Application of UAV in complex strip topography survey
Aiming at the problems of low efficiency,high cost,high risk and low accuracy relia-bility when adopting conventional RTK(Real-time kinematic,carrier phase difference)measure-ment method for mapping complex zonal topographic maps,after analyzing photogrammetry and 3D laser scanning technology,A combination of the two methods is proposed for complex banded terrain survey.Taking the early terrain mapping work of a Pegasus V10 UAV equipped with DV-LiDAR10 LiDAR in a power station in western China as an example,the DOM(Digit-al 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 map-ping projects in complex areas.
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