Pseudo Wigner-Ville Distribution, Computer Program and its Applications to Time-Frequency Domain Problems

Abstract

Machinery operating in non-stationary mode generates a signature which at each instant of time has a distinct frequency. A time-frequency domain representation is needed to characterize such signature. Pseudo Wigner-Ville distribution is ideally suited for portraying non-stationary signal in the time- frequency domain and carried out by adapting the fast Fourier transform algorithm. The important parameters affecting the pseudo Wigner-Ville distribution are discussed and sensitivity analyses are also performed. Practical examples of an actual transient signal are used to illustrate its dynamic features jointly in time and frequency. Pseudo Wigner-Ville distribution, Analytic signal, Hilbert transform, Gaussian window, Time- frequency domain.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1993
Accession Number
ADA261839

Entities

People

  • Jae-jin Jeon
  • Young-sik Shin

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Computer Programs
  • Computers
  • Cross Correlation
  • Digital Filters
  • Digital Signal Processing
  • Distribution Functions
  • Elimination
  • Fast Fourier Transforms
  • Filters
  • Frequency Domain
  • Mechanical Engineering
  • Power Spectra
  • Signal Processing
  • Three Dimensional
  • Time Intervals
  • Two Dimensional

Fields of Study

  • Engineering

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