Augmenting EGNOS with an E5b Channel

H. Al Bitar, M. Raimondi, D. Kubrak, L. Ries

Abstract:	EGNOS, the European Satellite Based Augmentation System (SBAS), is being updated to provide an L1/L5 dual frequency service. In a near future, this dual frequency service will replace the currently broadcast legacy L1 mono-frequency service. To cope with this dual frequency signal, the space segment is being updated to be able to process a 50MHz E5 channel, were the lower part is allocated to the L5 signal. The E5b band available within this channel is not used yet. In this context, the present paper proposes to evaluate the feasibility of a possible L5/E5b cohabitation within the new E5 capable GEO payloads, while avoiding any impact on the SoL service. The focus is set on the impact of the Power Amplifier (PA) non-linearities on a composite L5+E5b having a non-constant envelope; the corresponding simulation results show that the addition of the E5b signal has a very limited impact on the L5 signal received power. A preliminary generation and synchronization scheme for the E5b is then proposed, based on inputs from the EGNOS L5 synchronization scheme. It is noteworthy that this paper completes another one presented at the 6th European workshop on GNSS signals and signal processing at Munich [1].
Published in:	Proceedings of the 2014 International Technical Meeting of The Institute of Navigation January 27 - 29, 2014 Catamaran Resort Hotel San Diego, California
Pages:	280 - 291
Cite this article:	Bitar, H. Al, Raimondi, M., Kubrak, D., Ries, L., "Augmenting EGNOS with an E5b Channel," Proceedings of the 2014 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2014, pp. 280-291.
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