Evaluation of Multi-system Integrity Algorithms

P.F. Silva, M. Marcote, N. Schaeffer, J.F.M. Lorga, A. Fernández

Abstract:	The prospects of having available the modernized GPS, Galileo, and Satellite Based Augmented Systems (SBAS) foresee the creation of a GNSS multi-system. This new system will not only augment GPS L1, as it is done today with SBAS such as Wide Area Augmented System (WAAS) and the European Geostationary Navigation Overlay Service (EGNOS), but also GPS L5 and Galileo L1 and E5 and possibly GLONASS. The new GNSS multi-system will have a decisive role in supplying regional integrity to the different users of each service requiring it; for instance, the civil aviation, train and maritime transports, road charging, and restricted fishing areas enforcement. Two integrity approaches for multi-constellation are explored in this paper: protection level based and integrity risk based, corresponding to Galileo and SBAS integrity approaches, respectively. Both approaches have been implemented on an end-to-end simulator, for which results are presented together with the main simulation assumptions, including the UERE error budgets, operational degraded modes, and overbounding and risk allocation strategies. The preliminary results presented herein have been carried out by DEIMOS under the ongoing Multiconstellation Regional System (MRS) project for ESA and under the lead of INDRA Espacio.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	132 - 138
Cite this article:	Silva, P.F., Marcote, M., Schaeffer, N., Lorga, J.F.M., Fernández, A., "Evaluation of Multi-system Integrity Algorithms," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 132-138.
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