Ambiguity validation with combined ratio test and EIA

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

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

To ensure reliable ambiguity resolution, ambiguity validation is an indispensable step. It has been a challenge for many years and is far from being resolved. Over the past years, various ambiguity validation methods have been proposed, such as F-ratio test, R-ratio test, difference test, projector test, Ellipsoidal Integer Aperture (EIA) estimator and Penalized Integer Aperture (PIA) estimator. In this paper, through analysis and test, we find that, when the aperture region of EIA is not allowed to be overlapped, the efficiency of ambiguity resolution with EIA is low and it is not applicable to fast static positioning or real-time kinematic (RTK) applications. Then EIA with overlapped aperture regions is recommended and the resulted fail-rate becomes upper bound of the actual one. After that, it is suggested that combined use of overlapped EIA and R-ratio test can increase the reliability of ambiguity resolution. Finally, numerical tests are carried out based on practical buoy data and simulated Galileo data.
Original languageEnglish
Title of host publication22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009
Pages3720-3729
Number of pages10
Volume6
Publication statusPublished - 1 Dec 2009
Event22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009 - Savannah, GA, United States
Duration: 22 Sep 200925 Sep 2009

Conference

Conference22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009
Country/TerritoryUnited States
CitySavannah, GA
Period22/09/0925/09/09

Keywords

  • Ambiguity resolution validation
  • EIA
  • Fail-rate
  • GPS
  • R-ratio test
  • Success rate

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Electrical and Electronic Engineering
  • Communication

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