Application of real-time kinematic GNSS technology to establish a cross-section of the river

Abstract

The content of the paper presents the results of a research study on applying GNSS-RTK technology for topographic surveys along 10 cross-sectional profiles of the Cau River, passing through Bac Ninh city and Que Vo town in Bac Ninh province. The topography of the riverbed at all cross-sectional profiles meets the technical requirements for topographic surveying, with the rate of satisfactory survey points exceeding 80 % of the total measurement points. Moreover, the application of GNSS-RTK technology plays a crucial role in providing accurate riverbed data, which is essential for hydrodynamic modeling. This technology has also significantly reduced the need for human resources and fieldwork time, thereby enhancing economic efficiency.