Using STFT-Wigner transform to suppress the cross terms in Wiger-Ville distribution
Aijun Yin · Journal of Chongqing University. English Edition · 2013
There is a serious crossing-term problem when Wigner-Ville distribution(WVD) is used to analyze multi-component non-stationary signals.While,using Gabor-Wigner transform(GWT) can avoid the crossing-term problem and maintain the clarity as good as WVD.But as the component frequency of multi-component signals interfere each other,GWT can't get clear-cut results.A modified STFT-Wigner is proposed to suppress the cross terms in WVD effectively and maintain the clarity.This method is proved to be practical through analyzing simulation signals and experiment signals.