Improving availability and accuracy of multi- GNSS positioning using QZSS

M. Kitamura, T. Ota, Y. Amano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This paper describes a new positioning method that improves the availability and accuracy of Multi-global navigation satellites system (GNSS) positioning by using QZSS satellites in urban canyon environments. Standard multi-GNSS is problematic because one satellite is defined as the master satellite in each GNSS, leaving insufficient numbers of satellites for positioning roles. Our new method uses QZSS as the sole master satellite. To this end, we solve the ambiguity of QZSS by the wide- lane method and the QZSS LEX signal, and preserve that double-difference (DD) ambiguity is integral number. We also estimate the inter system bias (ISB). The GNSS used in our method includes GPS, QZSS, GLONASS, Galileo, and BeiDou satellites. Static evaluation tests were conducted in open-sky and narrow-sky environments. The open-sky evaluation confirmed the accurate positioning ability of our proposed method (horizontal RMS error: 1.6 cm), whereas the narrow-sky evaluation confirmed that our proposed method operates with accurate positioning and high availability in urban canyon environments (fixed ratio: 92.7%, horizontal RMS error: 4.2 cm). In conclusion, our method realizes high accuracy and availability high-coverage positioning.

Original languageEnglish
Title of host publication27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014
PublisherInstitute of Navigation
Pages2341-2345
Number of pages5
ISBN (Electronic)9781634399913
Publication statusPublished - 2014
Event27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014 - Tampa, United States
Duration: 2014 Sep 82014 Sep 12

Publication series

Name27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014
Volume3

Other

Other27th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS 2014
CountryUnited States
CityTampa
Period14/9/814/9/12

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Aerospace Engineering
  • Computer Science Applications
  • Software

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