Galileo Performance in Urban Environment

M. Malicorne, M. Bousquet, C. Bourga, B. Lobert and Ph. Erhard

Abstract:	Navigation by satellite is foreseen to grow rapidly in particular for urban applications. But performance has usually been assessed against civil aviation requirement. So, it is important that the design of future systems like Galileo take into account the urban market. Since the users requirements are stringent : accuracy needs are inferior at 10 meters with an maximum availability. This result shall be obtained in spite of high masking angle and severe multipath which can introduce degradations in the position estimation. In order to analyze the performance of space segment and user segment of the Galileo system, a precise modeling of the signal propagation in urban environment is needed. A simulation tool has thus been developed, using geometrical optic. This deterministic approach allows to model urban propagation with the level of accuracy need. This paper presents an analysis of the impact of urban environment on the system and compares different types of augmentations, at different level : space segment, signal design and user segment, to improve the performance of the system.
Published in:	Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000) June 26 - 28, 2000 The Catamaran Resort Hotel San Diego, CA
Pages:	443 - 450
Cite this article:	Malicorne, M., Bousquet, M., Bourga, C., Lobert, B., Erhard, Ph., "Galileo Performance in Urban Environment," Proceedings of the IAIN World Congress and the 56th Annual Meeting of The Institute of Navigation (2000), San Diego, CA, June 2000, pp. 443-450.
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