外文题目: ALL-FIBER AIRBORNE COHERENT DOPPLER LIDAR TO MEASURE WIND PROFILES
作者: Liu, Jiqiao; Zhu, Xiaopeng; Diao, Weifeng; Zhang, Xin; Liu, Yuan; Bi, Decang; Jiang, Liyuan; Shi, Wei; Zhu, Xiaolei; Chen, Weibiao
刊名: EPJ WEB CONF
来源图书: 27TH INTERNATIONAL LASER RADAR CONFERENCE (ILRC 27)
年: 2016 卷: 119 文章编号：UNSP 10002
会议名称: 27th International Laser Radar Conference (ILRC)
英文关键词:

LASER; SYSTEM
英文摘要:
An all-fiber airborne pulsed coherent Doppler lidar (CDL) prototype at 1.54 mu m is developed to measure wind profiles in the lower troposphere layer. The all-fiber single frequency pulsed laser is operated with pulse energy of 300 mu J, pulse width of 400ns and pulse repetition rate of 10kHz. To the best of our knowledge, it is the highest pulse energy of all-fiber eye-safe single frequency laser that is used in airborne coherent wind lidar. The telescope optical diameter of monostatic lidar is 100 mm. Velocity-Azimuth-Display (VAD) scanning is implemented with 20 degrees elevation angle in 8 different azimuths. Real-time signal processing board is developed to acquire and process the heterodyne mixing signal with 10000 pulses spectra accumulated every second. Wind profiles are obtained every 20 seconds. Several experiments are implemented to evaluate the performance of the lidar. We have carried out airborne wind lidar experiments successfully, and the wind profiles are compared with aerological theodolite and ground based wind lidar. Wind speed standard error of less than 0.4m/s is shown between airborne wind lidar and balloon aerological theodolite.


文献类型: 期刊论文
正文语种: English
收录类别: ISTP
DOI: 10.1051/epjconf/201611910002


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