混沌混合信号欠定盲分离方法的研究

Research of Undedetermined Blind Source Separation Method on Chaotic Signal

提出一种混沌混合信号欠定盲源分离的方法。首先讨论了混沌信号的特征,利用EMD对信号进行分层并且得到独立子波函数,然后把独立子波函数加入到单路混沌信号中从而实现混沌信号的盲分离;最后通过混沌信号的分离实验,证明了本方法的有效性和可靠性。该方法可以很好的检测系统或电路中是不是产生了混沌现象,进而采取相应的措施,利用或抑制混沌,对提高机器的使用寿命和电路的稳定性有很好的应用价值。

This paper presents an undedetermined blind source separation method for the chaotic mixed-signal.First,the characteristics of chaotic signals were discussed and the independent sun-band functions were gained by using EMD to stratify on the signal.Then the blind separation for the chaotic mixed-signal is realized by putting the independent sun-band functions into the single-channel chaotic signal.Finally,the validity and the feasibility of this method were confirmed through the separation experiment on the chaotic signal.The proposed method in this paper can be used to test the system or determine whether chaos was produced in the circuit,and then take corresponding measures to use or inhibit chaos,which is valuable for improving the life of the machine and the stability of the circuit.