Application And Analysis Of Drones In Large Scale Topographic Mapping

UAV low-altitude photogrammetry technology^[1],with high timeliness,low cost,low risk and other advantages,is widely used in disaster detection,emergency rescue,agricultural plant protection,mapping and other aspects of^[2][3].In the small and medium-sized area data acquisition,it has become a common technical means for obtaining geographic information data.The large-scale topographic map is an important basis for site selection,construction and design of construction projects.With the support of new technologies,with the assurance of accuracy,More efficient and convenient topographic mapping will greatly change the existing mode of operation and enhance competitiveness.In this paper,UAV low-altitude photogrammetry surveying and mapping of large-scale topographic maps production projects for the study^[4],focusing on the following points were described:1.UAV low-altitude photogrammetry system of the core technology and process description.2.Accuracy evaluation and comparative analysis of the results from different experimental areas.3.Through the analysis,summarizes the advantages of using this technology.