๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

THE ANALYSIS OF NON-STATIONARY SIGNALS USING TIME-FREQUENCY METHODS

โœ Scribed by J.K. Hammond; P.R. White

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
671 KB
Volume
190
Category
Article
ISSN
0022-460X

No coin nor oath required. For personal study only.

โœฆ Synopsis

This paper deals with the time-frequency analysis of deterministic and stochastic non-stationary signals. It includes the following: a brief review of the fundamentals of time-frequency analysis and various time-frequency distributions; a summary of the inter-relations between time-frequency distributions, emphasizing links between evolutionary spectra, the Wigner-Ville distribution, and Cohen-class distributions; demonstration of the effects of using different analysis methods on sample time histories; the analytical modelling of physical phenomena so as to predict theoretical time-frequency distributions, with a view to offering insight into the signal generation mechanisms.

๐Ÿ“œ SIMILAR VOLUMES

USE OF CROSS-TIMEโ€“FREQUENCY ESTIMATORS F
USE OF CROSS-TIMEโ€“FREQUENCY ESTIMATORS FOR STRUCTURAL IDENTIFICATION IN NON-STATIONARY CONDITIONS AND UNDER UNKNOWN EXCITATION
โœ P. BONATO; R. CERAVOLO; A. DE STEFANO; F. MOLINARI ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 280 KB

This paper introduces a new structural identi"cation method for use in non-stationary conditions, which applies to structures and systems in normal serviceability conditions, under unknown excitation. The proposed method uses auto-and cross-time}frequency transforms of accelerometer signals recorded

NON-STATIONARY ANALYSIS AND NOISE FILTER
NON-STATIONARY ANALYSIS AND NOISE FILTERING USING A TECHNIQUE EXTENDED FROM THE ORIGINAL PRONY METHOD
โœ M.P. RIBEIRO; D.J. EWINS; D.A. ROBB ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 475 KB

It is shown in this paper that an extended Prony time}frequency plane representation can be developed in a similar way to the one represented in other traditional non-stationary analysis methods, such as the Wigner}Ville distribution. To do this, the original Prony procedure is carried out in a seri

Time-frequency analysis of a non-uniform
Time-frequency analysis of a non-uniformly sampled signal with the Wignerโ€“Ville transform: application to the study of the gyroscopic motion of a projectile
โœ L. Simon; J.C. Valiere; C. Depollier ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 497 KB

The aim of this paper is to determine the instantaneous components of a high-speed spinning moving body by means of the pseudo discrete Wigner-Ville distribution (PDWVD). The data access generates an enslaved sampling and, due to the friction forces, the sampling is non-uniform. With respect to suff