DocumentCode
2586953
Title
Recent improvements in the performance of the NIST AT1 time scale
Author
Parker, Thomas E. ; Levine, Judah
Author_Institution
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fYear
1996
fDate
5-7 Jun 1996
Firstpage
1131
Lastpage
1136
Abstract
The recent addition of new commercial high performance frequency standards to the NIST AT1 time scale has resulted in significant improvements in the performance of the scale. The frequency stability of the scale at one day has increased by a factor of 2 to 4×10-15 and the stability at 100 days has improved to approximately 1×10-15. As a result UTC(NIST) has been kept within 50 ns of UTC for the last year. Further improvements are anticipated as more high performance clocks are added to the ATI ensemble
Keywords
atomic clocks; frequency measurement; frequency stability; masers; measurement standards; time measurement; Cs; Cs frequency standards; H; H masers; NIST AT1 time scale; UTC; commercial high performance frequency standards; frequency stability; high performance clocks; performance; Clocks; Frequency conversion; Frequency measurement; Hardware; Hydrogen; Masers; Measurement standards; NIST; Stability; Time measurement;
fLanguage
English
Publisher
ieee
Conference_Titel
Frequency Control Symposium, 1996. 50th., Proceedings of the 1996 IEEE International.
Conference_Location
Honolulu, HI
Print_ISBN
0-7803-3309-8
Type
conf
DOI
10.1109/FREQ.1996.560304
Filename
560304
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