Journal ArticleDOI
Atomic timekeeping and the statistics of precision signal generators
James A. Barnes
- Vol. 54, Iss: 2, pp 207-220
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TLDR
In this paper, a detailed analysis of the calibration procedure showed that the third finite difference of the phase is closely related to the clock errors and that quartz crystal oscillators exhibit a "flicker" or |ω|-1type of noise modulating the frequency of the oscillator.Abstract:
Since most systems that generate atomic time employ quartz crystal oscillators to improve reliability, it is essential to determine the effect on the precision of time measurements that these oscillators introduce. A detailed analysis of the calibration procedure shows that the third finite difference of the phase is closely related to the clock errors. It was also found, in agreement with others, that quartz crystal oscillators exhibit a "flicker" or |ω|-1type of noise modulating the frequency of the oscillator. The method of finite differences of the phase is shown to be a powerful means of classifying the statistical fluctuations of the phase and frequency for signal generators in general. By employing finite differences it is possible to avoid divergences normally associated with flicker noise spectra. Analysis of several cesium beam frequency standards have shown a complete lack of the |ω|-1type of noise modulation.read more
Citations
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Journal ArticleDOI
Statistics of atomic frequency standards
TL;DR: In this paper, a theoretical analysis of the relationship between the expectation value of the standard deviation of the frequency fluctuations for any finite number of data samples and the infinite time average value of a standard deviation is presented.
Journal ArticleDOI
Time and Frequency (Time-Domain) Characterization, Estimation, and Prediction of Precision Clocks and Oscillators
TL;DR: A tutorial review of some time-domain methods of characterizing the performance of precision clocks and oscillators is presented, and both the systematic and random deviations are considered.
Book
Characterization of Frequency Stability
J.A. Barnes,Andrew R. Chi,Leonard S. Cutler,Daniel J. Healey,D. B. Leeson,Thomas E. McGunigal,James A. Mullen,Warren L. Smith,Richard L. Sydnor,R. F. C. Vessot,Gernot M. R. Winkler +10 more
TL;DR: In this article, the spectral density S y (f) of the function y(t) where the spectrum is considered to be one-sided on a per hertz basis is defined.
ReportDOI
Handbook of frequency stability analysis
TL;DR: The National Institute of Standards and Technology (NIST) as discussed by the authors was established by Congress to assist industry in the development of technology needed to improve product quality, to modernize manufacturing processes, to ensure product reliability, and to facilitate rapid commercialization of products based on new scientific discoveries.
Journal ArticleDOI
Some aspects of the theory and measurement of frequency fluctuations in frequency standards
Leonard S. Cutler,C. L. Searle +1 more
TL;DR: In this article, the effects of finite observation time on the frequency and phase stability of a servo-controlled oscillator with respect to a given quartz oscillator and an atomic reference are analyzed.
References
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Journal ArticleDOI
An Introduction to Fourier Analysis and Generalized Functions.
R. A. Kunze,M. J. Lighthill +1 more
TL;DR: The theory of generalised functions and their Fourier transforms is discussed in this paper. But the analysis of Fourier transform is limited to the case of generalized functions, and it is not suitable for generalised function analysis.
Journal ArticleDOI
Some aspects of the theory and measurement of frequency fluctuations in frequency standards
Leonard S. Cutler,C. L. Searle +1 more
TL;DR: In this article, the effects of finite observation time on the frequency and phase stability of a servo-controlled oscillator with respect to a given quartz oscillator and an atomic reference are analyzed.
Journal ArticleDOI
Spectrum analysis of extremely low frequency variations of quartz oscillators
W.R. Attkinson,L. Fey,J. Newman +2 more
Journal ArticleDOI
The Performance and Capability of Cesium Beam Frequency Standards at the National Bureau of Standards
R. E. Beehler,D. J. Glaze +1 more
TL;DR: In this article, a new cesium standard, NBS III with an interaction length of 3.66 meters is presented, which has demonstrated an improved precision of 1 × 10-13 over 2 hours and an accuracy of ±5 × 10 -123?.
Journal ArticleDOI
A Comparison of Direct and Servo Methods for Utilizing Cesium Beam Resonators as Frequency Standards
TL;DR: In this paper, the dependability, precision, and accuracy of the servo-derived measurements have been compared with the corresponding figures for the more direct manual method, which has significant advantages with respect to convenience of operation and measurement precision.