Title :
Comparing and evaluating the performance of primary frequency standards: impact of dead time
Author_Institution :
Time & Frequency Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
Comparing high-performance frequency standards often requires making comparisons over displacements in time and/or space. The uncertainties introduced into comparisons made with dead time or with displacements in time are discussed. The estimates of uncertainty are based on the noise characteristics of an ensemble of cavity-tuned hydrogen masers used as a stable frequency reference. Specific examples are given
Keywords :
atomic clocks; frequency standards; masers; measurement uncertainty; random noise; cavity-tuned masers; dead time; displacements in time; flicker noise; fountain stability; frequency comparisons; frequency drift; high-performance frequency standards; hydrogen masers; maser based scale; noise characteristics; performance comparisons; primary frequency standards; random-walk FM; stable frequency reference; time offsets; uncertainties; Frequency conversion; Frequency estimation; Hydrogen; Laboratories; Masers; NIST; Pump lasers; Space technology; Stability; Uncertainty;
Conference_Titel :
Frequency Control Symposium and PDA Exhibition, 2001. Proceedings of the 2001 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-7028-7
DOI :
10.1109/FREQ.2001.956160
