Analysis of GNSS PPP multi-constellations using GPS, GLONASS and Galileo systems
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Abstract
Among the systems that make up GNSS, GPS and GLONASS are fully functional. In addition, Galileo and BeiDou are under development, and Galileo has 17 operating satellites. Thus, the purpose of this paper is to investigate the performance of multi-constellation combinations such as GPS, GLONASS and Galileo in some RBMC stations, using the PPP positioning method. For this purpose, the planimetric and altimetric accuracy of four multi-constellation stations were evaluated, belonging to the RBMC, covering the 30 days of April 2018. The data were edited in the GFZRNX freeware in order to obtain files with 60 and 180 minutes tracking intervals, containing only GPS, GPS and GLONASS, GPS and Galileo and the combination of the three systems. Data were processed from Bernese scientific software, version 5.2. The most accurate results in planimetry and altimetry were provided by the traditional GPS/GLONASS integration. Second, the GPS/GLONASS/Galileo combination was promising, showing its interoperability in the PPP positioning method.
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