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The geostationary orbit water color remote sensing satellite has the unique advantage of high time resolution observation, which can accurately obtain the information of ocean color elements, coastal zone observation elements, sea surface temperature and large sea targets. The onboard optical imaging system has the characteristics of large aperture, large incident angle, wide spectrum and multi-channel detection at the same time, so it has high polarization sensitivity. In order to achieve high quantitative application of water-color remote sensing, it is necessary to reduce the influence of polarization sensitivity. According to the characteristics of the water-color remote sensing payload in geostationary orbit, the polarization sensitivity of the system is suppressed by optimizing the structure of the optical system and controlling the polarization sensitivity of the optical film. Then the polarization sensitivity of the system is simulated and modeled by CODEV software, and the macro file based on Mueller matrix is compiled to accurately calculate the polarization of the system in different spectral bands and different fields of view. The results indicated that the polarization sensitivity of the imaging system is better than 1.5% in the visible and near-infrared band.
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