激光雷达在长江口无居民岛屿地形测绘中的应用  

Application of LiDAR in Topographic Surveying of Uninhabited Islands in the Yangtze River Estuary

作　　者：黄波 孟陈[2,3,4] 丁海健 杜锐 魏小岛 唐玉娟 HUANG Bo;MENG Chen;DING Hai-jian;DU Rui;WEI Xiao-dao;Tang Yu-juan(Shanghai Shannan Survey and Design Co.Ltd.,Shanghai 201206,China;School of Geographic Sciences,East China Normal University,Shanghai 200241,China;Low Altitude Economy Spatial Intelligence Technology Research Center East China Normal University,Shanghai,200241,China;Jingyao(Shanghai)Information Technology Co.Ltd.,Shanghai 200241,China;Shanghai Survey and Design Institute Co.Ltd.,Shanghai 200241,China;Jiangsu Xingyue Surveying and Mapping Technology Co.Ltd.,Yancheng Jiangsu 222400,China)

机构地区：[1]上海山南勘测设计有限公司,上海201206 [2]华东师范大学地理科学学院,上海200241 [3]华东师范大学低空经济空间智能技术研究中心,上海200241 [4]景遥〔上海〕信息技术有限公司,上海200241 [5]上海勘测设计研究院有限公司,上海200434 [6]江苏星月测绘科技股份有限公司,江苏盐城222400

出　　处：《现代测绘》2024年第5期12-15,共4页Modern Surveying and Mapping

基　　金：上海市科委2022年度“科技创新行动计划”科技支撑碳达峰、碳中和专项项目(22dz1208503);中国长江三峡集团有限公司科研项目资助(202103552);国家重点研发计划政府间国际科技创新合作项目(2022YFE0117500);上海勘测设计研究院有限公司科标业项目资助(2023HJ〔83〕-005)

摘　　要：无人岛屿由于距离陆地远、登岛难和无卫星参考基站信号等问题,一直是远离陆地无人岛屿地形测量的难点。基于飞马长航时、控制距离远的垂直起降固定翼无人机,采用离岛远距离起降飞行测量方案,对长江口九段沙无居民岛屿进行激光雷达全覆盖遥感测量,三维激光点云提取地面点后构建步长为0.5 m的九段沙数字高程模型(DEM)。经实测10个检查点与无人机激光雷达所提取地面点的高程进行精度验证,DEM高程精度平均幅度为0.075 m,平均误差为-0.014 m,均方差为0.007 m。本研究可以很好解决无人岛屿测量难、登岛难和起飞难的问题,为长江口无居民海岛地形测绘提供了新的思路和方法。Uninhabited islands have always been a challenge for surveying due to their remoteness from the mainland,difficulties in island access,and the absence of satellite reference base station signals.This study utilizes a long-endurance vertical take-off and landing(VTOL)fixed-wing unmanned aerial vehicle(UAV)with extended control range to conduct a comprehensive remote sensing survey using LiDAR on the Jiuduansha uninhabited islands in the Yangtze River Estuary.The three-dimensional laser points are extracted to construct a digital elevation model(DEM)of Jiuduansha with a step size of 0.5m.Through the verification of 10checkpoints and the elevation extracted from the UAV LiDAR data,the average amplitude of DEM elevation accuracy is 0.075m,with a mean error of-0.014mand a mean square error(MSE)of 0.007m.This study effectively addresses the difficulties of surveying,island access,and take-off for uninhabited islands,providing a new approach and methodology for topographic surveying of uninhabited islands in the Yangtze River Estuary.

关 键 词：无居民海岛 地形测量 激光雷达 远距离起降飞行 

分 类 号：P714[天文地球—海洋科学] TN958.98[电子电信—信号与信息处理]