Title :
Comparison of Frequency Standards Used for TAI
Author :
Petit, G. ; Panfilo, Gianna
Author_Institution :
Bur. Int. des Poids et Mesures, Sèvres, France
Abstract :
In this paper, we study the performance of the ensemble of high-accuracy primary frequency standards (PFSs) that ensure the accuracy of International Atomic Time (TAI). We analyze the statistics of the results of PFS evaluations compared with their stated uncertainties, and we discuss different components of the uncertainty. We also consider the use of reporting evaluations of secondary frequency standards and how they could contribute to TAI.
Keywords :
atomic clocks; frequency standards; measurement uncertainty; International Atomic Time; TAI accuracy; high-accuracy PFS ensemble performance evaluation; high-accuracy primary frequency standards; measurement uncertainty; secondary frequency standards; Accuracy; Atomic clocks; Standards; Systematics; Time frequency analysis; Uncertainty; Accuracy; International Atomic Time (TAI); TT(BIPM); frequency standards; timescale;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2012.2228749
