Galileo System Design & Performance

V. Oehler, H.L. Trautenberg, J. Krueger, T. Rang, F. Luongo, J.P. Boyereo, J. Hahn, D. Blonski

Abstract:	The EU/ESA Galileo Project system (Galileo) as specified is a very demanding Global Navigation Satellite System in terms of performance requirements on integrity, continuity, and availability. It has been shown by simulations that the performance of classical SBAS integrity concepts is unable to meet Galileo’s required global worst user location (WUL) unavailability figure of 0.5% for integrity and continuity. Applying the demanding requirements on Galileo services, a new integrity concept has been developed using a different overall approach and new derived requirements on the space segment, ground segment and user segment. The new integrity concept will be introduced and it will further be demonstrated how the new approach can be understood from and reconciled with a classical protection level point of view. The present paper starts with a short introduction of Galileo basics, and highlights the most demanding applicable system performance requirements that drive the overall Galileo architecture and design. A high-level concept and method description on how to assess Galileo’s end-to-end system performance provides the background to derive the currently achievable system performance by means of service volume simulations (SVS). Such results of key requirements on integrity, continuity, and availability are presented at the end of the paper. To compare these results with existing SBAS concepts, the Galileo SVS have also been run applying typical SBAS requirements and assumptions.
Published in:	Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006) September 26 - 29, 2006 Fort Worth Convention Center Fort Worth, TX
Pages:	492 - 503
Cite this article:	Oehler, V., Trautenberg, H.L., Krueger, J., Rang, T., Luongo, F., Boyereo, J.P., Hahn, J., Blonski, D., "Galileo System Design & Performance," Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006), Fort Worth, TX, September 2006, pp. 492-503.
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