无人机LiDAR免控制测量技术在1∶10000 DEM更新中的应用  

The Application of Survey Technology Without Drone Control of Unmanned Aerial Vehicle LiDAR for 1∶10000 DEM Date Updating

作　　者：王辉 李宝 方庆晨 WANG Hui;LI Bao;FANG Qingchen(Anhui Provincial Third Institute of Surveying and Mapping,Hefei230601,China)

机构地区：[1]安徽省第三测绘院,安徽合肥230601

出　　处：《城市勘测》2024年第5期150-154,共5页Urban Geotechnical Investigation & Surveying

基　　金：安徽省测绘局科技创新项目(2023-KJ-03)。

摘　　要：在安徽省1∶10000基础地理信息数据更新工程DEM局部更新工作中,针对外业中控制点布设工作量大、难度高的特点,研究无人机LiDAR测量技术生产DEM的免控制技术方法,利用激光点云分类结果中提取的可靠地面点,建立高程拟合模型,拟合转换点云高程,生产DEM。并与传统通过实测控制点进行点云高程拟合生产的DEM成果精度比较。研究结果表明:利用免控制技术方法生产的DEM精度可以满足安徽省1∶10000 DEM更新要求。In the local updating work of the 1∶10000 basic geographic information data updating project in Anhui Province,aiming at the characteristics of heavy workload and high difficulty in the layout of control points in the field,this paper studies the control-free technical method of DEM production by UAV-LiDAR measurement technology,and uses the reliable ground points extracted from the laser point cloud classification results to establish an elevation fitting model to fit the elevation of the converted point cloud and produce DEM.And compared with the accuracy of DEM products produced by traditional point cloud elevation fitting through measured control points.The study show that the accuracy of DEM produced by the control-free technology could meets the requirements of 1∶10000 DEM updating in Anhui Province.

关 键 词：激光雷达点云 数字高程模型 无人机 可靠地面点 

分 类 号：P231.5[天文地球—摄影测量与遥感] P225.2[天文地球—测绘科学与技术]