结构介质 meaning in Chinese

structured media

The main works and results are as follows : 1 . by use of one order multiple scattering theory , light scattering and reflection by a single coating layer is analyzed . the variance of radiation intensity , bidirectional reflection distribution function ( brdf ) and laser radar scattering cross section with coating layer parameters is given , with the effect of rough contrast on bidirectional reflection distribution function
本文主要研究了单层和多层涂层结构介质的光散射特性，以及近场条件下复杂目标对激光波束的散射，其主要工作如下： 1 、采用一阶多重散射近似理论分析单层涂层对光波的散射和反射，计算并讨论了辐射强度、双向反射分布函数和单位面积激光雷达散射截面随涂层结构参数的变化规律，数值分析了粗糙基底对双向反射分布函数的影响。