On the performance of a low-cost single-frequency GPS+BDS RTK positioning model

Robert Odolinski, Peter J.G. Teunissen

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

When the GPS was the only satellite constellation in orbit, instantaneous single-frequency precise (millimeter-level) positioning was not possible and more expensive survey-grade multiple-frequency receivers had to be used. With the advent of the GNSSs, such as the Chinese BDS, low-cost receiver precise positioning will potentially become feasible. In this contribution we investigate the performance of such a low-cost single-frequency GPS+BDS model, making use of ublox EVK-M8T receivers, and compare its performance to a survey-grade dual-frequency GPS receiver solution, in Dunedin New Zealand. The least-squares variance-component estimation (LS-VCE) procedure is used to investigate the precision of the receiver code and phase observables of the low-cost receivers. The estimated (co)variances are needed so as to formulate a realistic stochastic model for precise RTK positioning. The performance of ambiguity resolution would otherwise deteriorate and hence the achievable positioning precisions as well. The low-cost RTK performance is then evaluated by formal and empirical ambiguity success-rates and positioning precisions. Our results indicate that the quality of the antennas used plays an important role, especially in suppressing multipath. We will demonstrate that the low-cost solution, which costs a few hundred USDs, can give a competitive ambiguity resolution and positioning performance to the survey-grade receivers, which cost several thousand USDs.

Original languageEnglish
Title of host publicationProceedings of the 2017 International Technical Meeting of The Institute of Navigation, ITM 2017
PublisherInstitute of Navigation
Pages745-753
Number of pages9
Publication statusPublished - 2017
Event2017 International Technical Meeting of The Institute of Navigation, ITM 2017 - Monterey, United States
Duration: 30 Jan 20172 Feb 2017

Conference

Conference2017 International Technical Meeting of The Institute of Navigation, ITM 2017
CountryUnited States
CityMonterey
Period30/01/172/02/17

Keywords

  • Least-squares variance component estimation (LS-VCE)
  • Low-cost receiver
  • Multi-GNSS
  • Real Time Kinematic (RTK) positioning

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    Odolinski, R., & Teunissen, P. J. G. (2017). On the performance of a low-cost single-frequency GPS+BDS RTK positioning model. In Proceedings of the 2017 International Technical Meeting of The Institute of Navigation, ITM 2017 (pp. 745-753). Institute of Navigation.