| 地下空间激光扫描点云精度对比分析 |
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| 引用本文： | 韩文泉,胡伍生,陈昕,王孟和.地下空间激光扫描点云精度对比分析[J].测绘通报,2017(12):72-76. |
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| 作者姓名： | 韩文泉 胡伍生 陈昕 王孟和 |
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| 作者单位： | 1. 东南大学交通学院,江苏南京210009;南京市测绘勘察研究院有限公司,江苏南京210019;2. 东南大学交通学院,江苏南京,210009;3. 南京市测绘勘察研究院有限公司,江苏南京,210019 |
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| 基金项目： | 国家自然科学基金，江苏省科技支撑工业计划，江苏省测绘地理信息科研项目 |
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| 摘 要： | 利用4种激光扫描设备对地下空间扫描,针对获得的点云数据,用全站仪测量研究区内特征点三维坐标,统一点云空间参考;并从点云数据中获取特征点坐标,与测量的三维坐标对比分析。结果显示:推扫式激光扫描设备比架站式精度略低,最弱方向中误差为0.128 m,而架站式为0.039 m;用推扫式激光扫描设备对地下空间进行测量,能满足1∶500数字线划图的测量精度要求。
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| 关 键 词： | 地下空间 激光扫描 点云 精度对比 |
Analysis on the Precision of Laser Scanning Point Cloud in Underground Space |
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| Abstract: | The point cloud data of underground space were acquired with four kinds of laser scanning devices ,and three-dimensional coordinates of the feature points in the area were measured with the total station .All data used unified spatial reference .The three-dimensional coordinates of feature points were obtained from the point cloud data separately .The analysis of two measurements showed that the accuracy of position using mobile scanning device was slightly lower than using static one ,the mean square error was 0.128 m in the weakest direction ,on the contrast the static was 0.039 m.The measurement precision of 1:500 DLG can be obtained by the mobile laser scanning device in the underground space . |
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| Keywords: | underground space laser scanning point cloud precision comparison |
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