Simulation and Analysis of Polarization Characteristics for Real Sea Surface Sunglint

The sea surface sunglint is caused by specular reflectance.Water is a kind of dark target with a very low reflectance,so sunglint becomes a big noise in the aerial or aerospace remote sensing images;sunglint is strongly polarized,and can be a natural standard light source for polarized sensor in-flight calibration;sunglint also can be utilized to retrieve gaseous constituents and aerosol properties.For both de-noising and being standard light source,the radiative physic parameters should be calculated accurately.First,A 3-D sea surface model was constituted according to the Cox Munk model;Second,the polarized radiative model of sunglint was deduced based on the 3-D sea surface model and polarized Fresnel reflectance law;Third,the sensitivities of solar-viewing relative azimuth,zenith,wind speed and wind direction were analyzed utilizing the polarized radiative model.The polarization characteristics analysis of sunglint provides a theoretical basis for the quantitative remote sensing retrievals which uses sunglint.