Impact of Multi-GNSS on Positioning Accuracy and Multipath Errors in High-Precision Single-Epoch Solutions - A Case Study in Ningbo China

Lawrence Lau, Hiroaki Tateshita, Kazutoshi Sato

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)


Real-Time Kinematic (RTK) Global Positioning System (GPS) carrier phase-based precise positioning has been widely using in geodesy and surveying applications, and other high accuracy positioning and navigation applications in the last two decades. More Global Navigation Satellite Systems (GNSS) are being developed and it is usually expected that combining GNSS will have a positive impact on positioning accuracy. This paper describes a case study carried out at Ningbo in China on the impact of multi-GNSS on RTK single epoch solutions. Both GPS and GLONASS are fully operational now. Moreover, the Quasi-Zenith Satellite System (QZSS) can be observed at Ningbo. Currently, only one QZSS satellite MICHIBIKI is operational. This paper carries out an early assessment of the impact of QZSS on GPS and GLONASS single-epoch high precision positioning (i.e., single-epoch positioning accuracy assessment) and investigates the multipath errors in the GPS, GLONASS and QZSS multi-frequency data.

Original languageEnglish
Pages (from-to)999-1017
Number of pages19
JournalJournal of Navigation
Issue number5
Publication statusPublished - 27 Sep 2015
Externally publishedYes


  • Multi-GNSS
  • Multipath errors
  • QZSS
  • Single-epoch positioning accuracy assessment

ASJC Scopus subject areas

  • Oceanography
  • Ocean Engineering

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