Reference Signal Distribution for the ACES Microwave Link Ground Terminal at SYRTE

This paper presents the distribution system providing the UTC(OP) time and frequency reference signals to the microwave time transfer ground terminal (MWL-G T) of the Atomic Clock Ensemble in Space mission (ACES) at SYRTE. UTC(OP) is generated in the first floor of the building B. The MWL-G T will be installed on the top of the building A inside the campus of Observatoire de Paris, which offers the clearest field of view of the ISS passes. An ensemble of 6 optical fibers and coaxial cables installed between the two locations allows to transmit and monitor the reference signals and to calibrate the delays.