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| 三维激光扫描仪高度对地面点云数据质量的影响* |
| Influence of Height of 3D Laser Scanner on Data Quality of Ground Point Clouds |
| 投稿时间：2018-08-20 修订日期：2018-12-28 |
| DOI： |
| 中文关键词: S地面三维激光 扫描高度 靶标点位精度 靶标反射率 点云数量 |
| 英文关键词: TLS Scanning height Point accuracy Reflectance Amount of point clouds |
| 基金项目:国家自然科学基金(51404272,51574242) |
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| 中文摘要: |
| S三维激光扫描测量中,扫描仪扫描高度对点云数据质量有一定的影响。本文通过现场试验,获取了距扫描仪中心5-250m距离范围内的点云数据,分析了扫描高度对特定地物LiDAR点云数量、靶标点位精度和靶标反射率的影响。结果表明：特定地物点云数量随扫描高度增加而增加,增幅为2.8%-36.6%；竖直方向上点云点位精度和靶标反射率随扫描高度增加而提高。靶标反射率随入射角β的增大而降低,在60°-75°范围内下降速度最大,而在80°时靶标反射率趋于稳定。 |
| 英文摘要: |
| Scanner height has effects on the quality of 3D laser scanning point cloud data. In this paper, the point cloud data from the range of 5-250m distance from the scanner center are obtained by field test, and the influence of the scanning height on the number of LiDAR point clouds, the target position accuracy and the target reflectivity of the specific objects is analyzed. The results show that the number of specific ground point clouds increases with the increase of the scanning height, and the increase is 2.8%-36.6%, and the point position accuracy and target reflectivity in the vertical direction are increased with the increase of the scanning height. The target reflectivity decreases with the increase of incident angle beta, and decreases at 60°- 75°, while the target reflectivity tends to be stable at 80°. |
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