海面水雾对激光传输的影响分析  

Effect of offing fog on laser transmittance

作　　者：高文静[1] 窦茂森[1] 李金亮[1] 王垒[1] 臧寿洪[1] 

机构地区：[1]中国人民解放军91404部队

出　　处：《激光技术》2011年第5期644-647,共4页Laser Technology

摘　　要：为了研究水雾对激光传输的影响,采用理论分析与设备实测相比对的方法,对水雾的近红外消光特性进行了理论分析和实验验证,取得了海洋环境雾天不同能见度条件下的激光大气传输衰减特性测量数据及同等试验条件下的模拟计算对比数据。结果表明,海洋环境下,水雾是影响激光大气传输的主要因素,其消光系数量级在10^(-1)km^(-1)或10~0km^(-1),水雾对激光传输的衰减是大气分子散射和吸收所引起衰减的十几倍甚至几十倍;结合实测数据对经验常数C进行了修正,得到基于能见度的1.06μm激光在海雾中衰减的经验公式。所得结果对科学评价激光对抗装备远场效能具有参考意义。In order to study the effect of fog on laser transmission, the near-infrared extinction characteristic of fog was analyzed by means of theoretical analysis and experimental measurement. The measurement and simulated data for laser atmosphere transmittance attenuation characteristics were obtained under the same conditions of frog at different visibility. The results show that the fog is the major affecting factor for laser atmosphere transmittance on ocean environment, the extinction coefficient caused by fog is in the order of 10 ^-1km^-1 or 100km^-1 , the attenuation caused by fog is decuple, even several decades times of that caused by the atmosphere molecular scattering and absorption, the extinction caused by fog is more than 85% ratio to the total extinction. The empirical constant C was revised combing the measurement data and the empirical expression of attenuation coefficient at 1.06μm laser was obtained at different visibility. The results play important reference role in scientific evaluation of the efficiency of laser countermeasure equipment.

关 键 词：大气与海洋光学 激光衰减特性 理论分析与实验测量 水雾 消光系数 能见度 透过率 

分 类 号：TN929.12[电子电信—通信与信息系统]