Towards an ultrafast 3D imaging scanning LiDAR system:a review  

作　　者：ZHI LI YAQI HAN LICAN WU ZIHAN ZANG MAOLIN DAI SZE YUN SET SHINJI YAMASHITA QIAN LI H.Y.FU 

机构地区：[1]Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China [2]Department of Electrical Engineering and Information Systems,The University of Tokyo,Tokyo 113-8656,Japan [3]Research Center for Advanced Science and Technology,The University of Tokyo,Tokyo 153-8904,Japan [4]School of Electronic and Computer Engineering,Peking University,Shenzhen 518055,China

出　　处：《Photonics Research》2024年第8期1709-1729,共21页光子学研究（英文版）

基　　金：Tsinghua Shenzhen International Graduate School-Shenzhen Pengrui Young Faculty Program of Shenzhen Pengrui Foundation(SZPR2023008);Shenzhen Technology and Innovation Council(WDZC20200820160650001)。

摘　　要：Light detection and ranging(LiDAR),as a hot imaging technology in both industry and academia,has undergone rapid innovation and evolution.The current mainstream direction is towards system miniaturization and integration.There are many metrics that can be used to evaluate the performance of a LiDAR system,such as lateral resolution,ranging accuracy,stability,size,and price.Until recently,with the continuous enrichment of LiDAR application scenarios,the pursuit of imaging speed has attracted tremendous research interest.Particularly,for autonomous vehicles running on motorways or industrial automation applications,the imaging speed of LiDAR systems is a critical bottleneck.In this review,we will focus on discussing the upper speed limit of the LiDAR system.Based on the working mechanism,the limitation of optical parts on the maximum imaging speed is analyzed.The beam scanner has the greatest impact on imaging speed.We provide the working principle of current popular beam scanners used in LiDAR systems and summarize the main constraints on the scanning speed.Especially,we highlight the spectral scanning LiDAR as a new paradigm of ultrafast LiDAR.Additionally,to further improve the imaging speed,we then review the parallel detection methods,which include multiple-detector schemes and multiplexing technologies.Furthermore,we summarize the LiDAR systems with the fastest point acquisition rate reported nowadays.In the outlook,we address the current technical challenges for ultrafast LiDAR systems from different aspects and give a brief analysis of the feasibility of different approaches.

关 键 词：LIDAR SCANNER SYSTEM 

分 类 号：TN958.98[电子电信—信号与信息处理]