双振镜直接探测高精度三维成像激光雷达系统实验研究  

Experimental Study on Dual-Mirror Direct Detection of High-Precision 3D Imaging LiDAR System

作　　者：王琪 李琳 郝鹏飞 王超 王春晖[2] 郭灏 HAO Pengfei;WANG Qi;LI Lin

机构地区：[1]航天系统部装备部驻长春地区军事代表室,长春130033 [2]哈尔滨工业大学,哈尔滨150001 [3]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《科技创新与应用》2024年第7期13-16,共4页Technology Innovation and Application

摘　　要：建立一个高精度实时三维成像激光雷达系统,该系统采用恒比定时器(CFD)来判别到达时间;通过时间-数字转换(TDC)测量激光雷达与目标之间的激光脉冲飞行时间,然后将飞行时间(TOF)反演为距离信息;结合二维扫描空间坐标,得到目标的三维距离信息。在100 m范围内对不同的非协同目标进行实验测量,并给出实验结果。在该系统中,时间测量误差为300 ps,而测距精度为45 mm。A high-precision real-time 3D imaging LiDAR system is built,in which a constant-fraction discriminator(CFD) is employed to discriminate the arrival time;the laser pulse's flight of time between the LiDAR and target is measured by time-todigital conversion(TDC),and thereafter the time of flight(TOF) is inversed into distance information;combining with 2D spatial coordinates of scanning,the 3D range information of target are obtained.The experimental measurements are carried out on different non-cooperative targets within 100 m,and the experimental results are also given.In this system,the time measurement error is 300 ps,while the ranging accuracy is 45 mm.

关 键 词：三维激光雷达系统 恒比定时器 时间-数字转换 双振镜 直接探测 

分 类 号：TN958.98[电子电信—信号与信息处理]