雾对激光的衰减特性研究  

Study of the Attenuation Characteristics of the Laser Transmitting in Fog

作　　者：孙超[1] 王红霞[1] 傅关新[1] 曾震武[1] 

机构地区：[1]第二炮兵工程学院,西安710025

出　　处：《光散射学报》2011年第3期201-205,共5页The Journal of Light Scattering

摘　　要：基于gamma雾滴分布模型以及辐射雾和平流雾粒径分布与能见度的经验关系,计算并分析了不同波长激光在两种雾中的衰减率随能见度的变化,透射率随传输距离的变化。结果表明,不同波长激光在两种雾中传输时,波长较长激光的衰减率都比波长较短激光的衰减率低;10.6μm激光在平流雾中衰减率大于在辐射雾中的衰减率;对不同波长激光在两种雾中传输透射率比较发现,波长较短激光在平流雾中的透射性能较好,波长较长激光在辐射雾中的透射性能较好。Based on gamma fog drop size distribution and the experience relationship between fog drop size distribution and visibility,the attenuation ratio changing with visibility of different wavelength laser transmitting in two types of fog and transmission ratio changing with propagation distance are calculated and analyzed.The results showed that the attenuation ratio of long-wavelength lasers transmitting in both types of fog is lower than the short-wavelength laser.The attenuation rate of 10.6μm laser transmitting in advection fog is higher than in radiation fog.The comparison of the transmission rate of laser transmitting in two types of fog shows that the transmission ratio of short-wavelength laser transmission in advection fog is higher and long-wavelength laser transmission in the radiation fog is higher.

关 键 词：激光 雾 衰减率 透射率 

分 类 号：TN929.12[电子电信—通信与信息系统]