Results 11 to 20 of about 3,095,615 (291)
INSTANTANEOUS FREQUENCY ESTIMATION USING A LEAST SQUARES TIME-FREQUENCY METHOD
Electrica, 2004 We present a method for estimating the instantaneous frequency of a signal. This method involves the calculation of a time-frequency energy density of the signal, then obtaining an instantaneous frequency estimation from this joint density.
Mahmut ÖZTÜRK, Aydın AKAN
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Leak detection using instantaneous frequency analysis [PDF]
, 2012 Leaking pipes are a primary concern for water utilities around the globe as they compose a major portion of losses. Contemporary interest surrounding leaks is well documented and there is a proliferation of leak detection techniques. Although the reasons
ghazali, mohd fairusham
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Definition Of Instantaneous Frequency On Real Signals
, 2000 Publication in the conference proceedings of EUSIPCO, Tampere, Finland ...
Saliu, Sokol,
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Frequency Domain Repercussions of Instantaneous Granger Causality
Entropy, 2021 Using directed transfer function (DTF) and partial directed coherence (PDC) in the information version, this paper extends the theoretical framework to incorporate the instantaneous Granger causality (iGC) frequency domain description into a single ...
Luiz A. Baccalá, Koichi Sameshima
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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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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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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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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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