HJ-1A/B Satellite[J]. Journal of Atmospheric and Environmental Optics, 2014, 9(1): 29-36.

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