Suppressing the Cross Terms of the Wigner Distribution with an Adaptive Frequency Smoothing Window

摘要

A method for reducing the cross-terms in the WD with an adaptive frequency smoothing window is proposed in this paper. By using the short time Fourier spectrum of the input signal and some simple preprocessing steps, such as smoothing and peak labeling, the proposed method adoptively calculates the width of the frequency smoothing window. The simulation results of the linear frequency modulated signal validate its effectiveness.