Mobile Rayleigh Doppler wind lidar based on double-edge technique

查看全文 作　　者：[1]唐磊;[1]舒志峰;[1]董吉辉;[1]王国成;[2]汪永涛;[1]徐文静;[1]胡冬冬;[3]陈廷娣;[3]窦贤康;[3]孙东松;Hyunki [4]Cha

机构地区：[1]Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences;[2]Computer Department,Anhui Finance and Trade Vocational College;[3]School of Earth and Space Sciences,University of Science and Technology of China;[4]Korea Atomic Energy Research Institute

出　　处：《Chinese Optics Letters》索引2010年第8卷第8期,共6页

基　　金：supported by the National'863'Project of China and the International Cooperative Project of Anhui Province(No.09080703032) 摘　　要：We describe a mobile molecular Doppler wind lidar(DWL) based on double-edge technique for wind measurement of altitudes ranging from 10 to 40 km.A triple Fabry-Perot etalon is 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 provides full hemispherical pointing.To guarantee wind accuracy,a single servo loop is used to monitor the outgoing laser frequency to remove inaccuracies due to the frequency drift of the laser or the etalon.The standard deviation of the outgoing laser frequency drift is 6.18 MHz and the corresponding velocity error is 1.11 m/s.The wind profiles measured by the DWL are in good agreement with the results of the wind profile radar(WPR).Evaluation is achieved by comparing at altitudes from 2 to 8 km.The relative error of horizontal wind speed is from 0.8 to 1.8 m/s in the compared ranges.The wind accuracy is less than 6 m/s at 40 km and 3 m/s at 10 km. 关键词：多普勒频移激光雷达边缘技术移动测风基础瑞利频率漂移

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Mobile Rayleigh Doppler wind lidar based on double-edge technique

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