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| DECORRELATION EMD: A NEW METHOD OF ELIMINATING MODE MIXING |
| Xiao Ying 1,2 Yin Fuliang 1 |
| 1. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024；2. College of Information and Communication Engineering Dalian Nationality University, Dalian 116600) |
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Abstract Mode mixing is one of the difficulties of HHT in engineering applications, and a new method that embedding decorrelation operator into EMD process for solving the mode mixing is proposed. The essence of mode mixing is the mutual coupling of the information of the IMFs which results in the IMFs cannot represent a meaningful physical process, and it can be considered that the mode mixing is caused by the IMFs are not completely orthogonal. For the orthogonality and the non-correlation of the random process is equivalent, embedding decorrelation operator into EMD process can improve the orthogonality of the IMFs effectively and eliminate mode mixing. The simulation results show the effectiveness of this method.
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Received: 21 October 2013
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2015, Vol. 34 
