Results 251 to 260 of about 125,078 (291)

Measuring accelerometer dynamic range from seismic data using Allan deviation

Geophysical Prospecting, 2018
ABSTRACTWe 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, 2012
Abstract 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, 2002
The 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, S.J. Sherman, J.F. Chang, S.R. Lewis   +3 more
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Implementation of the real-time assessment of dynamic allan deviation and dynamic time deviation

2014 European Frequency and Time Forum (EFTF), 2014
In the paper the realization of the methods enabling real-time computation of dynamic Allan deviation and dynamic time deviation is described. The idea of real-time analysis of timing signals using dynamic approach is described first. Then the main features of the algorithms enabling the analysis and their implementation are presented and discussed.
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Allan deviation measurements of a cryogenic all-sapphire Fabry-Perot reference cavity

Proceedings of 20th Biennial Conference on Precision Electromagnetic Measurements, 2002
An all-sapphire Fabry-Perot cavity is temperature controlled in a cryogenic (/spl sim/5 K) environment. The cavity is used as a frequency reference to stabilise the output of a diode pumped Nd:YAG laser. The expected stability is discussed and Allan Deviation measurements presented.
M. Notcutt, C.T. Taylor, E.K. Wong, A.G. Mann, D.G. Blair   +4 more
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An Algorithm to Estimate the Power Spectral Density From Allan Deviation

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Complex architectures for wireless communications, digital electronics, and space-based navigation interlink several oscillator-based devices such as clocks, transponders, and synthesizers. Estimators characterizing their stability are critical for addressing the impact of random fluctuations (noise) on the overall system performance.
De Marchi, Fabrizio, Plumaris, Michael K., Burt, Eric A., Iess, Luciano   +3 more
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3.3 A 0.51nW 32kHz Crystal Oscillator Achieving 2ppb Allan Deviation Floor Using High-Energy-to-Noise-Ratio Pulse Injection

2020 IEEE International Solid- State Circuits Conference - (ISSCC), 2020
In ultra-low-power crystal oscillators (XOs), the ideal circuit consumes minimum power while disturbing the oscillation as little as possible. In order to achieve sub-nW power consumption, there are three fundamental considerations: the loss in the crystal, the efficiency of energy injection, and the power required to extract oscillation frequency and ...
Li Xu, Taekwang Jang, Jongyup Lim, Kyojin Choo, David Blaauw, Dennis Sylvester   +5 more
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Allan-Deviation Measurements of Gate-Tunable Single Electron Pumps with the Ultrastable Low-Noise Current Amplifier

2018 Conference on Precision Electromagnetic Measurements (CPEM 2018), 2018
We characterized KRISS precision measurement system by measuring the Allan deviation of the quantized current generated by GaAsl AIGaAs gate-tunable electron pumps, where the current was amplified by the ultrastable low-nose current amplifier (ULCA) developed by the PTB.
Myung-Ho Bae, Ye-Hwan Ahn, Changki Hong, Yunchul Chung, Dong-Hun Chae, Mun-Seog Kim, Wan-Seop Kim, Nam Kim   +7 more
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A Mode-Matched Silicon-Yaw Tuning-Fork Gyroscope With Subdegree-Per-Hour Allan Deviation Bias Instability

Journal of Microelectromechanical Systems, 2008
In this paper, we report on the design, fabrication, and characterization of an in-plane mode-matched tuning-fork gyroscope (M2-TFG). The M2-TFG uses two high-quality-factor (Q) resonant flexural modes of a single crystalline silicon mi- crostructure to detect angular rate about the normal axis.
M.F. Zaman, A. Sharma, null Zhili Hao, F. Ayazi   +3 more
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ThêoH: a hybrid, high-confidence statistic that improves on the Allan deviation

Metrologia, 2006
‘Theo1’ (short terminology for ‘theoretical variance #1’) is derived based on, a variance that separates the Allan variance'saveraging time(τ) from itssampling interval(τs), also called ‘stride’, as applied to normalized fractional-frequencyy(t). The τ-length average ofy(t) is denoted, and every permissible squared difference of-values inis averaged ...
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