Results 41 to 50 of about 21,592 (299)

Criterion on Lp1×Lp2→Lq-Boundedness for Oscillatory Bilinear Hilbert Transform

open access: yesAbstract and Applied Analysis, 2014
We investigate the bilinear Hilbert transform with oscillatory factors and the truncated bilinear Hilbert transform.
Zuoshunhua Shi, Dunyan Yan
doaj   +1 more source

Alternating Sunspot Area and Hilbert Transform Analysis [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
We investigate the sunspot area data spanning from solar cycles 1 (March 1755) to 23 (December 2010) in time domain. For this purpose, we employ the Hilbert transform analysis method, which is used in the field of information theory.
Bang-Yeop Kim, Heon-Young Chang
doaj   +1 more source

A causal model for linear RF systems developed from frequency-domain measured data [PDF]

open access: yes, 2005
With the ever-growing complexity of interconnect networks, models developed from measured data or data from 3-D electromagnetic simulators are increasingly becoming essential. It is to this end that the current contribution is directed. In particular, it
Condon, Marissa   +2 more
core   +1 more source

Bragg grating based integrated photonic Hilbert transformers

open access: yes, 2013
Planar Bragg grating based photonic Hilbert transformers are experimentally demonstrated in this work. Planar Bragg gratings are utilized to implement a general Hilbert transform, a fractional order Hilbert transform and terahertz bandwidth Hilbert ...
Smith, P.G.R.   +7 more
core   +1 more source

A Comparative Study of Time-Frequency Representations for Fault Detection in Wind Turbine [PDF]

open access: yes, 2011
To reduce the cost of wind energy, minimization and prediction of maintenance operations in wind turbine is of key importance. In variable speed turbine generator, advanced signal processing tools are required to detect and diagnose the generator faults ...
CHARPENTIER, Jean-Frederic   +10 more
core   +1 more source

Generalized multidimensional Hilbert transforms in Clifford analysis

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
Two specific generalizations of the multidimensional Hilbert transform in Clifford analysis are constructed. It is shown that though in each of these generalizations some traditional properties of the Hilbert transform are inevitably lost, new bounded ...
Fred Brackx   +2 more
doaj   +1 more source

Critical Assessment Of The Issues In The Application Of Hilbert Transform To Compute The Logarithmic Decrement

open access: yesArchives of Metallurgy and Materials, 2015
The parametric OMI (Optimization in Multiple Intervals), the Yoshida-Magalas (YM) and a novel Hilbert-twin (H-twin) methods are advocated for computing the logarithmic decrement in the field of internal friction and mechanical spectroscopy of solids.
Majewski M., Magalas L.B.
doaj   +1 more source

Phase controlled integrated interferometric single-sideband filter based on planar Bragg gratings implementing photonic Hilbert transform

open access: yes, 2013
The first monolithically integrated all-optical single-sideband filter based on photonic Hilbert transform and planar Bragg gratings is proposed and experimentally demonstrated.
Smith, P.G.R.   +6 more
core   +1 more source

SPECTRAL ESTIMATION OF TIME SERIES

open access: yesСовременная наука и инновации, 2022
As a result of spectral analysis, namely, the fast Fourier transform (FFT) method, the wavelet transform method, the Hilbert-Huang transform method, certain periods of the time series representing the monthly average values of the sunspot numbers were ...
L. N. Dzhimbeeva   +5 more
doaj   +1 more source

Analyse des signaux multicomposante à modulation de fréquence linéaire par la transformation de Teager-Huang-Hough [PDF]

open access: yes, 2014
A novel detection approach of linear FM (LFM) signals, with single or multiple components, in the time-frequency plane of Teager-Huang (TH) transform is presented.
BOUDRAA, Abdelouahab   +4 more
core   +1 more source

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