Title :
Comparison of a ground and a satellite clock by three-way microwave time transfer
Author_Institution :
Inst. fur Hochfrequenztech., Oberpfaffenhofen, Germany
fDate :
8/1/1999 12:00:00 AM
Abstract :
A three-way time transfer system for comparing a satellite clock and a ground clock is described. It eliminates not only distance variations like a two-way system but also ionospheric signal delay by the third way. The accuracy of such a system is limited of course by signal-to-noise ratio but essentially by controlling the equipment delay times
Keywords :
Global Positioning System; atomic clocks; delays; microwave links; synchronisation; Doppler shift; clock comparison; clock synchronisation; delay time; ground clock; ionospheric cancellation; satellite clock; signal-to-noise ratio; three-way microwave time transfer; time comparison; Arithmetic; Clocks; Control systems; Delay effects; Difference equations; Earth; Frequency synchronization; Satellites; Signal to noise ratio; Time measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
