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Potential Performance Levels of a Combined Galileo/GPS Navigation System

Published online by Cambridge University Press:  16 May 2001

W. Y. Ochieng ,
K. Sauer ,
P. A. Cross ,
K. F. Sheridan ,
J. Iliffe ,
S. Lannelongue ,
N. Ammour  and
K. Petit
W. Y. Ochieng
Affiliation:
Imperial College of Science, Technology and Medicine
K. Sauer
Affiliation:
Imperial College of Science, Technology and Medicine
P. A. Cross
Affiliation:
University College London
K. F. Sheridan
Affiliation:
University College London
J. Iliffe
Affiliation:
University College London
S. Lannelongue
Affiliation:
Alcatel Space Industries
N. Ammour
Affiliation:
Alcatel Space Industries
K. Petit
Affiliation:
Alcatel Space Industries
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Abstract

This paper presents the results of a research project that investigated the potential benefits of a combined Galileo/GPS navigation system. The research addressed in detail the two key required navigation performance (RNP) parameters of accuracy and integrity. The project was supported by Alcatel Space and was a contribution to the Galileo definition studies (supported by the European Community under the GALA project). The results show significant improvements in both accuracy and integrity (achievable through RAIM) when a combined constellation is used rather than Galileo alone.

Keywords

1. Galileo2. GPS3. Accuracy4. Integrity
Type
Research Article
Information
The Journal of Navigation , Volume 54 , Issue 2 , May 2001 , pp. 185 - 197
Copyright
© 2001 The Royal Institute of Navigation

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