Design of the Galileo Precise Time Facility (PTF)

The current paper gives an overview on the present design baseline of the precise time facility (PTF) for Galileo. The major task of the PTF is to generate and maintain Galileo system time (GST). The current design has been worked out during Galileo phase CO by a European team of experts and provides viable solutions for most of the requirements of this key element of Galileo.