All fiber pulsed coherent lidar development for wind profiles measurements in boundary layers  

作　　者：刁伟峰 张鑫 刘继桥 竹孝鹏 刘源 毕徳仓 陈卫标 

机构地区：[1]Key laboratory of Space Laser communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences [2]University of Chinese Academy of Science

出　　处：《Chinese Optics Letters》2014年第7期71-74,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant No.60908036

摘　　要：An all fiber pulsed coherent Doppler lidar （CDL） system at 1.54 μm wavelength is developed for wind profiles measurements. This lidar affords 43.0-μJ pulse energy at 10-kHz pulse repetition frequency with 500-ns pulse width. The lidar is operated in monostatic mode with 50-mm diameter telescope. The heterodyne mixing signals are acquired with 500 M/s analog to digital converter and 2048 points fast Fourier transform （FFT） is implemented. Line of sight wind speeds are measured with more than 3.0-km range in a horizontal direction and about 1.9 km in the vertical direction with 75-m range resolution. Systematic error of speed measurement of 0.2 m/s is validated.An all fiber pulsed coherent Doppler lidar （CDL） system at 1.54 μm wavelength is developed for wind profiles measurements. This lidar affords 43.0-μJ pulse energy at 10-kHz pulse repetition frequency with 500-ns pulse width. The lidar is operated in monostatic mode with 50-mm diameter telescope. The heterodyne mixing signals are acquired with 500 M/s analog to digital converter and 2048 points fast Fourier transform （FFT） is implemented. Line of sight wind speeds are measured with more than 3.0-km range in a horizontal direction and about 1.9 km in the vertical direction with 75-m range resolution. Systematic error of speed measurement of 0.2 m/s is validated.

关 键 词：Analog to digital conversion Fast Fourier transforms 

分 类 号：TN958.98[电子电信—信号与信息处理] TN958.2[电子电信—信息与通信工程]