偏振遥感测量中土壤偏振度随太阳高度角的变化规律初探  

Relationship Between Solar Zenith Angle and Degree of Polarization of Soil in Polarized Remote Sensing

作　　者：杜嘉[1] 赵云升[1] 宋开山[2] 吴太夏[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：《地理科学》2007年第5期707-710,共4页Scientia Geographica Sinica

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

摘　　要：偏振是光的一种基本性质。不同地物或同一地物不同状态产生不同的偏振态,且与波长密切相关,因此探测目标地物偏振信息正成为遥感目标识别的新手段。推导了当光倾斜入射到土壤表面时偏振度与太阳高度角之间的函数关系,总结出其中的变化规律。太阳高度角是影响辐照度的主要因素,研究土壤偏振度随太阳高度角的变化规律,可以为土壤偏振遥感解译提供重要参数,对地物的精确识别和反演有重要的现实意义。Polarization is a basic nature of light. Different state of polarization can be generated by different earth targets or different state of a same earth target, which relates closely to the wavelength, therefore the detection of polarization information of earth target has become a new method of remote sensing target recognition. In this paper, we have inferred the function of solar zenith angles and degree of soil polarization. Solar zenith angle is the primary factor affecting the irradiance, therefore studying the rule of solar zenith angle and degree of soil polarization may provide more important parameters for polarized remote sensing interpretation and help to object precise recognition and inversion.

关 键 词：土壤 偏振度 太阳高度角 偏振遥感 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]