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oa Impact of Limited Horizon on Positioning Accuracy in RTK Mode
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, International Conference of Young Professionals «GeoTerrace-2023», Oct 2023, Volume 2023, p.1 - 5
Abstract
In the geodetic industry, the requirements for accuracy and time of positioning are among the most important aspects necessary for the effective and reliable implementation of projects. In addition, the development of reference stations in Poland increases the functionality of GNSS equipment using various global satellite groups, the reception modules of which are constantly developing and providing more accurate coordinates in the spatial system. The purpose of this work is to study the accuracy of the precise positioning of fixed points using the GNSS RTK measurements method of various fully working and functioning global satellite systems using VRS (Virtual Reference Station) that sends correction data through the stream RTN4G_VRS_RTCM3.2. The analysis of accuracy is performed by a fixed criterion that determines the value of the cut-off angle, which reflects the results of practical GNSS RTK-measuring in real time for conducive (CA=10°), moderate (CA=30°) and complex (CA=45°) terrain. For testing to maintain high accuracy, only Fix type measurements are considered. From the point of view of the types of solutions obtained during the GNSS positioning, three systems showed a similar level. As a result of measurements, BeiDou, GPS and Galileo had a conducive Fix solution about 80%. GLONASS demonstrated the worst result, where the measurement of such quality is less than 50%. Nowadays the most stable is the GPS satellite system.
