Results 21 to 30 of about 823,550 (296)
Bragg grating based integrated photonic Hilbert transformers
, 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. +3 more
core +2 more sources
On Finite Hilbert Transforms [PDF]
Transactions of the American Mathematical Society, 1975 Let E be a bounded measurable subset of the real line. The finite Hilbert transform is the operator HE defined on one of the spaces LP(E) (1 1, the Hilbert transform of f at x is defined by (1) Hf(x) = li (rmi) f f(tXt -x) 1dt, provided this latter limit exists. It is known that if f is in LP(R), for p > 1, then Hf exists a.e.
openaire +1 more source
Archives of Metallurgy and Materials, 2015 In this work, we present a novel Hilbert-twin method to compute an envelope and the logarithmic decrement, δ, from exponentially damped time-invariant harmonic strain signals embedded in noise.
Magalas L.B., Majewski M.
doaj +1 more source
AragornJDC/Hilbert-transform: Hilbert transform algorithm
, 2020 Hilbert transform ...
AragornJDC
core +1 more source
Time-Frequency Analysis of Noisy Vibration Signal Based on Improved Hilbert-Huang Transform
Shanghai Jiaotong Daxue xuebao, 2023 Aimed at the phenomenon of modal confusion and lack of practical significance of instantaneous frequency caused by Hilbert-Huang transform (HHT) noisy vibration signal time-frequency analysis, complete ensemble empirical mode decomposition with adaptive ...
SUN Miao, YANG Junkai, WU Li
doaj +1 more source
Pulse Signal Analysis Method Based on Improved HHT [PDF]
Jisuanji gongcheng, 2019 The traditional Hilbert-Huang Transform(HHT) has low accuracy in Empirical Mode Decomposition(EMD) when processing pulse signals,and there are mode mixing problems.In response to this problem,this paper proposes an improved HHT method.Combined with Time ...
KUANG Xue, LI Zhi, WANG Yongjun, ZHANG Shaorong
doaj +1 more source
The Hilbert transform of a measure
Journal d'Analyse Mathématique, 2010 Let $\fre$ be a homogeneous subset of $\bbR$ in the sense of Carleson. Let $μ$ be a finite positive measure on $\bbR$ and $H_μ(x)$ its Hilbert transform. We prove that if $\lim_{t\to\infty} t \abs{\fre\cap\{x\mid\abs{H_μ(x)}>t\}}=0$, then $μ_s(\fre)=0$, where $μ_\s$ is the singular part of $μ$.
Poltoratski, Alexei +2 more
openaire +4 more sources
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
core +1 more source
toster90/NFFT-based-Hilbert-transform: Initial release
, 2020 The calculation of the Hilbert transform by a non-equispaced Fast Fourier Transform (NFFT) and its application to gravity and magnetic data Computes the Hilbert transform of vector fields in the space domain (see Nabighian, 1984: https://doi.org/10.1190 ...
Tobias B.
core +1 more source