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Real-time assessment of dynamic Allan deviation and dynamic time deviation
2012 European Frequency and Time Forum, 2012In this paper the methods enabling real-time assessment of dynamic Allan deviation and dynamic time deviation are presented. The idea of real-time analysis of timing signals using dynamic approach is described first. Then the algorithms of real-time computation of dynamic parameters are presented.
Andrzej Dobrogowski, Michal Kasznia
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TheoH and allan deviation as power-law noise estimators
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2007A spectral interpretation using the frequency sensitivity of the Allan variance (Avar) and Thêo-Hybrid (ThêoH) is used to determine falpha noise, or "power-law noise." ThêoH has narrower chi-square confidence than Avar; consequently, ThêoH provides significantly better determination of falpha noise types at long term.
Jennifer A, McGee, David A, Howe
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International Journal of Computers and Applications, 2008
Time and frequency characterization of precision clocks and oscillators is important in maintaining time and frequency standards. The recent preference has been for the time domain signal characterization of clocks, and several performance measures of clocks and oscillators are defined in ITU-T Recommendation G.810.
M. Li, C.-S. Liao, J.-K. Hwang
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Time and frequency characterization of precision clocks and oscillators is important in maintaining time and frequency standards. The recent preference has been for the time domain signal characterization of clocks, and several performance measures of clocks and oscillators are defined in ITU-T Recommendation G.810.
M. Li, C.-S. Liao, J.-K. Hwang
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Analysis of Sensors Noise Performance Using Allan Deviation
2019 IEEE XXVIII International Scientific Conference Electronics (ET), 2019The paper presents the noise analysis of different sensor types using Allan Variance (AV). Compared to the conventional variance that assesses the variation around the mean value of the aggregate data surveyed, AV estimates variations by averaging measurements for different periods.
Marin B. Marinov +3 more
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Degrees of Freedom for Allan Deviation Estimates of Multiple Clocks
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016The three-cornered-hat (TCH) technique is used frequently in the timing community to estimate the stability of single frequency standards (clocks) when the only measurement data available are paired differences. In previous work, we presented an analytic method to estimate the reduced degrees of freedom produced when using the TCH estimation technique.
Paul A, Koppang, Christopher R, Ekstrom
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Multi-Source Maximum Likelihood Modified Allan Deviation Estimation
2020 Joint Conference of the IEEE International Frequency Control Symposium and International Symposium on Applications of Ferroelectrics (IFCS-ISAF), 2020The familiar “tri-cornered hat” method is sometimes used to compute ensemble-relative ADEV values for each of three reference oscillators, superficially independent of any particular reference. When one of the three oscillators is distinctly more stable, the tri-cornered had algorithm tends to give a poor estimate – estimates of AVAR may be negative ...
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Proceedings International Symposium on Parallel Architectures, Algorithms and Networks. I-SPAN 2000, 2000
Time and frequency characterization of precision clocks and oscillators is an important task in the maintenance of time and frequency standards. Recently, time domain signal characterization of clocks is generally preferred and several performance measures of clocks and oscillators are defined in ITU-T Recommendation G.810.
null Mingfu Li +2 more
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Time and frequency characterization of precision clocks and oscillators is an important task in the maintenance of time and frequency standards. Recently, time domain signal characterization of clocks is generally preferred and several performance measures of clocks and oscillators are defined in ITU-T Recommendation G.810.
null Mingfu Li +2 more
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Measuring accelerometer dynamic range from seismic data using Allan deviation
Geophysical Prospecting, 2018ABSTRACTWe propose a new approach for calculating the dynamic range of an accelerometer based on an Allan deviation analysis of production seismic data. This test is intended as a field audit technique and does not require an unconditioned dataset from a low‐noise environment.
Matt McDonald, Patrik Stigborg
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Allan deviation analysis of financial return series
Physica A: Statistical Mechanics and its Applications, 2012Abstract We perform a scaling analysis for the return series of different financial assets applying the Allan deviation (ADEV), which is used in the time and frequency metrology to characterize quantitatively the stability of frequency standards since it has demonstrated to be a robust quantity to analyze fluctuations of non-stationary time series ...
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Single-chip surface micromachined integrated gyroscope with 50°/h Allan deviation
IEEE Journal of Solid-State Circuits, 2002The design principles of a mass-produced surface micromachined gyroscope are described. The device is integrated on a single 3 mm/spl times/3 mm chip with a 3-/spl mu/m BiCMOS process. It has a 4-/spl mu/m-thick polysilicon structure, 5-V 6-mA supply, 12.5-mV//spl deg//S sensitivity, 10 000:1 dynamic range, 30 000-gee shock survival, and -55/spl deg/C ...
J.A. Geen +3 more
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