A high accuracy multi-beam Lidar system and its verification on several photons
Received:November 15, 2018  Revised:May 28, 2019  download
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Author NameAffiliationE-mail
LIU Hong-Bin Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
University of Chinese Academy of Sciences, Beijing 100049, China 
mufengliuhb@163.com 
LI Ming Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China lpfilter@163.com 
WANG Feng-Xiang Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China  
HUANG Geng-Hua Key Laboratory of Space Active Electro-Optical Technology and System, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China  
HU Yi-Hua 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 
 
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.
keywords:Lidar  multi-beam  several photons  high accuracy  three dimensional imaging
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