SAGNAC-Error Calculation in Two-Way Satellite Time and Frequency Transfer

摘要

TWSTFT techniques are employed for time interval measurements of two different atomic clocks or timescales located far apart. There are various methods of time and frequency transfer between timing labs. Among all-time transfer methods, TWSTFT is very precise time transfer method for geographically apart but visible from common GEO satellite stations. In this paper, we have discussed the errors included in the process of TWSTFT and also derived and calculated the mathematical value of the SAGNAC effect delay and the ionospheric delay. Among all the delays, SAGNAC effect delay and the ionospheric delay are considered to be the most complicated in terms of calculation and are responsible for the increased inaccuracy in TWSTFT.