多源数据模型下大比例尺地形测图精度分析与研究

Terrain Feature Acquisition and Accuracy Analysis of Large Scale Topographic Map based on Multi-source Data Model

以小区域光伏电站大比例尺地形测图为研究背景,将无人机倾斜摄影测量和轻型机载LiDAR作为数据来源,分别进行大比例尺地形图生产,分析了作业过程中的关键方法,并将成果与人工实测数据进行精度对比,实验结果表明利用无人机倾斜摄影测量与轻型机载LiDAR技术,完全能生产满足规范精度要求的大比例尺地形图,有效破解了在多植被山区无法高效获取高精度地形要素的难题。

Taking the large-scale topographic mapping of photovoltaic power station in small area as the research background,taking UAV tilt photogrammetry and LiDAR as data sources,the production of large-scale topographic maps was carried out respectively.The key methods in the operation process were analyzed,and the accuracy of the results was compared with the manual measured data.The experimental results showed that UAV tilt photogrammetry and LiDAR technology were used in the production of large-scale topographic maps.The technology can produce large-scale topographic maps that meet the requirements of standard accuracy,and effectively solve the problem that high-precision topographic elements can not be obtained efficiently in multi-vegetation mountainous areas.