COMPARATIVE ANALYSIS OF VARIANTS OF GABOR-WIGNER TRANSFORM FOR CROSS-TERM REDUCTION

被引：5
作者：
Ajab, Muhammad [1 ]
Taj, Imtiaz Ahmad [1 ]
Khan, Nabeel Ali [2 ]
机构：
[1] MAJU, Islamabad, Pakistan
[2] Fed Urdu Univ FUUAST, Islamabad, Pakistan
来源：
METROLOGY AND MEASUREMENT SYSTEMS | 2012年 / 19卷 / 03期
关键词：
Wigner Distribution; Gabor Transform; Gabor Wigner Transform; Fractional Fourier Transform; FRACTIONAL FOURIER-TRANSFORMS; ELIMINATION;
D O I：
10.2478/v10178-012-0043-6
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Gabor Wigner Transform (GWT) is a composition of two time-frequency planes (Gabor Transform (GT) and Wigner Distribution (WD)), and hence GWT takes the advantages of both transforms (high resolution of WD and cross-terms free CT). In multi-component signal analysis where GWT fails to extract auto-components, the marriage of signal processing and image processing techniques proved their potential to extract autocomponents. The proposed algorithm maintained the resolution of auto-components. This work also shows that the Fractional Fourier Transform (FRFT) domain is a powerful tool for signal analysis. Performance analysis of modified fractional GWT reveals that it provides a solution of cross-terms of WD and blurring of GT.
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收藏
页码：499 / 508
页数：10
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