Two Way Time Transfer(TWTT)is used in BDS to synchronize the time between satellite and ground system.Therefore,both Orbit Determination and Time Synchroniz
Laser detection avoid the limitation on cesium clocks' lifespan due to electron multipliers.However,the laser inevitably induces light shift.By measuring th
An improved chi-squared test method used to detect frequency abnormity of atomic clock is presented.This method is independent of choice of reference value,
Each observation station in the VLBI has an independent hydrogen clock.In particular,on rare occasions the phase lock synthesizer loss phase lock on the sig
Although the application of GNSS RTK networks becomes a standard technique in positioning practice,its error analysis is mostly conducted within the baselin