Research on the application of UAV/RTK technology for establishing large-scale topographical maps in complex terrain area

Abstract

Topographic maps are widely used in the economic, civil and defence fields. Topographic map accuracy has technical and economic significance when balancing work needs and investment budget for surveying and mapping work. The complexity of the terrain and topography of the measurement area will significantly affect field measurement work if traditional measurement methods are used. This article aims to build a process for applying drone technology that integrates dynamic GNSS positioning (UAV/RTK) into measuring and establishing large-scale topographic maps in areas with complex high-altitude terrain. These issues are of even more concern when the 1/500 scale topographic maps in Vietnam are in different regions of the country but have the same characteristic of being located in complex, mountainous terrain. Complex, with significant changes in terrain elevation, these characteristics significantly affect the accuracy of the established digital elevation model.