The New Generation System of Japan Standard Time at NICT | Zendy

Yuko Hanado | Zendy; K. Imamura | Zendy; Noboru Kotake | Zendy; Fumimaru Nakagawa | Zendy; Yoshiyuki Shimizu | Zendy; Ryo Tabuchi | Zendy; Y. Takahashi | Zendy; Mizuhiko Hosokawa | Zendy; Takao Morikawa | Zendy

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The New Generation System of Japan Standard Time at NICT

Author(s) -

Yuko Hanado,

K. Imamura,

Noboru Kotake,

Fumimaru Nakagawa,

Yoshiyuki Shimizu,

Ryo Tabuchi,

Y. Takahashi,

Mizuhiko Hosokawa,

Takao Morikawa

Publication year - 2008

Publication title -

international journal of navigation and observation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.176

H-Index - 18

eISSN - 1687-6008

pISSN - 1687-5990

DOI - 10.1155/2008/841672

Subject(s) - redundancy (engineering) , reliability (semiconductor) , computer science , aerospace engineering , electrical engineering , engineering , physics , reliability engineering , power (physics) , quantum mechanics

NICT has completed a set of major upgrades in its systems for the realization of Japan standard time. One of the most significant changes is the introduction of hydrogen masers as signal sources for UTC (NICT) instead of Cs atomic clocks. This greatly improves the short-term stability of UTC (NICT). Another major change is the introduction of a newly developed 24-channel dual-mixer-time-difference system (DMTD) as the main tool for measurements. The reliability of the system is also improved by enhanced redundancy and monitoring systems. The new JST system has been in regular operation since February 2006

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