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

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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.

Author(s):
Jeon, Jae-jin ; Shin, Young S.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF MECHANICAL ENGINEERING
Descriptive Note:
Rept. for 1 Oct 92-28 Feb 93
Pagination:
0087

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Unlimited

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
NPS-ME-93-002
Monitor Series:
NAVSEA
 Subject Terms
Joint Capability Areas:
JCA_2_Battlespace Awareness; JCA_2.2.1_Signals Collection; JCA_2.2_Collection; JCA_5_Command and Control; JCA_6.3.3_Spectrum Management; JCA_5.3_Planning; JCA_6_Net Centric; JCA_6.3_Net Management; JCA_1_Force Support; JCA_1.3_Human Capital Management; JCA_4.6_Engineering; JCA_1.3.2_Personnel Management; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support; JCA_8_Building Partnerships; JCA_4.3_Maintain; JCA_8.2_Shape
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*COMPUTER PROGRAMS, *SIGNAL PROCESSING, *LIFE EXPECTANCY(SERVICE LIFE), *MACHINES, *TIME DOMAIN, *FREQUENCY DOMAIN, *TIME SIGNALS, *DISTRIBUTION FUNCTIONS, ALGORITHMS, FREQUENCY, INPUT, TRANSIENTS, DYNAMICS, PARAMETERS, SENSITIVITY, TIME, THREE DIMENSIONAL, STATIONARY, WINDOWS, SIGNATURES, FAST FOURIER TRANSFORMS, COMPUTER AIDED DIAGNOSIS
Field(s)/Group(s):
Statistics and Probability, Computer Programming and Software, Machinery and Tools
Keyword(s):
*WIGNER VILLE DISTRIBUTION, *NONSTATIONARY SIGNALS, DIGITAL SIGNALS
Report Date:
1993 Mar 01