The development of multi-channel GPS time transfer receiver

Accurate time metrology depends mainly on the performance of the frequency standards used, the quality of the time and frequency synchronization. GPS common-view hasbeen the principal technique for remote time and frequency comparison since 1990s. The NTSCGPS-1, a multi-channel GPS time transfer receiver developed in NTSC (National Time Service Center) using VP Oncore GPS OEM board and GT200 time interval counter is introduced in this paper. Some results of common-view comparison using NTSCGPS-1 and data analysis have shown that the NTSCGPS-1 receiver has the same noise level as the GPS time transfer receivers used nowadays all over the world.