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Impact of new frequency standards on the international time scales

Published online by Cambridge University Press:  21 October 2010

E. Felicitas Arias
Affiliation:
International Bureau of Weights and Measures, Sèvres, France email: farias@bipm.org Associated astronomer at the Paris Observatory, Paris, France
Gianna Panfilo
Affiliation:
International Bureau of Weights and Measures, Sèvres, France email: farias@bipm.org
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Abstract

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The reference time scales maintained at the International Bureau of Weights and Measures (BIPM) are constructed with data from industrial clocks and primary frequency standards operated in national metrology laboratories and observatories world-wide distributed. Clocks are compared making use of techniques of time transfer between remote sites. The algorithm of calculation relies on clock weighting and clock frequency prediction. We briefly present hereafter the influence of some clocks on the scales, as well as the possibilities for improvement.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2010

References

Audoin, C & Guinot, B. 2001, The measurement of time, Cambridge University PressGoogle Scholar
Bureau International de l'Heure 1974, BIH Annual Report for 1973, Observatoire de ParisGoogle Scholar
Bureau International des Poids et Mesures 2009, BIPM Annual Report on Time Activities for 2008, 26Google Scholar
Gill, P. & Rihele, F. 2006, Proc. 20th EFTF, 282Google Scholar
Guinot, B. & Thomas, C. 1988, Annual Report of the BIPM Time Section, 1, D1D22Google Scholar
Panfilo, G. & Arias, E. F. 2009, Special issue of UFFC, submittedGoogle Scholar
Petit, G. 2003, Proc. 35th PTTI, 307Google Scholar
Petit, G. 2008, Proc. 7th Symposium on Freqency standards and metrology, in pressGoogle Scholar
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