Advanced System Architectures for Reception of Navigation Signals in Disparate Environments

A. Pujante-Cuadrupani

Abstract:	In the period 2007-2009, ESA (European Space Agency) is carrying out feasibility studies in the framework of the Future Satellite Navigation Systems initiative to prospect attractive techniques and technologies that will be the seed for the future GNSS European systems. One of the main axis of this effort is the identification of new multiplexing schemes and signals that could be adapted to reception in disparate environments. The goal of this effort is to investigate how to extend the coverage of the Galileo system in areas where no service can be provided at present to potential users with a view for implementation in future evolutions of the system. The first approach is to achieve that goal by autonomous means, self contained in the GNSS system architecture. Use of supporting sensors at user receiver segment will also be considered as mitigation techniques to provide better signal reception in disparate environments. The studies have taken into consideration the following aspects, intending to reach a system optimization rather than focusing on improving a single element of the system architecture: required service performance, choice of the band to allocate the signal, choice of multiplexing schemes to transport adequate signals, analysis of a number of signal modulations suitable for reception in disparate environments, payload technology future capabilities and receiver technology future capabilities In particular the choice of the frequency slot has considered the following aspects: compatibility with existing and planned navigation signals, compatibility with ITU regulations feasibility wrt to payload technology and cost versus benefit considerations. This paper sketches a preliminary approach and proposes some possible ways to achieve the expected performance by means of a set of new signals and multiplexing schemes adapted to different environments and suggests future research lines to improve the performance in disparate environments such as indoor and urban canyons.
Published in:	Proceedings of the 2009 International Technical Meeting of The Institute of Navigation January 26 - 28, 2009 Disney's Paradise Pier Hotel Anaheim, CA
Pages:	335 - 340
Cite this article:	Pujante-Cuadrupani, A., "Advanced System Architectures for Reception of Navigation Signals in Disparate Environments," Proceedings of the 2009 International Technical Meeting of The Institute of Navigation, Anaheim, CA, January 2009, pp. 335-340.
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