Multitaper Wigner distribution with pre-determined doppler-lag bandwdith and sidelobe suppression
Författare
Summary, in English
of a time-frequency distribution might result in computationally
efficient calculations if the number of multi tapers
to be considered in the spectrogram are small. In this paper,
penalty functions are designed and used in the computation
of multi tapers corresponding to the Wigner distribution
time-lag kernel. The resulting multi taper spectrogram will
approximately fulfill the concentration of the Wigner distribution
but will also suppress the usual Wigner distribution
cross-terms outside a predetermined doppler-lag bandwidth.
The level of the cross-term suppression is determined by a
parameter of the penalty function. The proposedmethod uses
a limited number of multi tapers which is determined by the
decided bandwidth. The time-frequency concentration of the
proposed method is compared to other well-known distributions.
The performance for white noise disturbances are also
evaluated.
Avdelning/ar
- Matematisk statistik
- Statistical Signal Processing Group
Publiceringsår
2010
Språk
Engelska
Sidor
1737-1741
Publikation/Tidskrift/Serie
European Signal Processing Conference
Volym
2010
Länkar
Dokumenttyp
Konferensbidrag
Förlag
European Association for Signal Processing (EURASIP)
Ämne
- Probability Theory and Statistics
Conference name
18th European Signal Processing Conference (EUSIPCO-2010)
Conference date
2010-08-23 - 2010-08-27
Conference place
Aalborg, Denmark
Status
Published
Forskningsgrupp
- Statistical Signal Processing
- Statistical Signal Processing Group
ISBN/ISSN/Övrigt
- ISSN: 2219-5491