Because of the accuracy and cost-effectiveness, GPSDO timing system has been the synchronization basis of modern digital system network and communication network. GPSDO timing system, however, could not accurately present the current synchronization performance. So it is inadequate to a distributed measurement system. In this paper the GPS Common-View Disciplined Oscillator timing system designed to exclude the internal timing error factors of GPS receiver is proposed. The timing accuracy of the system is much better than the performance of conventional GPSDO timing system. Test results are reported in this paper.

Keywords:  time and frequency transfer, synchronization, common-view