Spectroscopy and Spectral Analysis, Volume. 31, Issue 6, 1648(2011)
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.
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CHEN Xing-feng, GU Xing-fa, CHENG Tian-hai, LI Zheng-qiang, YU Tao, XIE Dong-hai. Simulation and Analysis of Polarization Characteristics for Real Sea Surface Sunglint[J]. Spectroscopy and Spectral Analysis, 2011, 31(6): 1648
Received: Jul. 18, 2010
Accepted: --
Published Online: Jan. 5, 2012
The Author Email: Xing-feng CHEN (chenxf@irsa.ac.cn)