偏振遥感中水面溢油偏振度随太阳天顶角的变化规律研究  

Study on changes of solar zenith angle and degree of polarization of oil spilled on water-surface in polarized remote sensing

作　　者：杜嘉[1] 赵云升[1] 宋开山[2] 韩阳[1] 

机构地区：[1]东北师范大学城市与环境科学学院,吉林长春130024 [2]中国科学院东北地理与农业生态研究所,吉林长春130012

出　　处：《海洋环境科学》2008年第5期418-421,共4页Marine Environmental Science

基　　金：国家自然科学基金(49771057);中国科学院知识创新工程重要方向项目(KZCX3-SW-338-1)

摘　　要：水面溢油是最常见的水体污染源之一,在反射、散射和透射电磁辐射的过程中,将表现与它们自身性质有关的偏振特性。因此,对水面溢油的多角度偏振信息探测成为水体定量遥感的一种新手段本文从理论上证明了光倾斜入射到溢油表面时,其反射光存在偏振现象,并进一步推导了偏振度与太阳天顶角之间的函数关系,总结出其中的变化规律。太阳天顶角是影响辐照度的主要因素,研究偏振度随太阳天顶角的变化规律,可以为偏振遥感解译提供重要参数,对溢油的精确识别和反演有重要的现实意义。The oil spilled on water-surface is one of the most popular water pollutions, In the process of reflecting, scattering and transmitting electromagnetic wave, it can produce the polarized characteristics which related to the nature themselves ; therefore, the multiangle polarization information detecting the oil spilled on water-surface could become a new method of quantitative remote sensing. In this paper, it has been proved that the reflected light appears the polarization when the light irradiates the oil spill surface slantwise, and could further infer the function of solar zenith angles and degree of polarization. The solar zenith angle is the primary factor affecting the irradiance. The study on the rule of solar zenith angle and degree of polarization may provide more important parameters for the polarized remote sensing interpretation and help to oil spill precise of recognition and inversion.

关 键 词：偏振遥感 多角度 水面溢油 偏振度 太阳天顶角 

分 类 号：X87[环境科学与工程—环境工程]