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Showing 1 to 20 of 24 for “"Hilbert Transform"”.

  1. The Hilbert Transform and its Applications in Computational finance

    Lin, XiongUniversity of Illinois at Urbana-Champaign2011

    Made available in DSpace on 2011-01-21T22:51:17Z (GMT). No. of bitstreams: 2 Lin_Xiong.pdf: 1453819 bytes, checksum: 4a028ff8177cb78f4dc10f2a70057b95 (MD5) license.txt: 4056 bytes, checksum: 04b9c765a494d563e13d0380d64f98d9 (MD5)

    uiuc Repository record

  2. The Hilbert Transform as an Average of Dyadic Shift Operators

    Atasever, Nuriye

    … we discuss Petermichls characterization of the Hilbert transform as an average of dyadic shift operators following the presentation by Thomas Hytonen [Hyt]. A linear and bounded operator T in L2(R) that commutes with translations, dilations and anticommutes with reflections must be a constant …

    unm Repository record

  3. Observing limitations of the discrete Hilbert transform with S-parameter measurements of microstrips and striplines

    Chang, Chia-LunUniversity of Illinois at Urbana-Champaign2012

    … measured data, the limitations of the discrete Hilbert transform were tested. The results show the kind of properties frequency response data should have in order for the discrete Hilbert transform to correctly determine whether the data is causal or not.

    uiuc Repository record

  4. Multilinear operators in harmonic analysis: Methods and applications

    Dong, DongUniversity of Illinois at Urbana-Champaign2018

    We first give a survey on multilinear Hilbert transforms. Then we study several variants of bilinear Hilbert transform such as bilinear Hilbert transform along two polynomials, discrete (integer) bilinear Hilbert transform along polynomials, finite field version of bilinear Radon transform, a …

    uiuc Repository record

  5. Multidimensional distributions and generalized Hilbert transforms in Clifford analysis

    De Knock, BramGhent University. Faculty of Engineering and Architecture2008

    The classical Hilbert transform on the real line is a well–known singular integral operator with applications in the theoretical description of many devices and systems. To our knowledge, J. Horváth was the first to introduce a multidimensional vector valued generalization of the Hilbert transform …

    ghent Repository record

  6. Redução do Eletroencefalograma durante monitorização contínua de paciente crítico

    Santos, Talita Endriely Batista dosUniversidade Federal do Rio de Janeiro2017

    "[ENG] This work aimed to apply the Hilbert Transform to the Electroencephalogram (EEG) data reduction. The scope of this work was to analyze differences between two EEG reduction methods, amplitude-integrated EEG (aEEG) and Hilbert aEEG (HaEEG). The main difference is in the signal envelope …

    brazil-uerj Repository record

  7. Pricing discretely monitored barrier options under exponential-Levy processes

    Camroodien, AyeshaAfrican Institute of Financial Markets and Risk Management2019

    … implementation. This dissertation presents transform methods for pricing discretely monitored barrier options under exponential-Levy ´ processes. Single-barrier knock-out options are evaluated under the Black-Scholes framework, the normal inverse Gaussian model and the Variance Gamma model. …

    cape-town Repository record

  8. Amplitude and frequency demodulation controller for MEMS accelerometer

    Brooks, Lane Gearle, 1975-Massachusetts Institute of Technology2001

    … The Vector Readout method of demodulation uses a Hilbert Transform filter and the CORDIC algorithm to simultaneously estimate both the amplitude and phase of a signal. A feedback controller is designed to hold the oscillation of a mass resonator at a constant amplitude.

    mit Repository record

  9. Fault detection of rolling element bearings

    Liu, Chao-Shih2005

    … the envelope of the bandpass signal using Hilbert transform. There are two major limitations of using the HFRT. First of all, the HFRT demands on knowledge of the resonance frequency range where the defect generated impulses is more pronounced with respect to normal system vibrations. The …

    washington Repository record

  10. The development of nonlinear surface and internal wave groups

    Chereskin, Teresa K.Massachusetts Institute of Technology and Woods Hole Oceanographic Institution1982

