Study and development of a New GNSS receiver for time and frequency transfer

Time and frequency transfer techniques based on GPS and GLONASS were studied. On the basis of Topcon GNSS receiver module, one new type of GNSS time and frequency transfer receiver named NIMTFGNSS-1 has been developed and its scheme has been accounted for. Compared with several popular GPS time and frequency transfer receivers made aboard in the world by the common clock difference experiments and the long baseline experiments, the performance of the receiver has been tested and verified. Its time and frequency transfer noise level can match those of the several commercial receivers and the time stabilities from the GPS code and carrier phase results in the common clock difference experiments using two NIMTFGNSS-1 receivers during a few days are separately within 1 ns and 100 ps and the GLONASS code results is with 4 ns.