Application of UAV airborne LiDAR technology and oblique photogrammetry in topographic mapping
For areas with large terrain drops,dense vegetation,and poor intervisibility,this study proposed a method to complete the mapping using unmanned aerial vehicle (UAV) airborne light detection and ranging(LiDAR) technology and oblique photogrammetry. By taking advantage of LiDAR such as strong penetration,high density,and high-precision data acquisition,the ground elevation information could be accurately obtained. The plane position information of the object could be accurately obtained by using oblique photogrammetry,which had a relatively intuitive visual effect and could quickly carry out vector data collection. Through the combination of two technical means,high-precision topographic maps can be developed. By studying an actual project in Heilongjiang,this study demonstrated that this method could fully meet the accuracy requirements of 1∶500 digital topographic maps.
surveying and mappingtopographic mapunmanned aerial vehicle (UAV)light detection and ranging (LiDAR)oblique photogrammetry
万方数据
维普
