利用偏振度研究散射介质浓度及杂质比的数值分析

为了研究散射介质的粒子数浓度对散射光偏振度的影响以及杂质混合比与目标偏振度的关系,求解了当激光器输出波长处于近红外波段806 nm时目标的米勒矩阵及偏振度的数值解,结果表明偏振度随散射介质粒子数浓度的变化十分显著;通过建立混合目标模型,讨论了杂质比与偏振度的数值关系,并对目标的偏振度进行了归一化,而且实现了由归一化偏振度对杂质混合比的反演。本文的研究结果为利用散射光偏振度研究大气遥感提供了新的途径。

The Numerical Analysis on the Concentration of the Scattering Medium and the Ratio of the Impurity with the Method of Polarization Degree

In order to research the effects of the concentration of the scattered medium on the polarization degree of the scattered light in near-infrared detection and the relation of the polarization degree of the target and the ratio of the impurity, the numerical results of the Müller matrix and the polarization degree were calculated. The results showed that the concentration of the scattered medium has significant effect on the depolarization degree of the scattered light. And then the numerical relation between the polarization degree of the target and the ratio of the impurity were discussed by building the mixed target model. The normalized polarization degree was obtained in addition. The inversion result of the ratio of the impurity can be obtained from the normalized polarization degree. The result can be applied as a new approach of the atmosphere remote sensing.