多激光波长在不同稀薄随机分布冰晶粒子层的散射特性
王明军;于记华;刘雁翔;高香香;张华永
【期刊名称】《红外与激光工程》 【年(卷),期】2024(048)003
【摘要】According to laser statistical scattering properties of ice crystal particles with rarefied random distribution,differential scattering section (DSS) of ice spheres with exponential distribution,lognormal distribution,Gamma distribution changed with scattering angles were calculated
numerically
and
analyzed
at
0.65,1.31
and
1.55
μm,respectively.The results show the change of incident laser wavelength has a certain effect on DSS of ice-crystal layer.And DSS of ice spheres with exponential distribution is the largest,which is several orders of magnitude larger than the other two distributions.So different laser wavelength and size distribution models of ice particles have great influence on laser scattering properties of rarefied random distributed ice crystal particles.The works in this paper are based on the foundation for further study development of the effect of ice-crystals cloud on the laser propagation properties in the ground-air links.%依据稀薄随机分布冰晶粒子的激光散射特性,当球形冰晶粒子分别服从指数、对数正态、Gamma三种不同分布时,数值计算并分析了0.65、1.31、1.55 μm激光入射下不同稀薄随机冰晶粒子层的微分散射截面随散射角的变化关系.结果表明:入射激光波长的改变对冰晶粒子层的微分散射截面有一定的影响;当冰晶粒子服从指数分布时稀
多激光波长在不同稀薄随机分布冰晶粒子层的散射特性
