GALILEO: System Requirements and Architectures

R. Lucas, Daniel Ludwig

Abstract:	The Council of Ministers of Transport of the European Union has recently adopted a strategy towards a European-led global navigation satellite system “Galileo”. This strategy foresees the definition of the Galileo system to be completed by end 2000 and the initiation of the in-orbit validation of the system by late 2003. By 2008 at the latest Galileo shall be fully operational. Galileo is to be inter-operable with GPS and an international co-operation for the implementation of the system is being contemplated. Galileo will consist of a MEO (medium Earth orbit) constellation of satellites and a number of regional (e.g. geostationary satellites) and local elements. Two types of signals are to be made available to the Galileo users: Open Access Signals (OAS) and Controlled Access Signals (CAS). This paper presents an outline of the main design drivers and the resulting system architecture. The definition and development of Galileo is to be supported by the European Commission (EC) and the European Space Agency (ESA).
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	2097 - 2102
Cite this article:	Lucas, R., Ludwig, Daniel, "GALILEO: System Requirements and Architectures," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 2097-2102.
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