机载激光雷达数据在大比例尺地形图测制中的应用  

Application of Airborne LiDAR Data in the Production ofLarge-scale Topographic Maps

作　　者：李建勇 李代云 LI Jianyong;LI Daiyun(The Sixth Topographic Survey Brigade of the Ministry of Natural Resources,Chengdu 610500,China)

机构地区：[1]自然资源部第六地形测量队,四川成都610500

出　　处：《测绘与空间地理信息》2024年第8期26-29,34,共5页Geomatics & Spatial Information Technology

基　　金：四川省测绘地理信息学会科技开放基金资助项目——基于多源数据的城市级实景三维产品构建与可视化关键技术研究(CCX202316)资助。

摘　　要：相较于数字航空摄影测量立测采集地貌要素,通过机载激光雷达数据获取等高线、高程点更加高效且精度更高。本文以南充市某地1∶500地形图测制项目为例,探索机载激光雷达技术配合数字航空摄影测量技术在城市大比例尺地形图测制中的运用机制,形成了一套完整的技术方法,同时分析了方法的可行性并对测图成果精度进行了系统性评估,结果表明,基于机载激光雷达数据获取地貌要素精度满足1∶500地形图精度要求。Compared with digital aerial photogrammetry stereoscopic collecting geomorphic elements,it is more efficient and accurate to obtain contour lines and elevation points through airborne LiDAR data.Taking the 1∶500 topographic map production project of a certain place in Nanchong city as an example,this paper explores the application mechanism of airborne LiDAR technology combined with digital aerial photogrammetry technology in the measurement of urban large-scale topographic maps,forms a complete set of technical operation process,analyzes the feasibility of the method and systematically evaluates the accuracy of the mapping results.The results show that the accuracy of geomorphic elements obtained based on airborne LiDAR data can meet the accuracy requirements of 1∶500 scale topographic maps.

关 键 词：数字航空摄影测量 机载激光雷达 立体测图 大比例尺地形图 

分 类 号：P231[天文地球—摄影测量与遥感]