Results 31 to 40 of about 75,598 (299)
Signal-adaptive evolutionary spectral analysis using instantaneous frequency estimation
, 2021 In this paper we present a signal-adaptive evolutionary spectrum estimation method based on the discrete evolutionary transform (DET). The DET provides a representation for non-stationary signals and a time-frequency kernel that permits us to obtain the ...
Akan, AYDIN
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, 2001 In this paper an instantaneous frequency estimator (IFE) of a discrete-time base band complex signal is considered. The IFE is built around one-band, maximally flat linear-phase FIR filters, which are used for differentiating and delaying Cartesian ...
Cain, G.D. +3 more
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A Demodulation Model of Dynamic Low-Finesse Fabry-Perot Cavity Based on the Instantaneous Frequency
IEEE Access, 2020 If the measurand changes during the spectrum acquisition process, it easily leads to the failure of the classic demodulation algorithms of low-finesse optical fiber Fabry-Perot (FP) sensors. To address this problem, a novel demodulation model is proposed
Wei Zhang +4 more
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Kernel estimation of the instantaneous frequency [PDF]
IEEE Transactions on Signal Processing, 1994 We consider kernel estimators of the instantaneous frequency of a slowly evolving sinusoid in white noise. The expected estimation error consists of two terms. The systematic bias error grows as the kernel halfwidth increases while the random error decreases.
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IEEE Open Journal of Instrumentation and MeasurementIn vibration-based condition monitoring (VBCM) of rotating machinery, bearing defects typically induce amplitude and frequency modulations, making joint instantaneous amplitude–frequency analysis effective for distinguishing healthy from abnormal ...
Sulaiman Aburakhia +3 more
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Method of estimation of frequency variation relying on estimation of shift of spectral peaks
Системный анализ и прикладная информатика, 2021 Problem of estimation of variated frequency of components of polyharmonic signals has been arose. Three-dimensional time-frequency representation of signals is usually used to resolve this problem.
D. A. Kechik +2 more
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Heart Rate Variability Characterization Using a Time-Frequency Based Instantaneous Frequency Estimation Technique [PDF]
, 2006 In this paper, a new method for characterizing the newborn heart rate variability (HRV) is proposed. The central of the method is the newly proposed technique for instantaneous frequency (IF) estimation specifically designed for nonstationary ...
M. Mesbah +11 more
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Instantaneous Frequency Estimation By Group Delay Attractors And Instantaneous Frequency Attractors
, 2014 Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal ...
Soo-Chang Pei, Shih-Gu Huang
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Use of the Cross Wigner-Ville Distribution for Estimation of Instantaneous Frequency
, 1993 This correspondence presents an iterative instantaneous frequency (IF) estimation scheme in which successive IF estimates are obtained from the peak of the cross Wigner-Ville distribution (XWVD) using a reference signal synthesized from an initial IF ...
Oshea, P +3 more
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, 2002 An adaptive approach to the estimation of the instantaneous frequency (IF) of nonstationary mono- and multicomponent FM signals with additive Gaussian noise is presented. The IF estimation is based on the fact that quadratic time-frequency distributions (
Boashash, Boualem +3 more
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