{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,18]],"date-time":"2026-01-18T10:01:36Z","timestamp":1768730496912,"version":"3.49.0"},"reference-count":34,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2023,3,26]],"date-time":"2023-03-26T00:00:00Z","timestamp":1679788800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["51975468"],"award-info":[{"award-number":["51975468"]}]},{"name":"National Natural Science Foundation of China","award":["50674075"],"award-info":[{"award-number":["50674075"]}]},{"name":"National Natural Science Foundation of China","award":["2023-JC-YB-331"],"award-info":[{"award-number":["2023-JC-YB-331"]}]},{"name":"Natural Science Basic Research Program of Shaanxi, China","award":["51975468"],"award-info":[{"award-number":["51975468"]}]},{"name":"Natural Science Basic Research Program of Shaanxi, China","award":["50674075"],"award-info":[{"award-number":["50674075"]}]},{"name":"Natural Science Basic Research Program of Shaanxi, China","award":["2023-JC-YB-331"],"award-info":[{"award-number":["2023-JC-YB-331"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Point cloud registration is the basis of real-time environment perception for robots using 3D LiDAR and is also the key to robust simultaneous localization and mapping (SLAM) for robots. Because LiDAR point clouds are characterized by local sparseness and motion distortion, the point cloud features of coal mine roadway environments show a weak texture and degradation. Therefore, for these environments, the traditional point cloud registration method to register directly will lead to problems, such as a decline in registration accuracy, z-axis drift, and map ghosting. To solve the above problems, we propose a point cloud registration method based on IMU preintegration with the sensor characteristics of LiDAR and IMU. The system framework of this method mainly consists of four modules: IMU preintegration, point cloud preprocessing, point cloud frame matching and point cloud registration. First, IMU sensor data are introduced, and IMU linear interpolation is used to correct the motion distortion in LiDAR scanning, and the IMU preintegration error function is constructed. Second, the point cloud segmentation is performed using the ground segmentation method of RANSAC to provide additional ground constraints for the z-axis displacement and to remove the unstable flawed points from the point cloud. On this basis, the LiDAR point cloud registration error function is constructed by extracting the feature corner points and feature plane points. Finally, the Gaussian Newton solution is used to optimize the constraint relationship between the LiDAR odometry frames to minimize the error function, complete the LiDAR point cloud registration and better estimate the position and pose of the mobile robot. The experimental results show that compared with the traditional point cloud registration method, the proposed method has a higher point cloud registration accuracy, success rate and computational efficiency. The LiDAR odometry constructed using this method can better reflect the authenticity of the robot trajectory and has higher trajectory accuracy and smaller absolute position and pose error.<\/jats:p>","DOI":"10.3390\/s23073473","type":"journal-article","created":{"date-parts":[[2023,3,27]],"date-time":"2023-03-27T03:01:14Z","timestamp":1679886074000},"page":"3473","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["3D LiDAR Point Cloud Registration Based on IMU Preintegration in Coal Mine Roadways"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8234-7512","authenticated-orcid":false,"given":"Lin","family":"Yang","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Monitoring, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongwei","family":"Ma","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Monitoring, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhen","family":"Nie","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Monitoring, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heng","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Monitoring, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhongyang","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Monitoring, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3943-8483","authenticated-orcid":false,"given":"Chuanwei","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"},{"name":"Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Monitoring, Xi\u2019an 710054, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Levinson, J., Askeland, J., Becker, J., Dolson, J., Held, D., Kammel, S., Kolter, J.Z., Langer, D., Pink, O., and Pratt, V. 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