GPS COMMON VIEW BASED PRIMARY REFERENCE SOURCE FOR TELECOMMUNICATIONS NETWORKS

摘要

With the introduction of high-speed networks, today's telecommunications networks require a more accurate primary reference source (PRS) than conventional ones. A PRS synchronized to the national frequency standard (NFS) based on the technique of GPS common view, a powerful means for time and frequency transfer, is proposed in this paper. The proposed PRS achieves performance comparable to the NFS, which has frequency accuracy better than 5x10~(-14). The new approach has been used to provide a synchronization source for the networks of Chunghwa Telecom. Performance results indicate that a PRS with a frequency offset originally of -3x10~(-13) can be improved to 1 x 10~(-14).