Common view time transfer by a GEO navigation satellite

The satellite common view method is a commonly used technique in time transfer. As we known, the satellites are often the MEO satellites which belong to the GNSS, but it is little application for a GEO navigation satellite in common view time transfer. In this paper, the GEO navigation satellite is introduced, then the method of how to use it in common view time transfer is discussed in details. Through the calculation of satellite position, ionospheric delay correction, tropospheric delay correction and relativistic effect correction etc The time differences between the reference time of a pair of stations and satellite clock are obtained, furthermore, the time difference between the two stations can be calculated. After the discussion, a real result of time transfer between two stations in China is given, and the result shows that the precision of the GEO satellite common view is better than that of the GPS common view time transfer.