Analysis of Positioning Accuracy Using Multi Differential GNSS in Coast and Port Area of South Korea

Abstract

Obtaining high-accuracy position information in coastal environments is very important. To obtain high-accuracy and high-precision positioning data at low cost, the use of a GPS augmentation system is an appropriate approach. Recently, in addition to GPS, the number of different types of satellite navigation systems is growing; such a system is called a GNSS (Global Navigation Satellite System). The positioning accuracy for every available GNSS is improved compared to the accuracy obtained using only GPS. However, to date, there are no RTCM standards for differential GNSS, except for DGPS. Because the RTCM DGNSS standard and DGNSS receiver did not exist until now, experiments related to GNSS positioning using DGNSS in coastal areas and ports have not been performed. Thus, the creation of GNSS (GPS, GLONASS, BeiDou) correction data is presented in this paper. Moreover, the positioning accuracy was measured using GNSS and its correction data. This experiment was performed for 5 ports in South Korea. The results indicate that the measured positioning accuracy using GNSS correction data should be considered applicable to both coastal and port environments..