摘要
介绍了直接探测多普勒激光雷达的系统结构和主要参数,给出了该系统进行大气风场测量的光束扫描方法,详细推导了三维风场的计算公式,给出了其风速和风向误差的求解方法。在径向风速均为1m/s和扫描角度误差均为1°的情况下,水平风速和风向的误差分别为1.155m/s和0.707°。给出了合肥地区对流层风场的测量结果,结果表明,采用该方法测量大气风场是切实可行的。
The structure and primary parameters of direct-detection Doppler lidar are described. The beam scanning method of atmospheric wind measurement is given,and computing formula of the three dimension wind filed is derived. The solution method of errors of wind velocity and wind direction is presented. Errors of LOS velocity and scanning angle of there directions are 1 m/s and 1°,the errors of horizontal wind velocity and wind direction are 1.155 m/s and 0.707°,respectively. Results of troposphere wind field measurement are given. It indicates the method of wind field measurement is feasible.
出处
《红外与激光工程》
EI
CSCD
北大核心
2007年第1期69-72,共4页
Infrared and Laser Engineering
基金
中国科学院知识创新工程资助项目(CX0201)
