Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31393
Title: Ambiguity validation with combined ratio test and EIA
Authors: Chen, W 
Ji, S
Wei, B
Ding, X 
Chen, Y 
Zhao, C
Hu, C
Keywords: Ambiguity resolution validation
EIA
Fail-rate
GPS
R-ratio test
Success rate
Issue Date: 2009
Source: 22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009, 2009, v. 6, p. 3720-3729 How to cite?
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.
Description: 22nd International Technical Meeting of the Satellite Division of the Institute of Navigation 2009, ION GNSS 2009, Savannah, GA, 22-25 September 2009
URI: http://hdl.handle.net/10397/31393
ISBN: 9781615677481
Appears in Collections:Conference Paper

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