删除或更新信息,请邮件至freekaoyan#163.com(#换成@)

粒子退偏比测量拉曼米-偏振激光雷达系统设计与仿真

本站小编 Free考研考试/2021-12-21

本文二维码信息
二维码(扫一下试试看!)
粒子退偏比测量拉曼米-偏振激光雷达系统设计与仿真
Design and Simulation of Raman-Mie Polarization Lidar System for Particle Depolarization Ratio Measurement
投稿时间:2017-06-29
DOI:10.15918/j.tbit1001-0645.2018.10.017
中文关键词:激光雷达粒子退偏比拉曼信号校正
English Keywords:lidarparticle depolarization ratioRaman signalcorrection
基金项目:国家自然科学基金资助项目(61505009)
作者单位E-mail
陈思颖北京理工大学光电学院, 北京 100081
田依杉北京理工大学光电学院, 北京 100081
陈和北京理工大学光电学院, 北京 100081shinianshao@gmail.com
张寅超北京理工大学光电学院, 北京 100081
郭磐北京理工大学光电学院, 北京 100081
摘要点击次数:821
全文下载次数:349
中文摘要:
针对米-偏振激光雷达回波信号受大气分子信号影响而只能测得体退偏比的问题,设计了一种可以测量粒子退偏比的纯转动拉曼-米偏振激光雷达。仿真了其回波信号与信噪比,结果表明系统夜晚最大探测距离可达12 km,验证了系统的可行性。利用拉曼信号校正米-偏振信号得到气溶胶和云的粒子退偏比,通过对比不同天气状况下的退偏比廓线,得出该系统更适用于高空卷云和浓度较小但退偏比较大的气溶胶粒子的退偏比测量。
English Summary:
In order to solve the influence of atmospheric molecular signal on the echo signal of Mie-polarization lidar, a pure rotational Raman-Mie polarization lidar was designed for particle depolarization ratio measure. The echo signal and the SNR simulation results show that, the maximum detection distance can reach 12 km at night, verifying the feasibility of the system. The particle depolarization ratio profile was calculated by correcting the polarization signal with Raman signal. Comparing the depolarization ratio profiles in different weather conditions, it was found that this system was more suitable for the measurement of high altitude cirrus clouds and aerosol particles with smaller concentration but larger depolarization.
查看全文查看/发表评论下载PDF阅读器
相关话题/北京 北京理工大学 光电 信号 激光