    … and phase modulations were obtained using the Hilbert transform and specified as an initial condition to the cubic nonlinear Schrodinger equation, which was solved numerically. This equation is known to govern the slowly varying complex modulation envelope of gravity waves on deep water. When …

    woods-hole Repository record

  11. Fault detection in rotating machines by vibration signal processing techniques

    D'Elia, Gianluca <1980>Alma Mater Studiorum - Università di Bologna2008

    … techniques including synchronous time averaging, Hilbert transform-based demodulation, continuous wavelet transform, Wigner-Ville distribution and spectral correlation density function. The detection and the diagnostic capability of these techniques are discussed and compared on the basis of …

    bologna Repository record

  12. Sparse technology in weighted harmonic analysis

    Hoang, Cong QuocUniversity of Alabama Libraries2017

    … maximal function associated to the bilinear Hilbert transform.

    alabama Repository record

  13. Commutators and dyadic paraproducts on weighted Lebesgue spaces

    Chung, Dae-Won

    … Lebesgue space L^2(w) of the commutators of the Hilbert, Riesz and Beurling transforms with a BMO function b depends quadratically on the A2 characteristic of the weight, as opposed to the linear dependence known to hold for the operators themselves. It is known that the operator norms of these …

    unm Repository record

  14. Full waveform inversion of ultrasonic phased array data for the tomographic reconstruction of heterogeneous media for NDT

    Niven, RussellUniversity of Strathclyde2020

    … function is then proposed (a time windowed Hilbert transform) which is applied to the layered medium allowing for the comparison of different objective functions.

    strathclyde Repository record

  15. Fast Chirped Signals for a TDMA Ultrasonic Indoor Positioning System

    Williams, Lauren M2020

    … in this work and consider two methods: the Hilbert transform and a zero-crossings method. This work highlights some of the advantages and disadvantages of both methods. Time of flight (ToF) in this system can ultimately be obtained by considering the instantaneous frequency estimations and …

    calpoly Repository record

  16. A Study of Indoor Ultra-wideband Propagation Measurement and Characterization

    Bayram, AhmetVirginia Tech2004

    … of the phase from the amplitude data using a Hilbert transform relationship. Extensive propagation data are collected in a frequency range of 1 to 12 GHz in two buildings on Virginia Tech campus. Using the data, channel characterization results are obtained and compared to those based on …

    vt Repository record

  17. Seismic Constraints on Slow Slip Events within the Cascadia Subduction Zone

    Aguiar, Ana Cristina2020

    … sps, rectified, its envelope is computed using a Hilbert transform, and lastly the envelopes are averaged from regionally adjacent stations to provide a single metric indicative of tremor activity. Then tremor duration is compared to equivalent moment slip inversions of corresponding GPS- derived …

    central-wash Repository record

  18. Construction of frequency-energy plots for nonlinear dynamical systems from time-series data

    Wang, XingyuanUniversity of Illinois at Urbana-Champaign2010

    … to analytical calculations or use of the wavelet transform. Although these are acceptable methods of constructing the FEP, the former requires significant computation, and the latter does not provide a sharp frequency estimate. This work presents the construction of the FEP with knowledge of the …

    uiuc Repository record

  19. Methodology for nonlinear quantification of a cantilever beam with local nonlinearities

    Herrera, Christopher AngeloUniversity of Illinois at Urbana-Champaign2015

    … use of empirical mode decomposition and the Hilbert transform.

    uiuc Repository record

  20. It’s Not Just a Phase: Real-Time Aeroelastic Flutter Control Optical Flow Sensing and Piezoelectric Control of Aeroelastic Flutter

    Rothman, Paul2026

    … Hz) was identified using FFT analysis. A Hilbert transform obtained instantaneous waveform phase. Phase-locked square wave actuation (0–4.2 V, amplified 300×to 0–1260 V) was applied at the measured flutter frequency with user-adjustable phase offset (0–360°). Systematic phase sweep …

    unr Repository record

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