Remote Time Transfer and Traceability Method, Device and System

LIANG Kun; FANG Wei; GU Yangyi; CHEN Dehao; HAO Shuangyu; YANG Zhiqiang; FANG Zhanjun; ZHANG Aimin

doi:10.3969/j.issn.2096-9015.2021.04.01

Volume 65 Issue 4

Apr. 2021

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Article Navigation > Metrology Science and Technology > 2021 > 65(4): 3-13

LIANG Kun, FANG Wei, GU Yangyi, CHEN Dehao, HAO Shuangyu, YANG Zhiqiang, FANG Zhanjun, ZHANG Aimin. Remote Time Transfer and Traceability Method, Device and System[J]. Metrology Science and Technology, 2021, 65(4): 3-13. doi: 10.3969/j.issn.2096-9015.2021.04.01

Citation:

LIANG Kun, FANG Wei, GU Yangyi, CHEN Dehao, HAO Shuangyu, YANG Zhiqiang, FANG Zhanjun, ZHANG Aimin. Remote Time Transfer and Traceability Method, Device and System[J]. Metrology Science and Technology, 2021, 65(4): 3-13. doi: 10.3969/j.issn.2096-9015.2021.04.01

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Remote Time Transfer and Traceability Method, Device and System

doi: 10.3969/j.issn.2096-9015.2021.04.01

1.
National Institute of Metrology, Beijing 100029, China
2.
China Jiliang University, Hangzhou 310018, China
3.
Beijing Jiaotong University, Beijing 100044, China

Available Online: 2021-04-15
Publish Date: 2021-04-15

Abstract

Abstract

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.
- time and frequency metrology,
- timekeeping,
- time and frequency transfer,
- GNSS time and frequency transfer,
- discipline,
- time scale,
- remote time traceability,
- traceability system

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References(14)

References

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