Time and Frequency Keeping and its Distribution System at CRL

Michito Imae, Mizuhiko Hosokawa, Yuko Hanado, Kuniyasu Imamura, Atsushi Otsuka, Takao Morikawa

Abstract:	As a national frequency standards laboratory in Japan, Communications Research Laboratory (CRL) is doing research and development work on a primary frequency standard. Besides the primary standard, CRL is in charge of the generation of local UTC, UTC(CRL), and its time and frequency distribution via HF and LF radio signals, telephone line, and computer network. CRL contributes to TAI not only atomic clock data, but also as one of the node laboratories of the international GPS time transfer network of the BIPM. For this purpose CRL is studying the GPS ionospheric measurement system and two-way time transfer using communication satellites. In this paper we will present activities on time and frequency standards at CRL.
Published in:	Proceedings of the 28th Annual Precise Time and Time Interval Systems and Applications Meeting December 3 - 5, 1996 Hyatt Regency Reston Town Center Reston, Virginia
Pages:	51 - 64
Cite this article:	Imae, Michito, Hosokawa, Mizuhiko, Hanado, Yuko, Imamura, Kuniyasu, Otsuka, Atsushi, Morikawa, Takao, "Time and Frequency Keeping and its Distribution System at CRL," Proceedings of the 28th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, December 1996, pp. 51-64.
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