无人机多源数据航测在大比例尺地形测绘中的应用OA

Large scale topographic maps are foundational data for engineering construction and planning management,with high precision requirements and detailed descriptions.When using traditional aerial photogrammetry or unmanned aerial vehicle single source data aerial surveying to produce large-scale topographic maps,due to their own limitations,the operational efficiency is low and the mapping accuracy is difficult to guarantee.The article combines engineering practice to introduce a multi-source data aerial survey technology for unmanned aerial vehicles.This technology integrates the advantages of stereo image pairs,dense point clouds,and 3D models,utilizing stereo image pairs to collect basic terrain information,dense point clouds to obtain feature elevation information,and 3D models to supplement detailed terrain information,achieving efficient and high-quality production of large-scale topographic maps.Compared with traditional methods,unmanned aerial vehicle multi-source data aerial surveying technology has the characteristics of being lightweight,flexible,efficient,fast,accurate,reliable,and intuitive.It has broad application prospects in the field of large-scale terrain mapping.