Application of UAV Framework Route Design in Cadastral Survey
Aiming at the problems of low efficiency, high cost and long measurement cycle of traditional cadastral survey methods, this paper discusses a cadastral survey method based on UAV photogrammetry technology. Firstly, in route planning, a framework route design scheme is adopted to improve the system correlation between images and make image matching more sufficient. Then, in the process of aerial triangulation, in order to give full play to the positioning advantages of differential UAV, the adjustment strategy of auxiliary beam method under the optimal coordinate weight of photographing station is considered. Finally, the digital surface model (DSM) is applied to the vector acquisition of cadastral map, and the corresponding accuracy analysis is carried out. The experimental results show that the UAV framework route design method in this paper can help complete the complete cadastral survey task in the mission area. After determining the coordinate weight of the best photographing station, the production accuracy requirements of 1:500 scale cadastral map can be met without field control points, which greatly improves the measurement efficiency and has strong engi-neering application value.
万方数据
维普
