一种基于单频授时接收机的纳秒级时间同步方法研究
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摘要
针对未来通信同步网等需要低成本、高精度、大范围时间同步的应用需求,研究了基于单频接收机进行卫星共视比对的可行性。提出了一种基于单频授时接收机的标准时间远程复现方法,并最终实现了一套低成本的标准时间复现设备,能提供与标准时间小于10ns(3σ)的时间偏差。该设备可用于组建时间同步网,保证网内节点间时差小于20ns,结合多级分层传递组网策略,理论上可以建立覆盖全球的时间同步网。
Aiming at the high-precision, low-cost and large-scale application requirements such as future communication synchronous network, the feasibility of satellite common-view based on single-frequency receiver is studied. A national standard time(UTC) of NTSC(National Time Service Centre) remote generated method based on single-frequency timing receiver is proposed in this paper. A set of low cost UTC(NTSC) signal generator has been realized, which can realize time deviation less than 10 ns(3σ) between arbitrary node and UTC(NTSC). When the instrument is used to form a time synchronization network, the time deviation will be less than 20 ns between any nodes in the network. Combined with the layered transmission strategy of the network, the synchronous network can also cover the whole world.
Aiming at the high-precision, low-cost and large-scale application requirements such as future communication synchronous network, the feasibility of satellite common-view based on single-frequency receiver is studied. A national standard time(UTC) of NTSC(National Time Service Centre) remote generated method based on single-frequency timing receiver is proposed in this paper. A set of low cost UTC(NTSC) signal generator has been realized, which can realize time deviation less than 10 ns(3σ) between arbitrary node and UTC(NTSC). When the instrument is used to form a time synchronization network, the time deviation will be less than 20 ns between any nodes in the network. Combined with the layered transmission strategy of the network, the synchronous network can also cover the whole world.
引文
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[2] 陈瑞琼,刘娅,李孝辉,等.基于改进的卫星共视法的远程时间比对研究[J].仪器仪表学报,2016,37(4):757-759.Chen Ruiqiong,Liu Ya,Li Xiaohui,et al.Study on remote time comparison based on improved satellite common-view method[J].Chinese Journal of Scientific Instrument,2016,37(4):757-759(in Chinese).
[3] Zhang P,Xu C,Hu C,et al.Time scales and time transformations among satellite navigation systems[C]// Proceedings of 2012 China Satellite Navigation Conference(CSNC).Springer,Berlin,Heidelberg,2012:491-502.
[4] 江志恒.GPS全视法时间传递回顾与展望[J].宇航计测技术,2007(S1):53-71.Jiang Zhiheng.Review and perspective of GPS all in view time transfer[J].Journal of Astronautic Metrology and Measurement,2007(S1):53-71(in Chinese).
[5] 王力军.超高精度时间频率同步及其应用[J].物理,2014,43(6):360-363.Wang Lijun.High precison synchronization of time and frequency and its applications[J].Physics,2014,43(6):360-363(in Chinese).
[6] 左建生,董莲,陆福敏,等.时间频率远程校准系统的设计与实现[J].电子测量技术,2010,33(4):1-3.Zuo Jiansheng,Dong Lian,Lu Fumin,et al.Design and realization of time and frequency remote calibration system[J].Electronic Measurement Technology,2010,33(4):1-3(in Chinese).
[7] MESIT.GTR55-Time and frequency transfer GNSS receiver[Z].Operating Instructions.
[8] 余明,郭际明,过静珺.GPS电离层延迟Klobuchar模型与双频数据解算值的比较与分析[J].测绘通报,2004(6):5-8.Yu Ming,Guo Jiming,Guo Jingjun.Ionospheric delay values from Klobuchar model and dual frequency measurements:Comparison and analysis[J].Bulletin of Surveying and Mapping,2004(6):5-8(in Chinese).
[9] 胡伍生,高成发.GPS测量原理及其应用[M].北京:人民交通出版社,2002.Hu Wusheng,Gao Chengfa.GPS measurement principle and its application[M].Beijing:China Communications Press,2002(in Chinese).
[10] 袁运斌,霍星亮,张宝成.近年来我国GNSS电离层延迟精确建模及修正研究进展[J].测绘学报,2017,46(10):1364-1378.Yuan Yunbin,Huo Xingliang,Zhang Baocheng.Research progress of precise models and correction for GNSS ionospheric delay in China over recent years[J].Acta Geodaetica et Cartographica Sinica,2017,46(10):1364-1378(in Chinese).
[11] 王宁波,袁运斌,李子申,等.不同NeQuick电离层模型参数的应用精度分析[J].测绘学报,2017,46(4):421-429.Wang Ningbo,Yuan Yunbin,Li Zishen,et al.Performance analysis of different NeQuick ionospheric model parameters[J].Acta Geodaetica et Cartographica Sinica,2017,46(4):421-429(in Chinese).
[12] 陈学军,赵军,王西京,等.几种电离层模型折射修正效果检验[J].飞行器测控学报,2016,35(3):181-184.Chen Xuejun,Zhao Jun,Wang Xijing,et al.Validating effects of ionospheric delay correction models[J].Journal of Spacecraft TT&C Technology,2016,35(3):181-184(in Chinese).
[13] 冯晓超,刘魁星,高帅,等.北斗监测接收机设备时延性能检测评估[J].现代导航,2018,9(4):240-245.Feng Xiaochao,Liu Kuixing,Gao Shuai,et al.Test and evaluation technique to equipment time-delay performance of BeiDou monitor receiver[J].Modern Navigation,2018,9(4):240-245(in Chinese).
[14] 朱峰,李孝辉,张慧君,等.基于钟驾驭模式的定时接收机绝对校准[J].仪器仪表学报,2014,35(9):1946-1954.Zhu Feng,Li Xiaohui,Zhang Huijun,et al.Absolute calibration of timing receiver based on clock-steering model[J].Chinese Journal of Scientific Instrument,2014,35(9):1946-1954(in Chinese).
[15] 陈婧亚,许龙霞,李孝辉.一种共视接收机相对时延校准方法[J].时间频率学报,2017,40(1):19-26.Chen Jingya,Xu Longxia,Li Xiaohui.A method for calibrating relative delay of common-view receivers[J].Journal of Time and Frequency,2017,40(1):19-26(in Chinese).