面向测图的无人机载LiDAR应用研究初探  

Preliminary Study on UAV-borne LiDAR Application for Topographic Mapping

作　　者：郝思宝[1] 孙磊[1] 于婷婷 HAO Sibao;SUN Lei;YU Tingting(Jiangsu Geologic Surveying and Mapping Institute,Nanjing 211102,China)

机构地区：[1]江苏省地质测绘院,江苏南京211102

出　　处：《城市勘测》2022年第4期153-157,共5页Urban Geotechnical Investigation & Surveying

基　　金：江苏省测绘地理信息科研项目(JSCHKY201907)。

摘　　要：现有LiDAR相关规程未对面向测图应用的技术及质量要求做出规定。文章从点云密度、覆盖完整性以及点云精度等方面,总结了大比例尺测图生产对点云数据的要求。在分析航飞参数对点云成果质量影响的基础上,总结了航飞设计工作流程,编制了设计计算工具。通过航飞试验,验证了工作流程及工具的正确性。在对不同设计方案生产的点云成果进行质量评定后,得到采用无人机载LiDAR方法,在140 m以下航高时,点云平面与高程均可达到5 cm,能够满足测图应用需求的结论。相关研究为无人机LiDAR系统面向测图的应用提供了参考。The existing LiDARrelevant specifications do not specify the technical and quality requirements of UAV-borne LiDAR systems for topographic mapping.This paper studies the requirements of point cloud data for large-scale topographic mapping production in terms of point cloud density,coverage integrity,and point cloud accuracy.Based on the analysis of the influence of flight parameters on the quality of point cloud data,it summarizes the flight plan workflow and compiles design calculation tools.The flight test verified the correctness of the workflow and tools.After the quality assessment of the point cloud data produced by different plan,it is concluded that the plane and elevation precision of UAV-borne LiDAR point cloud can reach 5 cm when the flight height of UAV below 140 m.Related research provides reference for the application of UAV LiDAR system for topographic mapping.

关 键 词：无人机载LiDAR 点云测图 点云精度 航飞设计 

分 类 号：P237[天文地球—摄影测量与遥感] P225.2[天文地球—测绘科学与技术]