基于光纤双环网的高精度时频同步技术研究

本文介绍了一种基于光纤双环网的时频同步技术设计方法，针对时频设备协同使用时如何获得高精度同步指标这一问题提出了一种设计思路。以系统时间源使用北斗/GPS/GLONASS，本系统同步精度优于5E-13，频率稳定度优于5E-13@1d；以UTC(BIRMM)输出的TOD+1PPS做系统时间源，本系统同步精度优于4E-13，频率稳定度优于6E-14@1d。本方案提出的方法原理简单，系统可根据使用情况进行裁剪，相比卫星双向等手段成本低廉，适合在时频同步领域推广。

Research on Hign Precision Time Frequency Synchronization #br# based on Optical Fiber Double Loop Network

This paper introduces a kind of double loop network based on optical fiber technology in the time and frequency synchronization technology design method.In the light of the problem of how to obtain hign-precision synchronization index when the time frequency equipment is used in coordination ,a design is proposed.Using beidou /GPS/GLONASS as the system time source,the synchronization accuracy of the system is better than 5E-13,and the frequency stability is better than 5E-13@1d.With the TOD+1PPS output by UTC(BIRMM)as the time source of the system,the synchronization accuracy of this system is better than 4E-13 and the frequency stability is better than 6E-14@1d.This method proposed in this paper is simple in principle,the system can be cut according to the actual use.The cost is low relative to TWSTFT and other means.It is suitable for spreading in time frequency synchronization field.