Time-frequency image enhancement based on interference suppression in Wigner-Ville distribution
Författare
Summary, in English
This paper proposes a time-frequency (t-f) image enhancement method for suppressing interference terms in the Wigner-Ville distribution. The proposed technique adapts the direction of the smoothing kernel locally at each t-f point, so that the smoothing kernel remains aligned with the ridges of the auto-terms. This local alignment of the smoothing kernel reduces cross-terms without degrading the energy concentration of auto-terms. The results indicate that the proposed time-frequency distribution outperforms other methods in terms of its ability to resolve close signal components.
Avdelning/ar
- Matematisk statistik
- Statistical Signal Processing Group
- eSSENCE: The e-Science Collaboration
Publiceringsår
2016-10-01
Språk
Engelska
Sidor
80-85
Publikation/Tidskrift/Serie
Signal Processing
Volym
127
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Signal Processing
Nyckelord
- Directional Gaussian filter
- Multi-component signals
- Smoothing kernel
- Time-frequency analysis
- Time-frequency image enhancement
- Wigner-Ville distribution
Status
Published
Forskningsgrupp
- Statistical Signal Processing Group
ISBN/ISSN/Övrigt
- ISSN: 0165-1684