基于1064nm米散射激光雷达的大气消光特性的研究

Study about atmosphere extinction coefficient based on 1064nm Mie-scattering lidar

摘要: 介绍了一台自行研制的1064nm微脉冲米散射激光雷达的总体结构、技术参数及其工作原理。给出了具体探测的实验结果,推算出系统的几何重叠因子,根据激光雷达方程的反演方法,得出了大气气溶胶消光系数随高度变化的垂直分布廓线图。该激光雷达系统在夜晚的探测高度可达5km左右。通过激光雷达系统的日夜连续监测,可得到消光系数随高度及时间变化的三维分布图,对于进一步研究大气气溶胶的浓度、分布、散射及吸收特性都具有重要的意义。

Abstract: The system structure,the theory and the technical parameters for a 1064nm Mie-scattering micropulse lidar are presented.Based on the experimental results,the overlap factor of the system and retrieve the profile of the atmosphere aerosol extinction coefficient can be deduced.Signals can be detected by the lidar system about 5km far away at night.The 3-D profile of the extinction varied with altitude and time can be received by lidar's day and night surveying,which helps to study the thickness,distribution,scatter and absoption of the atmospheric aerosol.