Harmonic signal extraction from noisy chaotic interferencebased on synchrosqueezed wavelet transform
Wang Xiang-Lia), Wang Wen-Bob)
       
Duffing chaotic signal (a); mixed signal composed of chaos, harmonic, and noise (b); EMD-extracted harmonic signal sin(0.5 t ) (c), sin(0.7 t ) (d), sin(0.9 t ) (e); SWT-extracted harmonic signal sin(0.5 t ) (f), sin(0.7 t ) (g), and sin(0.9 t ) (h).