Real-time single-frequency precise positioning with Galileo satellites

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JOURNAL OF NAVIGATION, vol.75, no.1, pp.124-140, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 75 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.1017/s037346332100076x
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, Communication Abstracts, Geobase, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Page Numbers: pp.124-140
  • Keywords: Galileo, single-frequency, precise point positioning, real-time, MULTI-GNSS, CORRECTION MODEL, PERFORMANCE, GPS, PPP, QUALITY, BEIDOU, RTK, GLONASS, ORBIT
  • Hacettepe University Affiliated: Yes


Following substantial progress achieved recently, the Galileo constellation provides a considerable satellite resource for the GNSS applications. In this regard, the performance assessment of real-time single-frequency precise positioning with Galileo satellites is the main objective of this research. For this purpose, several experimental tests were conducted in this study with two single-frequency positioning models, namely single-frequency code-based positioning and code-phase combination. The results show that Galileo presents an adequate number of visible satellites sufficient for single-frequency positioning. Also, the study demonstrates that, in comparison to GPS observations, Galileo observations have a significantly lower noise level. For the single-frequency code-based positioning, Galileo presents a better positioning accuracy than GPS by 25.8% on average. When compared with GPS, a 9.4% better positioning accuracy is acquired from Galileo for the single-frequency code-phase combination, with its average convergence time shorter than GPS by a ratio of 24.4%.