基于光线追迹法的球形大粒子的多次散射计算  

Multiple-scatter Calculation of Large Spherical Particle Based on Ray-tracing Method

作　　者：尹红伟[1] 张海良[1] 贾红辉[1] 罗剑峰[1] 

机构地区：[1]国防科技大学,湖南长沙410073

出　　处：《大学物理实验》2012年第4期1-2,28,共3页Physical Experiment of College

摘　　要：基于光线追迹法模拟了球形大粒子的多次散射过程,利用菲涅耳公式建立了散射矩阵的理论表达式,并利用Matlab对计算过程进行编程。以水滴为例进行了定量计算,获得了散射功率随散射次数和散射角的分布。相关结论可用于光学大气传输的定量计算。The multiple-scatter process of large spherical particle is simulated based on ray-tracing method,the scattering matrix is set up based Fresnel equations, and the computer code is made based on Matlab. The quantitative calculation of water drop is made with the code, and the scattering power versus the scattering time and the cosine of the scattering angle are obtained. Such conclusions can be made use of for the calculation of atmospheric optical propagation.

关 键 词：光线追迹法 球形大粒子 多次散射 散射矩阵 

分 类 号：O436.2[机械工程—光学工程]