【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。更多还原

【Abstract】 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.更多还原