摘要
基于光纤传输的时频同步技术具有高精度、高稳定性和低损耗的优点。近年来光纤时频同步技术发展迅速,新方法、新技术和新应用不断涌现,具有很强的军事应用需求和民用推广前景,系统梳理其发展现状、客观审视其未来发展趋势很有必要。在明确光纤时频同步技术原理与技术特点的基础上,分别介绍了光纤时间同步、频率同步、网络化同步等主要技术的现状,指出地基时频网络建设的重难点。对制约光纤时频同步技术实用化的问题进行了分析,认为商用网络中的远距离高精度传递是限制光纤时频同步技术的难点,也是后续研究需要重点解决的问题。
Time-frequency synchronization technology based on optical fiber transmission has advantages of high accuracy,high stability and low loss.In recent years,optical fiber time-frequency synchronization technology developed rapidly,with the emergence of new methods,new technologies and new applications,and it has strong military application needs and civil promotion prospects too.It is extremely necessary to review its development status and objectively examine its future development trend.On the basis of defining the principle and technical characteristics of optical fiber time-frequency synchronization technology,the current status of optical fiber time synchronization,frequency synchronization and networked synchronization technologies are introduced,the key points in the construction of ground-based time-frequency network are proposed.The problem of restricting the practicality of optical fiber time-frequency synchronization technology is analyzed.It is considered that ultra-longdistance and high precision transmission on commercial networks is the difficulty of restricting optical fiber timefrequency synchronization technology and the key problem to be solved in the future research.
作者
梁益丰
许江宁
吴苗
何泓洋
江鹏飞
Liang Yifeng;Xu Jiangning;Wu Miao;He Hongyang;Jiang Pengfei(College of Electrical Engimeering,Naval University of Engineering,The Chinrere People's Liberution Army,Wahan,Hubei 430083,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2020年第5期37-50,共14页
Laser & Optoelectronics Progress
基金
国家第二代卫星导航重大专项(GFZX0301040303)
国家重点研发计划(2016YFB0501700,2016YFB0501701)
国家自然科学基金(41804076)。
关键词
光纤时频同步
时间传递
授时
地基时频网络
optical fiber time-frequency synchronization
time transfer
time service
ground-based time-frequency network
