Update on Time and Frequency Activities at PTB

Peter Hetzel, Andreas Bauch

Abstract:	The activities in the field of time and frequency metrology pursued at PTB are reviewed. Among the recent milestones have been the development and quasi-continuous operation of a cesium fountain frequency standard, the realization of a free atomic time scale TAF (PTB) based on the fountain results, and the cooperation in international time comparison projects using GPS carrier-phase receivers and TWSTFT in Ku-band and X-band.
Published in:	Proceedings of the 33th Annual Precise Time and Time Interval Systems and Applications Meeting November 27 - 27, 2001 Hyatt Regency Long Beach Long Beach, California
Pages:	321 - 328
Cite this article:	Hetzel, Peter, Bauch, Andreas, "Update on Time and Frequency Activities at PTB," Proceedings of the 33th Annual Precise Time and Time Interval Systems and Applications Meeting, Long Beach, California, November 2001, pp. 321-328.
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