Title :
Hydrogen maser ensemble performance and characterization of frequency standards
Author :
Parker, Thomas E.
Author_Institution :
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
The performance of a post-processed clock ensemble dominated by active, cavity-tuned, hydrogen masers has been evaluated. The ensemble has an average frequency drift of less than ±3×10-15 per year, and an Allan deviation less than 1×10-15 for τ between 4 hours and 100 days. This ensemble has been used to help characterize the frequency stability of a number of commercially available, high performance frequency standards
Keywords :
atomic clocks; cavity resonators; frequency stability; frequency standards; hydrogen neutral atoms; tuning; Allan deviation; H; H maser ensemble performance; active cavity-tuned masers; average frequency drift; commercially available high performance frequency standards; frequency stability; frequency standards; high performance frequency standards; post-processed clock ensemble; Clocks; Frequency conversion; Frequency estimation; Government; Hydrogen; Masers; NIST; Performance evaluation; Protection; Stability;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.840736
