A METHOD FOR TIME-FREQUENCY ANALYSIS

A method for time-frequency signal analysis is presented. The proposed method belongs to the general class of smoothed pseudo Wigner distrib utions. It is derived from the analysis of the Wigner distribution def ined in the frequency domain. This method provides some substantial ad vantages over the Wigner distribution. The well-known cross term effec ts are reduced or completely removed. The oversampling of signal is no t necessary. In addition, the computation time can be significantly sh orter. The results are demonstrated on two numerical examples with fre quency modulated signals.