低空无人机在高原大比例尺地形图测绘中的应用

Application of low altitude UAV on large scale topographic map surveying on plateau

本文对低空无人机作为高新技术在测绘领域的应用进行了简要介绍,重点叙述了低空无人机在高原环境下进行大比例尺测图的流程。根据某高原工程无人机测量数据,采用不同航高、不同数量像控点的方法对所获数据进行了分析处理,得到4种成果。采用GPS-RTK实测数据对无人机测图高程精度进行评定,结论是:在高原无植被测区,采用低空无人机技术,设定航高130m、地面分辨率4cm,所获成果完全可满足1∶500地形图测绘的高程精度要求。

A brief introduction to low altitude UAV as a new technology was given in the field of surveying and mapping,and the process of large scale mapping by UAV on plateau with emphasis was also described in this paper. Through a plateau engineering surveying project,UAV survey data were analyzed and processed with different flight altitudes and different number of ground control points,four kinds of results were obtained through different solutions. Using GPS-RTK measured data to assess the elevation accuracy of UAV mapping,as for low altitude UAV on plateau without vegetation,flight altitude of 130 m,resolution of 4cm,a conclusion was drawn that the result of ground elevation data can fully meet the requirements of1∶ 500 topographic mapping.