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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Application of airborne lidar in river environments: the River Coquet, Northumberland, UK
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Application of airborne lidar in river environments: the River Coquet, Northumberland, UK

机译：机载激光雷达在河流环境中的应用：北诺森林，英国

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摘要

The potential offered by LiDAR (laser-induced direction and ranging) for the mapping of gravel-bed river environments is addressed in this paper. A LiDAR dataset was obtained for a reach of the River Coquet, Northumberland, UK. Topographic data were acquired from the field at the same time using theodolite-EDM survey of a number of cross-profiles across the active river channel and bar units. These cross-profiles provide a means of comparing measurements from the LiDAR data with ground survey. Ordnance Survey large-scale mapping was used to georeference the survey data, which were then integrated with the LiDAR dataset using GIS software. A close correspondence between ground survey-drived cross-profiles and those generated using LiDAR is observed. However, the presence of both vegetation and deep water introduces anomalies in the LiDAR surface. Correction for these anomalies is needed to improve the accuracy of LiDAR mapping in the UK context and similar river environments. It is concluded that LiDAR has potential as an accurate survey tool for obtaining high resolution topographic data from unvegetated, exposed bar surfaces.
机译：本文解决了LIDAR（激光诱导的方向和测距）所提供的潜力。 LIDAR DataSet获得了英国诺森伯兰河畔富士河畔富艺的地方。在现场获取地形数据，同时使用AdioDolite-EDM调查在积极河道和栏杆单元上的许多交叉型材进行调查。这些交叉轮廓提供了与地面调查的LIDAR数据的测量比较的方法。调查大规模映射用于通过GIS软件与LIDAR数据集集成的调查数据。观察到地面调查驱动的交叉轮廓和使用激光雷达产生的那些密切对应。然而，植被和深水的存在引入了激光雷达表面的异常。需要对这些异常进行校正，以提高英国背景和类似河流环境中LIDAR映射的准确性。得出结论是，LIDAR具有潜力作为从未曝光的杆表面获得高分辨率地形数据的准确调查工具。

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