机载LiDAR在高精度滩涂DEM制作中的关键技术分析  

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

作　　者：文学东[1,2] 李俊峰 林昀[3] WEN Xuedong;LI Junfeng;LIN Yun(School of Geodetic and Geomatics,Wuhan University,Wuhan 430079,China;Ningbo Bureau of Natural Resources and Planning,Ningbo 315042,China;Ningbo Institution of Surveying and Mapping,Ningbo 315042,China)

机构地区：[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

出　　处：《测绘通报》2019年第6期92-95,共4页Bulletin of Surveying and Mapping

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。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.

关 键 词：机载Li DAR 点云分类 DEM 滩涂 

分 类 号：P237[天文地球—摄影测量与遥感]