摘要
介绍了基于相干探测方式的多普勒激光测风雷达的基本组成结构和原理,着重对激光测风雷达的信号处理系统进行了研究。文中给出了信号处理系统中所采用的多普勒信号处理方法,对采集到的多普勒回波信号进行了仿真研究。采用商业数据采集卡和LABVIEW软件,设计了相干激光测风雷达信号处理系统,并通过搭建的平台实现了激光视向风速的测量。通过模拟的多普勒回波信号,对信号处理系统进行了测试验证,实验结果证明了该信号处理系统能够达到0.8 m/s的速度测量精度。
The composition and principle of a coherent Doppler wind LIDAR are presented, especially the signal processing system. The method of Doppler signal processing is introduced ; Doppler echo signal is simulated and studied.The signal processing system of the coherent Doppler wind LIDAR is designed by using commercial data acquisition card and LABVIEW software. The measurement of radial velocity is obtained through a special platform. The analog signal of Doppler echo is designed, which is used to test the signal processing system. The results indicate that the accuracy of velocity measurement is up to O. 8m/s.
出处
《激光与红外》
CAS
CSCD
北大核心
2013年第10期1113-1116,共4页
Laser & Infrared
