基于机载激光技术的浅海水深测绘应用分析

发布时间：2018-05-07 14:19

本文选题：机载激光测深 + 浅海水深测绘　；参考：《海洋科学》2017年04期

【摘要】：受船载仪器、海况等要素限制,传统水深测量中浅水区域无法对浅海水深进行测量。为克服此困难,利用近年来新兴的机载激光测深系统(light detection and ranging system,简称LiDAR)进行浅海水深测量,用LiDAR获取的点云数据进行处理后得到的水下地形等深线与海图图载水深进行直观对比,同一坐标点下的点云水深与截图水深进行定量分析。结果表明,LiDAR获取的水深精度高,水深点密集,可更快获得浅海区域详细的高精度的水下地形。这些优点使其在近岸浅海海岸防护、围海造田、港口建设等海洋工程项目中应用前景广阔。此外目前国内LiDAR技术主要用于陆地,应用于浅海水深测绘还很少,本研究对机载LiDAR进行水深测量的研究进行了补充。
[Abstract]:Due to the limitation of ship-borne instruments, sea conditions and other factors, the shallow water area can not be used to measure the shallow water depth in the traditional bathymetric survey. In order to overcome this difficulty, the light detection and ranging system (LiDAR), a newly developed airborne laser sounding system, is used for shallow water bathymetry in recent years. After processing the point cloud data obtained by LiDAR, the isobath of underwater topography is compared directly with the depth of the sea map, and the point cloud water depth and the water depth of the screenshot are quantitatively analyzed at the same coordinate point. The results show that the precision of water depth obtained by LiDAR is high, and the water depth is dense, and the detailed and accurate underwater topography in shallow water area can be obtained more quickly. These advantages make it have a broad application prospect in offshore engineering projects such as coastal protection, reclamation, port construction and so on. In addition, at present, LiDAR technology is mainly used on land, but it is seldom used in shallow water depth mapping. This study complements the research of airborne LiDAR bathymetry.
【作者单位】：上海海洋大学海洋科学学院;上海市海洋局河口海洋测绘工程中心;
【基金】：上海市科委基于国产高分辨率卫星的海洋测绘关键技术研究(14590502200)~~
【分类号】：P229

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