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汽车安全与节能学报 ›› 2026, Vol. 17 ›› Issue (3): 279-295.DOI: 10.3969/j.issn.1674-8484.2026.03.001

• 综述与展望 •    下一篇

激光SLAM方法综述

刘凯琪1(), 康福祥1, 李伟1, 高博麟2   

  1. 1 北京理工大学 信息与电子学院北京 100081, 中国
    2 清华大学 智能绿色车辆与交通全国重点实验室北京 100084, 中国
  • 收稿日期:2025-09-25 修回日期:2026-04-24 出版日期:2026-06-30 发布日期:2026-07-02
  • 作者简介:刘凯琪(1991—),女(汉),山西,副教授。E-mail:liukaiqi@bit.edu.cn。北京理工大学信息与电子学院长聘副教授、博士生导师。长期从事自动驾驶环境感知、激光雷达三维点云处理、目标检测与识别、激光雷达/高光谱/电磁多维度信号处理等方向基础理论方法及工程应用研究,主持国家自然科学基金面上/青年基金项目、国家实验室项目、全国重点实验室基金等国家级/省部级项目 10 余项,入选北京市青年人才托举工程。发表 SCI 等高水平论文 20 余篇,授权/受理发明专利 10 余项。研究成果发表于 IEEE Transactions on Pattern Analysis and Machine Intelligence、IEEE Transactions on Image Processing、IEEE Transactions on Geoscience and Remote Sensing、IEEE Transactions on Intelligent Transportation Systems等国际高水平期刊,以及 IEEE 计算机视觉与模式识别会议(IEEE Conference on Computer Vision and Pattern Recognition, CVPR)、欧洲计算机视觉会议(European Conference on Computer Vision, ECCV)、IEEE 智能交通系统国际会议(IEEE International Conference on Intelligent Transportation Systems,ITSC)等重要学术会议,部分成果入选 ESI 高被引论文。
    Assoc. Prof. LIU Kaiqi, She is an associate professor and doctoral supervisor at the School of Information and Electronics, Beijing Institute of Technology. Her research focuses on the fundamental theories, methodologies, and engineering applications of autonomous driving environment perception, 3D LiDAR point cloud processing, object detection and recognition, and multi-dimensional signal processing with LiDAR, hyperspectral, and electromagnetic data. She has presided over more than ten national- and provincial-/ministerial-level research projects, including grants from the General Program and Young Scientists Fund of the National Natural Science Foundation of China, national laboratory projects, and national key laboratory funds. She was selected for the Young Elite Scientists Sponsorship Program of the Beijing High Innovation Plan. She has published more than 20 papers in SCI-indexed and other high-impact journals and has more than 10 authorized or filed invention patents. Her work has appeared in leading international journals, including IEEE Transactions on Pattern Analysis and Machine Intelligence, IEEE Transactions on Image Processing, IEEE Transactions on Geoscience and Remote Sensing, and IEEE Transactions on Intelligent Transportation Systems, as well as in major conferences such as IEEE Conference on Computer Vision and Pattern Recognition (CVPR), European Conference on Computer Vision (ECCV), and IEEE International Conference on Intelligent Transportation Systems (ITSC). Some of her papers have been recognized as ESI highly cited papers.
  • 基金资助:
    智能绿色车辆与交通全国重点实验室开放基金课题(KFY2416);国家自然科学基金面上项目(62576039)

Review of LiDAR-based SLAM methods

LIU Kaiqi1(), KANG Fuxiang1, LI Wei1, GAO Bolin2   

  1. 1 School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China
    2 State Key Laboratory of Intelligent Green Vehicle and Mobility, Tsinghua University, Beijing 100084, China
  • Received:2025-09-25 Revised:2026-04-24 Online:2026-06-30 Published:2026-07-02

摘要:

激光同时定位与地图构建(SLAM)作为机器人导航与环境感知的核心技术,已经广泛应用于自动驾驶、无人机、移动机器人等领域。该文概述了激光SLAM的基本框架与关键技术,重点介绍激光雷达的点云处理、前端数据配准、后端优化以及闭环检测步骤。梳理了经典的激光SLAM方法及对应的优化方法,讨论了其中的技术创新之处,揭示了激光SLAM技术由单一传感器驱动向多传感器融合、由传统几何约束向语义理解增强、由局部位姿估计向全局一致性优化不断发展的技术脉络与研究趋势。同时,开展了基于Livox HAP激光雷达的室内场景三维建图实验,验证了SLAM构建的高精度地图对环境感知任务的有效支撑。实验结果表明,基于激光SLAM获得的点云地图不仅能够较为准确地还原场景的空间结构,还能够为后续语义分割等任务提供可靠的数据基础,体现出激光SLAM在感知系统中的重要应用价值。最后,展望了激光SLAM在深度学习、神经辐射场和多传感器融合等方向的发展潜力,并指出其在动态环境适应、实时性与精度平衡以及系统工程化部署等方面仍面临挑战。

关键词: 激光点云, 激光同时定位与地图构建(SLAM), 前端扫描匹配, 后端优化, 闭环检测, 地图构建

Abstract:

As the core technology of robot navigation and environment perception, LiDAR-based simultaneous localization and mapping (SLAM) technology has been widely used in the fields of autonomous driving, drones, robots and so on. This paper summarizes the basic framework and key technologies of LiDAR-based SLAM, and focuses on the point cloud processing, front-end data registration, back-end optimization and closed-loop detection steps of LiDAR. It further reviews classical LiDAR-based SLAM methods and their corresponding improvements, discusses their technical innovations, and reveals the developmental trajectory and research trends of LiDAR-based SLAM, namely the transition from single-sensor-driven systems to multi-sensor fusion, from traditional geometric constraints to enhanced semantic understanding, and from local pose estimation to global consistency optimization. Meanwhile, an indoor 3D mapping experiment was conducted using a Livox HAP LiDAR to validate the effective support of high-precision maps constructed by SLAM for environmental perception tasks. Experimental results show that point cloud maps obtained through LiDAR-based SLAM can not only reconstruct the spatial structure of a scene with relatively high accuracy, but also provide a reliable data foundation for downstream tasks such as semantic segmentation, thereby demonstrating the significant application value of LiDAR-based SLAM in perception systems. Finally, the paper discusses the development potential of LiDAR-based SLAM in directions such as deep learning, neural radiance fields, and multi-sensor fusion, and points out that challenges remain in dynamic environment adaptation, the trade-off between real-time performance and accuracy, and large-scale engineering deployment.

Key words: LiDAR point cloud, LiDAR-based simultaneous localization and mapping (SLAM), frontend scan matching, backend optimization, loop closure detection, map construction

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