测绘通报 ›› 2019, Vol. 0 ›› Issue (6): 92-95.doi: 10.13474/j.cnki.11-2246.2019.0192

• 技术交流 • 上一篇    下一篇

机载LiDAR在高精度滩涂DEM制作中的关键技术分析

文学东1,2, 李俊峰3, 林昀3   

  1. 1. 武汉大学测绘学院, 湖北 武汉 430079;
    2. 宁波市自然资源和规划局, 浙江 宁波 315042;
    3. 宁波市测绘设计研究院, 浙江 宁波 315042
  • 收稿日期:2018-09-29 修回日期:2018-11-02 出版日期:2019-06-25 发布日期:2019-07-01
  • 作者简介:文学东(1979-),男,博士生,高级工程师,主要从事摄影测量、地理信息、遥感图像处理和三维激光成像扫描测量技术的研究。E-mail:66676483@qq.com

Key technologies analysis of airborne LiDAR in high accuracy tidal flats DEM production

WEN Xuedong1,2, LI Junfeng3, LIN Yun3   

  1. 1. School of Geodetic and Geomatics, Wuhan University, Wuhan 430079, China;
    2. Ningbo Bureau of Natural Resources and Planning, Ningbo 315042, China;
    3. Ningbo Institution of Surveying and Mapping, Ningbo 315042, China
  • Received:2018-09-29 Revised:2018-11-02 Online:2019-06-25 Published:2019-07-01

摘要:

机载LiDAR可快速获取高密度的地表三维几何信息,具有全天候、主动观测、对地物间缝隙有一定穿透性等优点,在滩涂测绘中具有很大优势。本文对宁波市激光雷达滩涂测绘工作进行了经验总结,首先介绍机载LiDAR技术在滩涂测绘中的优势,然后在LiDAR数据处理基础上,重点分析高精度滩涂DEM制作的关键技术,最后对DEM产品进行精度评定。

关键词: 机载LiDAR, 点云分类, DEM, 滩涂

Abstract:

LiDAR can quickly obtain three-dimensional geometric information of the surface directly. Meanwhile, LiDAR has the great advantages of all-weather, active observing and certain penetration between the surface features gap. In this paper, LiDAR surveying and mapping work experience of Ningbo tidal flats is summarized. Firstly, the superiority of airborne LiDAR technology in tidal flats surveying and mapping is introduced. Then, on the basis of the data processing flow of LiDAR point, the emphasis is focused on key technologies of high precision DEM production. Finally, the accuracy evaluation of DEM products is carried out.

Key words: airborne LiDAR ranging, point cloud classification, DEM, tidal flats

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