Mie散射大气激光雷达回波信号消光系数边界值估算  

Estimation of Extinction Efficient Boundary Value for Mie Lidar Return Signal

作　　者：贺应红[1] 郑玉臣[2] 程娟[1] 左浩毅[1] 杨经国[1] 

机构地区：[1]四川大学物理系,成都610064 [2]香港城市大学物理及材料科学系

出　　处：《光散射学报》2004年第2期149-152,共4页The Journal of Light Scattering

基　　金：国家自然科学基金资助(编号:60078020);国防科技重点实验室基金资助(编号:00JS75.3.1.JW1906)

摘　　要：报道了一种使用最小二乘法拟合大气激光雷达回波信号,计算消光系数边界值的算法。无云层天气条件下,利用最小二乘法对回波信号全程拟合获得大气消光系数边界值;有云层天气下,先将激光雷达信号在大气中的传输光路分段为云层区和非云层区,忽略回波信号中的云层信息,假设非云层区大气近似均匀,利用最小二乘法拟合获得大气消光系数边界值。A new type of method for estimating extinction efficient boundary values with least square fitting for inversion of slant angle Lidar measurement is reported. In cloudless weather, the boundary values of extinction is calculated by fitting Lidar return signal. For cloudy weather, firstly, the measured region is divided into cloudy and cloudless section. Then it is assumed that the cloudless region is homogenous circumstance. The boundary values of extinction is calculated by fitting Lidar return signal except the cloudy region.

关 键 词：大气激光雷达 消光系数边界值 大气消光系数 最小二乘法拟合 

分 类 号：O436.2[机械工程—光学工程] TN958.98[理学—光学]