| 一种少光子高精度多波束激光雷达系统及验证 |
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| 引用本文： | 刘鸿彬,李铭,王凤香,黄庚华,胡以华.一种少光子高精度多波束激光雷达系统及验证[J].红外与毫米波学报,2019,38(4):535-541. |
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| 作者姓名： | 刘鸿彬 李铭 王凤香 黄庚华 胡以华 |
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| 作者单位： | 中国科学院上海技术物理研究所空间主动光电技术重点实验室,上海200083;中国科学院大学,北京100049;中国科学院上海技术物理研究所空间主动光电技术重点实验室,上海200083;中国科学院上海技术物理研究所空间主动光电技术重点实验室,上海200083;脉冲功率激光技术国家重点实验室,安徽合肥230037 |
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| 基金项目： | 量子雷达探测新技术项目量子雷达探测新技术项目 |
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| 摘 要： | 介绍了一种基于8×8面阵SiPM（Silicon photomultiplier）的少光子高精度多波束三维成像激光雷达系统，并给出了激光测距的理论计算以及系统设计。从64波束线阵激光并行发射出发，采用线阵转面阵光纤的排布技术实现激光发射与探测器接收配准。设计了离轴三反的光学收发系统、超窄带滤波结构以及64通道高速并行读出电路，并搭建了激光雷达样机。实验结果表示，静态21 m测距下，64通道一致性较好，测距精度均达到1 cm，最大距离偏差为6 cm；三维成像中，分辨率达到512×512，成像时间100 ms，能够分辨15 cm不同目标，平面点云厚度为5 cm。
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| 关 键 词： | 激光雷达 多波束 少光子 高精度 三维成像 |
| 收稿时间： | 2018/11/15 0:00:00 |
| 修稿时间： | 2019/5/28 0:00:00 |
A high accuracy multi-beam Lidar system and its verification on several photons |
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| LIU Hong-Bin,LI Ming,WANG Feng-Xiang,HUANG Geng-Hua and HU Yi-Hua.A high accuracy multi-beam Lidar system and its verification on several photons[J].Journal of Infrared and Millimeter Waves,2019,38(4):535-541. |
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| Authors: | LIU Hong-Bin LI Ming WANG Feng-Xiang HUANG Geng-Hua and HU Yi-Hua |
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| Affiliation: | Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences,Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China,Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China,Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China and Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;State Key Laboratory of Pulsed Power Laser Technology, Hefei 230037, China |
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| Abstract: | A several photons high accuracy multi-beam three-dimensional imaging Lidar system based on 8×8 array SiPM (Silicon photomultiplier) was introduced. The theoretical calculation and system design of laser ranging were given. According to the 64 laser beam transmitted in parallel, fiber array was used to realize the alignment of laser beam and detector. The off-axis three-mirror optical transceiver system, ultra-narrowband filter structure and 64-channel high-speed parallel readout circuit were designed, and a prototype of Lidar was built. Experimental verification result indicates that 64 channels are in good uniformity under static 21 m ranging, ranging accuracy is 1 cm and maximum distance deviation is 6 cm. In three-dimensional, imaging resolution is 512×512, imaging time is 100ms, different targets of 15 cm can be distinguished, and the thickness of plane is 5 cm. |
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| Keywords: | Lidar multi-beam several photons high accuracy three dimensional imaging |
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