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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。
Based on field and laboratory multi-angle polarization measurement information and the physical mechanism of polarization reflection, the polarization reflection characteristics of different vegetation canopies were analyzed, and the parameters of two surface polarization reflection models were obtained. The results showed that the polarization reflectance of the canopy was related to the incidence and the detection geometry. The polarization reflection of the canopy had obvious anisotropy and was related to the structure of the canopy. The measured reflectance of the canopy canopy Up to 0.095, which is far greater than the previous results. The polarization reflection model can effectively calculate the polarization reflection information of the canopy of the general vegetation, but there is a big error for the canopy of the completely flat type and the smooth leaf.