无人机在复杂带状地形测量中的应用

Application of UAV in complex strip topography survey

针对采用常规RTK(Real-time kinematic,载波相位差分)测量方式测绘复杂带状地形图时存在效率低、成本高、危险性高、成果精度可靠性不高的问题,文章在分析了摄影测量和三维激光扫描技术后,提出将二者结合用于复杂带状地形测量中,并以飞马V10无人机搭载DV-LiDAR10激光雷达在西部地区某电站的前期地形测绘工作为例,采用免像控的作业模式,分别获取了DOM(Digital Orthophoto Map,数字正射影像)、DEM(Digital Elevation Model,数字高程模型)和激光点云数据成果,通过将无人机航测成果与RTK采集的检查点进行平面、高程精度的对比和分析,得出了无人机在免像控模式下进行复杂带状地形测绘的平面、高程精度符合规范要求,为复杂地区类似的地形测绘项目提供了借鉴。

Aiming at the problems of low efficiency,high cost,high risk and low accuracy reliability when adopting conventional RTK(Real-time kinematic,carrier phase difference)measurement method for mapping complex zonal topographic maps,after analyzing photogrammetry and 3Dlaser scanning technology,A combination of the two methods is proposed for complex banded terrain survey.Taking the early terrain mapping work of a Pegasus V10UAV equipped with DV-LiDAR10LiDAR in a power station in western China as an example,the DOM(Digital Orthophoto Map)is obtained by using image-free operation mode.Digital ortho image,DEM(Digital Elevation Model)and laser point cloud data results,by comparing and analyzing the plane and elevation accuracy of UAV aerial survey results with the checkpoint collected by RTK.It is concluded that the plane and elevation accuracy of the UAV in the image-free mode can meet the requirements of the standard,which provides a reference for similar terrain mapping projects in complex areas.