激光雷达观测北京大气气溶胶的垂直分布

利用激光雷达对北京2005年4月26—30日大气气溶胶进行了连续观测,对气溶胶光学特性进行了测量和分析,讨论了大气污染物气溶胶和沙尘气溶胶的垂直分布,以及沙尘气溶胶的传输和沉降过程。因此,激光雷达是研究阴霾天气和沙尘天气特征的有效手段。     

激光雷达遥感进展

本文综述激光雷达在遥感方面的发展,分别介绍各种激光雷达的基本原理,并指出今后激光雷达的发展方向.     

激光雷达观测2005年春季北京沙尘天气

利用激光雷达对2005年春季北京地区沙尘天气进行了连续观测,表征了沙尘气溶胶的时空分布以及沙尘天气特征。2月至5月间北京共发生沙尘天气26次,其中强沙尘天气12次。井将激光雷达观测结果和GT-521光学粒子计数器的测定结果进行了对比。     

相干激光雷达方程的推导

本文利用推广的夫琅和费—菲涅耳衍射公式,导出相干激光雷达信噪比(SNR)的基本方程。     

光子探测器响应DTC[nr(r)]校准方法及应用

介绍了光子计数器的结构、工作原理并对其进行了响应校准。讨论了光子计数器在小型米散射激光雷达信号探测系统中的应用。     

Exploring the atmosphere with lidars

Lidar is a powerful technique for the study of atmospheric structure and dynamics. The spatial and temporal variability of minor constituents of the atmosphere such as aerosols, dusts, clouds, water vapour, and wind speed and temperature structure of the upper atmosphere can be studied using lidar. This article describes the basic principle of lidar operation, types of laser used for the remote sensing of the atmosphere and mechanism of scattering/absorption processes when the laser interacts with the atmosphere. Part 1 gives the basics and applications of lidar. Also, one type of lidar—Mie and Rayleigh lidar is described. S Veerabuthiran is working as a research fellow in Space Physics Laboratory, Vikram Sarabhai Space Centre, Trivandrum. His research involves the study of aerosols, dusts, and clouds in the lower atmosphere and temperature structure in the upper atmosphere.