Results 11 to 20 of about 90,189 (301)
Instantaneous Frequency Estimation Using Stochastic Calculus and Bootstrapping [PDF]
EURASIP Journal on Advances in Signal Processing, 2005 Stochastic calculus methods are used to estimate the instantaneous frequency of a signal. The frequency is modeled as a polynomial in time. It is assumed that the phase has a Brownian-motion component. Using stochastic calculus, one is able to develop a
Abutaleb A
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Ideal instantaneous frequency. [PDF]
, 2022 Ideal instantaneous frequency.
Xingcheng Han (9565324) +3 more
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Sensors, 2020 It is proposed a novel instantaneous frequency estimation technology, multi-generalized demodulation transform, for non-stationary signals, whose true time variations of instantaneous frequencies are unknown and difficult to extract from the time ...
Dezun Zhao +3 more
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Energies, 2023 Processing physical quantities into an indirect signal is a standard method of transferring information about the measured quantity to the master system, which analyzes the data obtained from the acquisition system.
Dariusz Świsulski, Piotr Warda
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Recasting the (Synchrosqueezed) Short-Time Fourier Transform as an Instantaneous Spectrum
Entropy, 2022 In a previous work, we proposed a time-frequency analysis called instantaneous spectral analysis (ISA), which generalizes the notion of the Fourier spectrum and in which instantaneous frequency is utilized to the fullest extent.
Steven Sandoval, Phillip L. De Leon
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On an instantaneous frequency estimator with FIR filters having maximally flat frequency response error magnitude [PDF]
, 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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An Instantaneous Frequency Identification Algorithm for Time-Varying Frequency Signals
IEEE Access, 2019 A high-precision instantaneous frequency (IF) identification algorithm is proposed in this paper. The algorithm is based on the relationship between the signal phase and time, and uses Taylor's expansion to parameterize the time-varying frequency. It can
Li Xiaocong, Meng Xuanren
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Fluctuations in instantaneous frequency predict alpha amplitude during visual perception. [PDF]
Nat Commun, 2017 Rhythmic neural activity in the alpha band (8–13 Hz) is thought to have an important role in the selective processing of visual information. Typically, modulations in alpha amplitude and instantaneous frequency are thought to reflect independent ...
Nelli S +3 more
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Bivariate Instantaneous Frequency and Bandwidth [PDF]
IEEE Transactions on Signal Processing, 2010 The generalizations of instantaneous frequency and instantaneous bandwidth to a bivariate signal are derived. These are uniquely defined whether the signal is represented as a pair of real-valued signals, or as one analytic and one anti-analytic signal.
Jonathan M. Lilly, Sofia C. Olhede
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Applied Sciences, 2021 Synchrosqueezing transform (SST) can effectively improve time-frequency precision and resolution by squeezing time-frequency spectra via instantaneous frequencies, and it has been applied in many diverse disciplines; however, the precision of estimated ...
Yong Li, Gulan Zhang
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