| 低空机载LiDAR点云定位误差分析 |
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| 引用本文： | 杜婷,李浩,杨彪,苏博,刘亚南. 低空机载LiDAR点云定位误差分析[J]. 测绘工程, 2018, 0(3): 25-29,34. DOI: 10.19349/j.cnki.issn1006-7949.2018.03.006 |
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| 作者姓名： | 杜婷 李浩 杨彪 苏博 刘亚南 |
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| 作者单位： | 河海大学 地球工程与工程学院,江苏 南京,211100 |
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| 基金项目： | 水利部黄土高原水土流失过程与控制重点实验室开放课题 |
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| 摘 要： | 低空机载LiDAR因其系统的复杂性,点云定位精度受很多系统误差影响。为了研究改善点云定位精度的方法,文中根据LiDAR定位误差模型综合分析航高、扫描角、IMU姿态角、姿态角误差等对点云定位误差的影响,并根据误差影响规律分析得出不同地形测图比例尺对飞行参数的要求。通过长江中下游实测地区作业验证,建议设置飞行参数得到的点云定位精度符合精度要求。
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| 关 键 词： | 机载LiDAR 定位误差 低空 点云 airborne LiDAR positioning accuracy low altitude point cloud |
Positioning error analysis on low-altitude airborne LiDAR point cloud |
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| DU Ting,LI Hao,YANG Biao,SU Bo,LIU Yanan. Positioning error analysis on low-altitude airborne LiDAR point cloud[J]. Engineering of Surveying and Mapping, 2018, 0(3): 25-29,34. DOI: 10.19349/j.cnki.issn1006-7949.2018.03.006 |
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| Authors: | DU Ting LI Hao YANG Biao SU Bo LIU Yanan |
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| Abstract: | Positioning accuracy of low-altitude airborne LiDAR point clouds is affected by many complex systemic errors.In order to develop a method to improve positioning accuracy,this paper analyzes the effects of flying height,scan angle,IM U attitude angle,attitude errors and other errors to the positioning errors based on LiDAR positioning model.Then,according to the law of positioning errors,suitable flight parameters can be obtained to meet the requirements of different scale topographic mapping. The experimental result in the Yangtze River region shows that the flight parameters set by the proposed method can improve the positioning error of point cloud. |
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