Rayleigh Doppler Lidar for Higher Tropospheric and Stratospheric Wind Observation  

作　　者：TANG Lei WANG Cong-Rong WU Hai-Bin DONG Ji-Hui 唐磊;王从戎;吴海滨;董吉辉(Department of Physics and Engineering,Hefei Normal University,Hefei 230031;Key Laboratory of Atmospheric Composition and Optical Radiation,Chinese Academy of Sciences,Hefei 230031)

机构地区：[1]Department of Physics and Engineering,Hefei Normal University,Hefei 230031 [2]Key Laboratory of Atmospheric Composition and Optical Radiation,Chinese Academy of Sciences,Hefei 230031

出　　处：《Chinese Physics Letters》2012年第1期156-159,共4页中国物理快报（英文版）

基　　金：Supported by the National High-Tech Research and Development Program of China,and Key Laboratory of Geodesy Environment and Geodesy Ministry of Education(L08-3).

摘　　要：A mobile molecular Doppler wind lidar (DWL) based on the double-edge technique is described for wind measurement from 10 km to 40 km altitude.Two edge filters located in the wings of the thermally broadened molecular backscattered signal spectrum at 355 nm are employed as a frequency discriminator to determine the Doppler shift proportional to the wind velocity.The lidar operates at 355 nm with a 45 cm aperture telescope and a matching azimuth-over-elevation scanner that can provide full hemispherical pointing.Intercomparison experiments of the lidar wind profile measurement are performed with collocated pilot balloon.The results show that the standard deviation of wind speed and direction are less than 10m/s and 30° in the 5-40 km altitude range,respectively.The small mean difference and normal distribution between DWL and pilot balloon data and the transient eddy of the west-wind jet observed demonstrate that the DWL consistently measures the wind with acceptable random errors.

关 键 词：lidar ALTITUDE DOPPLER 

分 类 号：TN9[电子电信—信息与通信工程]