Time-frequency Extraction Algorithm of Harmonic Signal from Lorenz Mixed Signal
نویسندگان
چکیده
The separation of chaos and signal is an important problem of chaos signal processing. In recent years, the time-frequency analysis method is more and more mature. This paper first introduces the basic theory of time-frequency methods. We compare wavelet method with empirical mode decomposition (EMD) method, according to the different noise situation of the performance analysis of harmonic signal extraction in chaos background. Summarize a new synthesis about wavelet threshold and empirical mode decomposition (EMD) complementary of new harmonic signal extraction by experimental simulation. Computer simulation verified that the methods are high availability.
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