无人机机载LiDAR在山区地形测量中的应用  

Application of unmanned aerial vehicle airborne LiDAR in mountainous topographic surveying

作　　者：涂江林 TU Jianglin(Upper Changjiang River Bureau of Hydrological and Water Resources Survey,Bureau of Hydrology of Changjiang Water Resources Commission,Chongqing 408000,China)

机构地区：[1]长江水利委员会水文局长江上游水文水资源勘测局,重庆408000

出　　处：《水利水电快报》2025年第3期59-64,共6页Express Water Resources & Hydropower Information

摘　　要：为了研究机载LiDAR技术在山区地形测量中的适用性,以乌江流域彭水水电站库区地形为例,利用DJLTerra、Terrasoild等软件滤波、降噪处理后的机载LiDAR点云数据与传统测量数据进行误差对比,分析了机载LiDAR在不同应用场景下的穿透性、平面精度、高程精度。研究结果表明:机载LiDAR点云数据的平面位置坐标中误差为0.021,最大误差为0.034,高程中误差为0.008 m,最大误差为0.021,满足1∶500山区丘陵地形图测量规范要求。机载LiDAR的高精度、高穿透能力适用于陡峭山体、横竖交错的房屋、茂密的树木等地形复杂区域,相较于传统测量方式更安全、可靠、快捷。In order to study the applicability of airborne LiDAR technology in mountainous terrain measurement.DJLTerra was used to study the terrain of the Pengshui Hydropower Station reservoir area in the Wujiang River Basin.The airborne LiDAR point cloud data filtered and denoised by Terraoil and other software were compared with traditional measurement data for error analysis.The penetration,planar accuracy,and elevation accuracy of the airborne LiDAR were analyzed.The research results indicated that the mean square error of the planar position coordinates of the airborne LiDAR point cloud data was 0.021,with a maximum error of 0.034.The mean square error of the elevation was 0.008 m,with a maximum error of 0.021,which could meet the measurement specifications for 1∶500 mountainous hilly terrain maps.The airborne LiDAR had a high precision and penetration ability,and was suitable for complex terrain areas such as steep mountains,houses crisscrossing horizontally and vertically,and dense trees.Compared to traditional measurement methods,the airborne LiDAR technology was safer,more reliable,and faster.

关 键 词：无人机机载LiDAR 地形测量 点云数据 彭水水电站 

分 类 号：P237[天文地球—摄影测量与遥感] TN959.73[天文地球—测绘科学与技术]