LI Heng, LI Zhi. Local Mean Computation for Empirical Mode Decomposition Based on Higher Order Derivative[J]. Acta Electronica Sinica, 2015, 43(6): 1073-1077.
LI Heng, LI Zhi. Local Mean Computation for Empirical Mode Decomposition Based on Higher Order Derivative[J]. Acta Electronica Sinica, 2015, 43(6): 1073-1077. DOI: 10.3969/j.issn.0372-2112.2015.06.005.
In order to improve the separation performance of empirical mode decomposition
an algorithm based on higher order derivative is put forward.First
a necessary condition for separability is studied.It is proved that separability can be improved by even order derivative of the input signal.An algorithm that builds local mean from zero-crossings of the even order derivative is then proposed.Finally
decomposition performance of the proposed method is demonstrated by application to synthetic signals.Numerical experiments show that the proposed method has enhanced separation quality which agrees well with the theoretical analysis.In compared with the empirical mode decomposition