Study on the Effect of Temperature on the Equipment Delay of Two-way Satellite Time and Frequency Transfer

摘要

Two-way Satellite Time and Frequency Transfer (TWSTFT) is one of the most important ways to achieve high-precision synchronization between stations. In the TWSTFT, the equipment delay changes with temperature. So the equipment delay caused by TWSTFT transmission and reception equipment is not easy to calibrate, which is the most important factor affecting the accuracy of time synchronization between stations. In this paper, the influence of temperature on the delay of the modern and whole device of TWSTFT were studied. The experimental results show that the indoor modern is not sensitive to temperature, the negative temperature coefficient is about 6ps/°C; the negative temperature coefficient of whole TWSFTF equipment delay difference is about 18ps/°C.