基于几何光学近似迭代的多重散射波面分析

Wavefront Analysis of Multiple Scattering Based onGeometric Optics Approximation

为了解析环状光在散射媒质中的传播特性,本文提出了以几何光学近似为基础的波面分析法来进行分析。该方法主要以几何光学近似法为工具计算散射粒子的前方散射光,并运用迭代计算的方式实现多重散射模型的波面分析。本文运用该方法计算了散射媒质中的透射率以及环状光在散射媒质中的散射强度波形。计算结果与实验结果一致,散射媒质在特定的距离以及浓度下,环状光的散射波面中心会出现干涉波峰。

To analyze the characteristics of annular beam propagation in random media,we proposed a new wavefront analysis method based on geometric optics approximation.In this algorithm,we adopted a simplified geometric optics approximation and iterative calculation based on forward scattering and simulated the attenuation and the scattering waveform of the annular beam in random media.An interfered peak was obtained at the optical axis with a certain propagation distance and media concentrations,which is consistent with the experimental results.