雨滴前向散射对光传输影响的研究  

Study of Forward Scattering Effections on Laser Transformation in Raindrop

作　　者：栗伟珉[1] 敖发良[1] 于胜云[1] 

机构地区：[1]桂林电子科技大学通信与信息工程系,桂林541004

出　　处：《光子技术》2006年第4期237-240,共4页Photon Technology

基　　金：国防预研项目(D200109)

摘　　要：利用Mie理论和M-P雨滴谱分布,分析了粒子尺度及不同波长对消光效率因子的影响,详细推导了光波在雨中衰减的计算公式,得到了衰减与降雨率之间的确定关系,介绍了前向散射修正系数,分析了雨滴的前向散射对532nm波长光信号传播的影响,得到了经过前向散射修正后的衰减计算公式。Based on Mie theory and M-P particle size spectral distribution function, it analys effections on scattering efficiency paramater by different particle scale and different wave-lengths. It deduces particularly formula of rain attenuation, gets a certain relation between rain attenuation and rainfall rate, introduces the forward scattering coefficient,analys forward scattering effections on 532um laser propagation by raindrop,and gets a new formula that have been rectified.

关 键 词：MIE理论 M-P雨滴谱 雨衰减 前向散射修正 

分 类 号：TN929.12[电子电信—通信与信息系统]