光纤时间频率同步技术及应用  

Fiber-optic time and frequency synchronization technology and its applications

作　　者：陈雨锋 王波[1,2,3] Chen Yufeng;Wang Bo(Department of Precision Instrument,Tsinghua University,Beijing 100084,China;State Key Laboratory of Precision Space-time Information Sensing Technology,Beijing 100084,China;Key Laboratory of Photonic Control Technology(Ministry of Education),Beijing 100084,China;China Ordnance Navigation and Control Technology Research Institute,Beijing 100089,China)

机构地区：[1]清华大学精密仪器系,北京100084 [2]时空信息精密感知技术全国重点实验室,北京100084 [3]光子测控技术教育部重点实验室,北京100084 [4]中国兵器工业导航与控制技术研究所,北京100089

出　　处：《仪器仪表学报》2024年第2期47-62,共16页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(61971259,62171249);科技部重点研发计划(2021YFA1402102);清华大学自主科研计划项目资助。

摘　　要：时间是人类目前测量和复现不确定度指标最高的物理量,代表了人类科技发展的最高水平。光纤时频同步技术经过几十年的发展,目前已广泛应用于量子计量、射电干涉测量、定位导航、现代通信、电力电网、高能物理、大地测量等诸多领域,成为人类社会高效运行的重要支撑。得益于光纤时频同步技术的高可靠性和高稳定度,综合原子时“分布式”和“实时性”这一长期存在的矛盾得到了解决。文章介绍了光纤时频同步技术的发展历史、各技术路径的研究现状,以及基于北京地区光纤时频同步网生成的分布式实时综合原子时。在此基础上,指出光纤时频同步的发展重点正从技术研究转为大规模网络化应用,开展基于光网络的多功能、多应用融合研究,实现一体化通信、感知、计算、测量、控制,将是未来的重要发展趋势。Time is the physical quantity with the best measurement uncertainty at present,representing the highest level of science and technology.After decades of development,fiber-optic time and frequency synchronization(FOTFS)technology has been widely used in many fields such as quantum metrology,radio interferometry,navigation,modern communication,power grid,high-energy physics,geodesy and so on.It has become a vital support for the efficient operation of human society.Thanks to the high reliability and stability of FOTFS technology,the long-standing contradiction between“distribution”and“real-time”of ensemble time scale has been solved.The paper introduces the development history of FOTFS technology and the research status of each technology path.At the same time,a real-time free-running time scale based on the Beijing FOTFS network is also introduced.Based on this foundation,it is pointed out that the development focus of FOTFS is shifting from technical research to large-scale networked applications.Conducting multi-functional and multi-application integrated research based on optical networks,to achieve integrated communication,sensing,computing,measurement,and control,will be an important development trend in the future.

关 键 词：光纤网络 时间同步 频率同步 光载射频 综合原子时 

分 类 号：TH7[机械工程—仪器科学与技术]