光的地表反射偏振特性分析及空间偏振模式计算方法

Analysis on polarized lights by ground-reflection with calculating its spatial patterns

为研究和分析地表反射偏振特性,及其在空间中形成的大气偏振模式,本文基于单因素大气偏振模型,建立地表反射偏振模式模型,仿真三维空间大气偏振模式,研究地表反射及大气传输衰减对大气偏振模式的影响规律.结果表明水域和建筑对偏振度的影响较大,开阔地和植被的影响较小,大气衰减起到消偏作用,偏振方向保持良好对称性.实验结果符合实际测量数据,为大气偏振模式模型的建立提供理论方法.

To analyze the polarization properties of reflected light by ground and the corresponding skylight polarization pattern based on the model of Individual factor skylight polarization, We establish the polarization pattern model of ground reflection, and simulation the 3D skylight polarization pattern, analyses the influence law of the ground reflection and the atmospheric transmission attenuation on the skylight polarization pattern. The computer simulation results show that, Compared with open land and vegetation cover, water area and building surface has more effect over the degree of polarization. Atmospheric attenuation decreases the degree of polarization, but the polarization direction remains symmetric. It is revealed that the calculated results coincide with the experimental data. This work provides a theoretical method for establish the skylight polarization model.