Interoperability with GPS has been one of the drivers for Galileo definition and design. This paper is dedicated to the timing aspects of the interoperability, related challenges, and solutions. Here, we discuss mainly technical issues; organizational and legal matters have been addressed by US-EU working groups and have been mentioned in the agreement on GPS Galileo cooperation signed by the US and EU sides on 26 June 2004. The offset ...
Under contract to the European Space Agency (ESA), an expert team lead by Kayser-Threde GmbH has elaborated a design concept for the Precise Time Facility (PTF) for Europe's satellite positioning system Galileo. The major purpose of the PTF is to generate, maintain, and distribute Galileo System Time (GST). The PTF is represented by an ensemble of atomic clocks (active H-maser, cesium) with appropriate measurement equipment and time algorithms. In addition, ...
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