Results 151 to 160 of about 1,520,902 (172)

The Modified Discrete Wigner Distribution and its Application to Acoustic Well Logging

1984
The full wave acoustic well log gives a large amount of information about the surrounding formation, which is encoded into a complex wavetrain and is not easily interpretable. This paper presents a technique using the Wigner Distribution to recover some of the information encoded in these wavetrains.
Dwight D. Day, Rao Yarlagadda
openaire   +1 more source

A non-aliased discrete-time Wigner distribution for time-frequency signal analysis

ICASSP '82. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
The Wigner Distribution (WD) is a signal transformation which has its origin in quantum mechanics. It possesses some important properties which make it very attractive for time-frequency signal analysis. The WD was originally defined for continuous-time signals. A discrete-time version of it was proposed recently [6].
openaire   +2 more sources

Efficient computation of the discrete Wigner-Ville distribution

2012
To ensure that the discrete Wigner-Ville distribution (DWVD) does not contain aliasing terms, the analytic signal is normally used instead of the real signal. However, the computation of the analytic signal amounts to most of the computation time.
Chan, Shingchow, Ho, KaLeung
openaire   +1 more source

Alias-free Smoothed Wigner Distribution Function For Discrete-time Samples

OCEANS 91 Proceedings, 1991
Abstract : An alias-free Wigner distribution function (WDF), for a time waveform s(t) limited to total frequency extent F, is available if the time sampling increment delta is less than 1/F. Furthermore, the WDF can be efficiently numerically evaluated via fast Fourier transform (FFT) procedures if the FFT size N is greater than 2T/delta, where T is ...
openaire   +1 more source

Discrete wigner distribution and half-integer representations of discrete-time signals and systems

2020
ÖZET AYRIK WIGNER DAĞILIMI VE BUÇUKLU SAYILARLA AYRIK ZAMANLI SİNYAL VE SİSTEMLERİN TEMSİLİ Burhan Gülbahar Elektrik ve Elektronik Mühendisliği Bölümü Yüksek Lisans Tez Yöneticisi: Dr. Haldun Özaktaş Şubat 2002 Bu tezde sürekli Wigner dağılımının ve onun iki boyutlu Fourier dönüşümü olan be lirsizlik fonksiyonunun ayrık karşılığı tanımlanmıştır ...
openaire   +1 more source

Signal reconstruction from discrete-time Wigner distribution

2014
Master of ...
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The Weyl – Wigner – Moyal Formalism on a Discrete Phase Space. II. The Photon Wigner Function

Fortschritte Der Physik, 2021
FRANCISCO Javier Turrubiates, Jaromir Tosiek   +1 more
exaly  

Discrete Wigner Distribution Function Construction

2009
openaire   +1 more source

Approximate wave function from approximate non-representable Wigner distributions

Journal of Modern Optics, 2008
Leon Cohen, Patrick Loughlin
exaly  

A discrete formulation of the Wigner transport equation

Journal of Applied Physics, 2007
Kyoung-Youm Kim
exaly