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 language | English |
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| Title of host publication | 22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009 |
| Pages | 3720-3729 |
| Number of pages | 10 |
| Volume | 6 |
| Publication status | Published - 1 Dec 2009 |
| Event | 22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009 - Savannah, GA, United States Duration: 22 Sept 2009 → 25 Sept 2009 |
Conference
| Conference | 22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009 |
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| Country/Territory | United States |
| City | Savannah, GA |
| Period | 22/09/09 → 25/09/09 |
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