Results of the GARDA Galileo Receiver Development and Evolution to Safety-of-Life Receiver Applications

L. Marradi, G. Franzoni, D. Fossati, L. Foglia, V. Gabaglio

Abstract:	GARDA [1] is a project lead by Alcatel Alenia Space Italia (AASI) under contract of the Galileo Joint Undertaking (GJU). In the framework of GARDA, AAS-I has developed a prototype receiver capable of processing the L1, E5a/E5b and E6 Galileo signals in addition to GPS L1. This represents one of the first GPS/Galileo receivers. In developing this prototype receiver, efforts have been made in order to define the architecture of the RF frontend and base-band sections to be as flexible as possible. The aim was to have a modular architecture that could be the basis for future AASI GPS/Galileo receiver products and prepare the way for user receivers to be “ready on the market” when the Galileo system will be operational. The design flexibility also allows to quickly react to the evolution and changes in the Galileo signal specification. In particular, the GARDA design is the basis for the development of a safety-of-life (SoL) receiver within the GJU GIRASOLE project [2]. In addition, GARDA building blocks are the basis for the Galileo receivers that are going to be used within the Galileo Receiver Chain of the Ground Mission Segment Sensor Stations to feed the Galileo Orbit Determination, Integrity and Timing facilities. The receiver has been tested with different test benches using GPS and Galileo signals obtained from single and multi-frequency RF signal simulators developed by Space Engineering and by Spirent Communications. Within the GIRASOLE project of the GJU 2nd call program, the receiver is being extended to provide combined GPS/Galileo navigation and integrity functions for safety-of-life railway, avionics and maritime applications on the L1/E5b frequencies.
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:	1060 - 1068
Cite this article:	Marradi, L., Franzoni, G., Fossati, D., Foglia, L., Gabaglio, V., "Results of the GARDA Galileo Receiver Development and Evolution to Safety-of-Life Receiver Applications," 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. 1060-1068.
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