利用辅助平面镜提高扫描振镜式激光雷达作用距离的研究  

Research on Improving the Sensing Range of Scanning LIDAR by Using Auxiliary Flat Mirror

作　　者：黄凯[1] 肖啸[1] 邓迟[1] 曹进[1] HUANG Kai;XIAO Xiao;DENG Chi;CAO Jin(School of Physics and Electronic Engineering,Leshan Normal University,Leshan Sichuan 614000,China)

机构地区：[1]乐山师范学院物理与电子工程学院

出　　处：《乐山师范学院学报》2019年第8期13-16,共4页Journal of Leshan Normal University

基　　金：国家自然科学基金联合基金“基于阵列探测器的卫星激光测距自动跟踪方法研究”(U1631134);四川省教育厅科研项目“于天文观测的激光导引星波前倾斜测量算法研究”(17ZB0192);乐山师范学院人才启动项目“激光导引星波前倾斜量改正方法研究”(Z1518)

摘　　要：受扫描振镜通光孔径的影响,基于扫描振镜的激光雷达的测量距离受到了一定的限制。在回波光路中添加了一块固定平面镜可以有效增加回波光束的通光孔径,增加激光雷达的测量距离。文章理论分析了固定平面镜位置与尺寸对激光雷达扫描角度的影响,实验测量了单独使用扫描振镜和添加固定平面镜两种情况下的激光雷达数据。结果表明,添加固定平面镜的扫描式激光雷达作用距离远长于单独使用扫描振镜时的激光雷达。Due to the influence of the small size aperture of scanning galvanometer,the sensing range of LIDAR based on scanning galvanometer is limited.A fixed plane mirror added into the echo path is able to effectively increase the aperture of the echo beam and the sensing range.In this paper,the influence of fixed plane mirror's position and size on the scanning angle of LIDAR is analyzed theoretically.The LIDAR data are measured using the scanning galvanometer alone and with the fixed plane mirror added.The results show that the scanning LIDAR with fixed plane mirror can measure longer than that with the scanning galvanometer alone.

关 键 词：激光雷达 扫描振镜 激光测距 

分 类 号：TH741[机械工程—光学工程] O439[机械工程—仪器科学与技术]