雾天环境中激光传输的衰减特性研究  

Research on Attenuation Characteristic of Laser Transmission in Fog Environment

作　　者：王亚民[1] 高国强[1] 

机构地区：[1]西安科技大学通信与信息工程学院,陕西西安710054

出　　处：《光电技术应用》2014年第1期4-8,共5页Electro-Optic Technology Application

基　　金：陕西省自然科学基础研究计划资助项目(2013JM8004)

摘　　要：根据辐射雾和平流雾中含水量和能见度的经验关系,分析了雾天气对激光大气传输衰减的计算公式,并对三种常用的雾衰减经验模型进行Matlab数值仿真,得出了激光衰减系数和雾天气能见度的关系。最后,针对三种半经验模型所存在的缺陷,通过Mie散射理论提出了一种包含测量距离、接收器视场角等信息的新的经验公式。According to the empirical relationship between the water content and visibility in radiation and ad-vection fog, the calculation formula of laser atmosphere transmission attenuation in fog weather is analyzed. Three kinds of commonly used fog attenuation empirical models are simulated by Matlab numerical value. The relation-ship between laser attenuation coefficient and visibility in fog weather is obtained. According to the shortcomings of three kinds of semi-empirical models, a new empirical formula containing some information such as measuring dis-tance and field of view of a receiver is proposed based on Mie scattering theory finally.

关 键 词：激光 能见度 Matalb仿真 雾 

分 类 号：TN929.12[电子电信—通信与信息系统]