无人机在获取高精度DEM数据中高度设计的研究

A Study of Height Design of Obtaining High-accuracy DEM Data by UAV

随着技术的发展,无人机被广泛应用在各行各业。尤其是近些年来兴起的基于运动重建(SFM)的无人机摄影测量技术,被广泛的应用在地质图制作,滑坡、冲沟等地质灾害调查方面,都取得了良好的成果。取得高分辨的DEM(Digital elevation model)数据是应用的前提。对利用无人机获取高精度DEM数据时,如何设计飞行高度进行了研究讨论。

With the development of technology, UAV is widely used in all walks of life. Especially in recent years, the technology of unmanned aerial vehicle photogrammetry on motion reconstruction （SfM） has been widely used in geological map making, landslides, gully and other geological disasters, which have achieved good results. Obtaining high resolution DEM （Digitalelevationmodel） data is the premise of application. But there are not many articles on the application of UAV in engineering and geology. There are few detailed discussions on the detailed methods of obtaining DEM data by UAV. In this paper, how to design flight height for UAV to acquire high- precision DEM data is discussed.