NON-STATIONARY ANALYSIS AND NOISE FILTERING USING A TECHNIQUE EXTENDED FROM THE ORIGINAL PRONY METHOD
✍ Scribed by M.P. RIBEIRO; D.J. EWINS; D.A. ROBB
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 475 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0888-3270
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✦ Synopsis
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 series of time shifts through an array of data. The &sliding window in time shifts approach' of the developed technique is closer to the short Fourier transform without its time}frequency resolution drawback. Also, it is argued here that the extended Prony time}frequency plane representation is suitable for noise "ltering through a component exponential damping selection. The extended technique capacity of performing non-stationary analysis is compared with the pseudo-Wigner}Ville distribution, and its capacity of "ltering noise is demonstrated.