Autor: |
Guo, Y. C., Wang, B., Wang, F. M., Shi, F. F., Zhang, A. M., Zhu, X., Yang, J., Feng, K. M., Han, C. H., Li, T. C., Wang, L. J. |
Rok vydání: |
2019 |
Předmět: |
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Druh dokumentu: |
Working Paper |
DOI: |
10.1088/1681-7575/ab299d |
Popis: |
In this paper, we propose a real-time free-running time scale based on four remote hydrogen masers. The clocks in the ensemble were scattered around Beijing, connected by urban fiber links using a novel frequency synchronization system. The remote clock ensemble prevents the time scale from potential problems caused by correlation among co-located clocks. Insofar as it is real-time, it fulfills the requirements for applications such as navigation, telecommunications and so on. The free-running time scale is updated every 1200 s, and a disturbance-resistant algorithm makes it robust to fiber link disturbances and clock malfunctions. The results of a continuous experiment over 224 days are reported. The stability of the time scale outperformed any clock in the ensemble for averaging times of more than approximately 10000 s. |
Databáze: |
arXiv |
Externí odkaz: |
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