Potential benefits of GPS/GLONASS/GALILEO integration in an urban canyon - Hong Kong

Shengyue Ji, Wu Chen, Xiaoli Ding, Yongqi Chen, Chunmei Zhao, Congwei Hu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

53 Citations (Scopus)


With the existing GPS, the replenishment of GLONASS and the launching of Galileo there will be three satellite navigation systems in the future, with a total of more than 80 satellites. So it can be expected that the performance of the global navigation satellite system (GNSS) will be greatly improved, especially in urban environments. This paper studies the potential benefits of GPS/GLONASS/Galileo integration in an urban canyon - Hong Kong. The navigation performances of four choices (GPS alone, GPS+GLONASS, GPS+Galileo and GPS+GLONASS+Galileo) are evaluated in terms of availability, coverage, and continuity based on simulation. The results show that there are significant improvements in availability, coverage and continuity, by using GPS+GLONASS+Galileo compared with the other choices. But the performance is still not good enough for most navigation applications in urban environments.
Original languageEnglish
Pages (from-to)681-693
Number of pages13
JournalJournal of Navigation
Issue number4
Publication statusPublished - 1 Oct 2010


  • GPS
  • Urban canyons

ASJC Scopus subject areas

  • Oceanography
  • Ocean Engineering


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