Improvements of TA(SU) and UTC(SU) During Last Year

Igor Yu. Blinov, Alexander I. Boyko,  Nikolai B. Kosheliaevskii and Olga Yu. Sokolova

Abstract:	Perhaps the most significant changes in operational activity of the VNIIFTRI TA(SU) and UTC(SU) time keeping during the last year was implementation continuously operating Rb fountain standards. Despite we failed to involve in full the whole ensemble of Rb fountains even separate instruments supported considerably time scale maintenance. As a result TA(SU) long term stability was improved up to level ?y(?) ~2×10-16 for ??1 month. Basing on high stable TA(SU) we succeeded to reach RMS difference UTC-UTC(SU) < 2 ns, the result comparable to that for such world leading la-boratories as PTB and USNO. The presentation will deliver particular intermediate results and show further possible improvements.
Published in:	Proceedings of the 50th Annual Precise Time and Time Interval Systems and Applications Meeting January 28 - 31, 2019 Hyatt Regency Reston Reston, Virginia
Pages:	62 - 67
Cite this article:	Blinov, Igor Yu., Boyko, Alexander I., Kosheliaevskii,  Nikolai B., Sokolova, Olga Yu., "Improvements of TA(SU) and UTC(SU) During Last Year," Proceedings of the 50th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, January 2019, pp. 62-67. https://doi.org/10.33012/2019.16766
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