Timing a national telecommunications network using GPS

Details Timing a national telecommunications network using GPS Timing a national telecommunications network using GPS

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.340..493b&link_type=abstract

In ESA, Frequency and Time Forum p 493-496 (SEE N93-24978 09-70)

Computer Science

Performance

2

Clocks, Communication Networks, Global Positioning System, Pulse Communication, Synchronism, Time Measurement, Crystal Oscillators, Performance Tests, Rubidium, Time

Scientific paper

The use of signals from the Global Positioning System (GPS) to synchronize national telecommunications networks is addressed. The GPS based system, termed a Primary Reference Clock (PRC), employs a GPS receiver providing long term timing accuracy along with duplicated disciplined rubidium oscillators providing short term (one day) stability. The PRC system produces a digital signal used to synchronize a master clock in the node which in turn produces a signal that is used to synchronize all other clocks in the node, and distributed on a dedicated digital basis to all neighboring nodes. By use of monitoring equipment at each PRC, the performance of the master clock at every network node will be verified against the PRC signal. For the first time, a national telecommunications network is monitored and verified to be performing to a precision better than existing international standards.

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