【摘要】 根据激光雷达原理并结合实际实验经验,设计了一套在计算机程序控制下的激光雷达光束自动准直系统。通过控制激光发射导向镜的位置,使激光在东西和南北方向扫描,对接收到的回波信号分析处理,得到最后方位使收发系统平行。操作过程每次只需10～20 min,精度可达到0.1 mrad。系统应用到大气温度监测中,将测量计算结果与模式CIRA86数据进行对比分析表明,反演高度30～45 km处误差1～3 K,45～65 km处误差2～5 K。更多还原

【Abstract】 According to principle of lidar and experiences, the automatic alignment system of lidar beam controlled by computer procedure has been designed. By controlling the position of gimbal-mounted mirror, the direction of light beam scanning was east-west and south-north. Echo signals were analyzed, and final position was obtained to make transmitting and receiving systems parallel. The process needs 10～20 min for once, and accuracy is about 0.1 mrad. In atmospheric temperture monitoring, measuring results compared with CIRA86data. The error of altitude at 30～45 km is 1～3 K, 2～5 K for 45～65 km.更多还原