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Proceedings Paper

Precise time and frequency transfer link used for the uncertainty evaluation of Sr. optical lattice clock
Author(s): Michito Imae; Yasuhisa Fujii; Feng-lei Hong; Masao Takamoto; Ryoichi Higashi; Hidetoshi Katori
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Paper Abstract

The recent development of optical frequency standards has been performed quite rapid and the better uncertainty than that of microwave frequency standards will be realized in very near future. We are evaluating a one-dimensional 87Sr optical lattice clock developed and located at the University of Tokyo, Tokyo, by using UTC(NMIJ) generated at NMIJ, Tsukuba. The baseline length between those two sites is about 50 km. We constructed a time and frequency transfer link using GPS carrier phase method for this link. We use GIPSY software and a newly developed one for data analysis. Our developed one works in real time using carrier phase data and broadcast navigation data which are obtained from the carrier phase receivers.

Paper Details

Date Published: 17 September 2007
PDF: 10 pages
Proc. SPIE 6673, Time and Frequency Metrology, 66730G (17 September 2007); doi: 10.1117/12.733479
Show Author Affiliations
Michito Imae, National Metrology Institute of Japan/AIST, CREST, Japan Science and Technology Agency (Japan)
Yasuhisa Fujii, National Metrology Institute of Japan/AIST, CREST, Japan Science and Technology Agency (Japan)
Feng-lei Hong, National Metrology Institute of Japan/AIST, CREST, Japan Science and Technology Agency (Japan)
Masao Takamoto, The Univ. of Tokyo (Japan)
Ryoichi Higashi, The Univ. of Tokyo (Japan)
Hidetoshi Katori, The Univ. of Tokyo (Japan)


Published in SPIE Proceedings Vol. 6673:
Time and Frequency Metrology
R. Jason Jones, Editor(s)

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