远程时间传递与溯源方法、装置及体系  

Remote Time Transfer and Traceability Method,Device and System

作　　者：梁坤[1] 方维[2] 顾杨义 陈德好 郝爽雨 杨志强[1] 方占军[1] 张爱敏[1] LIANG Kun;FANG Wei;GU Yangyi;CHEN Dehao;HAO Shuangyu;YANG Zhiqiang;FANG Zhanjun;ZHANG Aimin(National Institute of Metrology,Beijing 100029,China;China Jiliang University,Hangzhou 310018,China;Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]中国计量科学研究院,北京100029 [2]中国计量大学,杭州310018 [3]北京交通大学,北京100044

出　　处：《计量科学与技术》2021年第4期3-13,共11页Metrology Science and Technology

基　　金：国家重点研发计划资助项目(2017YFF0212000);国家质量监督检验检疫总局科技计划项目(2015QK221)。

摘　　要：为解决法定时间量值的远程传递问题,填补可溯源的时间标准及时间计量器具的空白,研究了远程时间溯源方法,参考原子时标国家计量基准(UTC(NIM)),利用GNSS时间频率传递方法,通过驯服铷原子钟、铯原子钟和氢原子钟,研制了远程时间溯源装置NIMDO,基于装置初步构建了远程时间溯源体系。通过多种实验验证,装置在远程端实现了一个高性能的时标,实时与UTC(NIM)驯服同步,相当于在远程端以一定的时间和频率偏差复现了UTC(NIM),超过90%的时间NIMDO与UTC(NIM)的时间偏差优于±10 ns、频率偏差优于±1×10^(-13),在87%以上的情况时间偏差保持在±5 ns内。To solve the problem of remote transmission of legal time measurements and fill the gap of traceable time standards and time-measuring instruments,the remote time traceability method was studied,and the remote time traceability device NIMDO was developed by disciplining rubidium,cesium,and hydrogen atomic clocks with reference to the atomic time national primary standard(UTC(NIM))and using the GNSS time and frequency transfer method,and a remote time traceability system was preliminarily constructed based on the device.Through various experimental verifications,the device achieves a high-performance time scale at the remote end and synchronizes with UTC(NIM)in real-time,which is equivalent to reproducing UTC(NIM)at the remote end with a certain time and frequency deviations,and the time deviation of NIMDO from UTC(NIM)is better than±10 ns and frequency deviation is better than±1×10^(−13)in over 90%of the time,and the time deviation stays within±5 ns in more than 87%of the cases.

关 键 词：时间频率计量 守时 时间频率传递 GNSS时间频率传递 驯服 时标 远程时间溯源 溯源体系 

分 类 号：TB939[一般工业技术—计量学]