Azeemsha Thacham Poyil and Nasimudeen KM
Study on Performance of Wigner Ville Distribution for Linear FM and Transient Signal Analysis
877 - 880
2012
6
8
International Journal of Electronics and Communication Engineering
https://publications.waset.org/pdf/7463
https://publications.waset.org/vol/68
World Academy of Science, Engineering and Technology
This research paper presents some methods to assess the performance of Wigner Ville Distribution for TimeFrequency representation of nonstationary signals, in comparison with the other representations like STFT, Spectrogram etc. The simultaneous timefrequency resolution of WVD is one of the important properties which makes it preferable for analysis and detection of linear FM and transient signals. There are two algorithms proposed here to assess the resolution and to compare the performance of signal detection. First method is based on the measurement of area under timefrequency plot; in case of a linear FM signal analysis. A second method is based on the instantaneous power calculation and is used in case of transient, nonstationary signals. The implementation is explained briefly for both methods with suitable diagrams. The accuracy of the measurements is validated to show the better performance of WVD representation in comparison with STFT and Spectrograms.
Open Science Index 68, 2012