基于地表偏振反射模型的植被冠层偏振反射特性研究  

Polarized Reflectance Characteristics of Vegetation Canopies Based on Polarization Reflection Model

作　　者：孙仲秋[1] 赵云升[1] 

机构地区：[1]东北师范大学地理科学学院,吉林长春130024

出　　处：《激光与光电子学进展》2016年第10期250-258,共9页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(41401379)

摘　　要：基于野外与实验室多角度偏振测量信息与偏振反射物理机理,分析了不同植被冠层的偏振反射特性,同时得到了两个地表偏振反射模型的参数。结果发现,植被冠层的偏振反射比值与入射、探测几何相关;植被冠层的偏振反射具有明显的各向异性特征,且与植被冠层的结构形态相关;地表测量的植被冠层偏振反射比可达0.095,远大于以往结果;偏振反射模型可以有效地计算出一般植被冠层的偏振反射信息,但是对于完全平展型且有光滑叶片的冠层却会出现较大误差。The polarized reflectance characteristics of different vegetation canopies are analyzed based on field and laboratory multi-angle polarization measurements and physical mechanism of polarized reflectance. The parameters of two polarized reflectance models are obtained respectively. The results show that the polarized reflectance factors of vegetation canopies depend on the geometry of viewing and incident angle, the distribution of polarized reflectance of vegetation canopies is anisotropic and related to the structure of canopies. The polarized reflectance ratio reaches 0. 095, much larger than the previous results. The polarized reflectance factors of vegetation canopies are effectively calculated by the polarized reflectance models, but there will be a large error when for flat-type and smooth blade canopies

关 键 词：遥感 偏振遥感 植被冠层 偏振反射模型 

分 类 号：TP72[自动化与计算机技术—检测技术与自动化装置]