Analysis of Polynomial FM Signal Based on Wavelet-Reassignment Method

Aiming on the problem of low precision and crossterm in the conventional method of in analyzing polynomial FM signal. The method that based on wavelet transform and time-frequency reassignment is proposed. Not only overcomes the contradiction between the crossterms of polynomial FM signal and the approximate time-frequency centering, but also is good at reducing noise. In this paper, the principle and application of wavelet-reassignment are summarized, and the polynomial FM signal analysis method is made based on the wavelet-reassignment and other methods. The simulation results show that the novel method has compositive advantages.