Abstract: Based on the frequency-hopping signals in the multi-component model,the spectra(Spectrogram) and the Wigner distribution cross-term features were analyzed,the analysis methods of adaptive spectrum frequency-hopping signals were proposed.The method used the most relevant criteria,adaptive to change window function length,frequency-hopping signals in the local matching of attributes,then got a better time-frequency resolution.Smoothing Algorithm performance and Wigner distribution(SPWVD: Smoothed Pseudo Wigne...