Spectral Intrinsic Decomposition Method for Adaptive Signal Representation
Figure 1
Input chirp signal in (a), some eigenvectors in (b) and all the eigenvalues for the upper envelope operator in (c). A similar result is obtained for lower envelope. Around the intermittency at the coordinate , each PSMF presents as nonstationarity but contributes everywhere else to the signal composition with a centred and stationary component which are Amplitude Modulation-Frequency Modulation (AM-FM). In (d) all the eigenvalues are in the segment and greater than .
