Results 21 to 30 of about 1,244,073 (295)
Axioms, 2013 The properties of the Gabor and Morlet transforms are examined with respect to the Fourier analysis of discretely sampled data. Forward and inverse transform pairs based on a fixed window with uniform sampling of the frequency axis can satisfy ...
Robert W. Johnson
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Relations entre Psi_B et quelques représentations temps-fréquence [PDF]
, 2010 Psi_B operator is an energy operator that measures the interactions between two complex signals. In this letter, new properties of Psi_B operator are presented.
BOUDRAA, Abdel-Ouahab
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Two Dimensional Short Time Hartley Transforms
Sultan Qaboos University Journal for Science, 2016 The Hartley transform, as in the case of the Fourier transform, is not suitably applicable to non-stationary representations of signals whose statistical properties change as a function of time.
Narasimman Sundararajan +2 more
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Geomagnetically Induced Currents: Frequency Spectra and Threats to Voltage Stability
IEEE Access, 2022 Geomagnetically induced currents are induced after a complex interaction between the sun and earth’s magnetic field. GICs may cripple power systems leading to voltage collapse and a drop in power quality.
Pitambar Jankee +4 more
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CoRR, 2023 arXiv admin note: substantial text overlap with arXiv:2209 ...
Zhemin Zhang, Xun Gong 0002
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Jurnal Nasional Teknik Elektro, 2014 Detection of low signal and determination target locations is the basis and important in the system radar. Performance of radar can enhanced with enhancement signal-to-noise ratio in the receiver.
Raisah Hayati, Rahmadi Kurnia
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Unconventional Resources, 2023 Time-frequency analysis is an important tool for seismic signal analysis and time-frequency resolution is the key to high-precision reservoir prediction.
Junjie Liu +4 more
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Harmonic analysis based on time domain mutual-multiplication window
Journal of Modern Power Systems and Clean Energy, 2016 The signal spectral leakage and fence effect are prone to take place during the power harmonic analysis by fast fourier transform (FFT) under asynchronous sampling. The inhibiting ability of classical window functions is restricted by side-lobe behaviors.
Tianyuan Tan +5 more
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Uncertainty principles for the windowed Opdam–Cherednik transform
Mathematical Methods in the Applied Sciences, 2023 In this paper, we study a few versions of the uncertainty principle for the windowed Opdam–Cherednik transform. In particular, we establish the uncertainty principle for orthonormal sequences, Donoho–Stark's uncertainty principle, Benedicks‐type uncertainty principle, Heisenberg‐type uncertainty principle, and local uncertainty inequality for this ...
Shyam Swarup Mondal, Anirudha Poria
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Time-varying Lifting Structures For Single-tree Complexwavelet Transform [PDF]
, 2012 In this paper, we describe a single-tree complex wavelet transform method using time-varying lifting structures. In the dualtree complex wavelet transform (DT-CWT), two different filterbanks are executed in parallel to analyze a given input signal, which
A. Enis Cetin +3 more
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