摘要
直接探测多普勒测风激光雷达通过探测大气后向散射信号的多普勒频移来反演风速。分析了上述后向散射信号在大气能见度和云底高探测上应用的可行性。选择了Klett方法反演大气能见度,并设计了分段计算云底高的流程。根据上述算法编写了反演程序并对激光雷达数据进行处理。与外场观测记录对比,得出了反演结果与目测基本吻合的结论。
The retrieval of wind speed with direct detection Doppler wind lidar is performed by detecting the atmospheric back-scattering signal and computing its Doppler shift.The feasibility of applying atmospheric back-scattering signal in detection of visibility and cloud base height is analyzed.The Klett method is chosen to retrieve atmosphere visibility,and the segmentaion calculation process for cloud base height is proposed.The program based on the algorithm mentioned above is employed to process the lidar data.By comparing with the results in field test,it comes to the conclusion that the test data match the theortical analysis well.
出处
《激光与红外》
CAS
CSCD
北大核心
2010年第8期817-820,共4页
Laser & Infrared
基金
中央高校基金项目(No.ZXH2009B001)资助
关键词
测风激光雷达
民航气象
能见度
云底高
wind lidar
aeronautical meteorology
visibility
cloud base height
