分解信号为正交本征模态函数的方法

利用快速滤波建立了一种对信号进行本征模态函数分解的全新方法。该方法与筛选方法相比较,具有操作简单,运算速度快,尤其适用于长信号的本征模态分解。该方法的另一个重要特点是分解所得各本征模态函数及非模态函数是严格正交的,不会产生模态混淆。

Decomposing Method of Orthogonal Intrinsic Mode Function

A new method is introduced to decompose a signal into a set of IMFs(Intrinsic Mode Function)by virtue of fast band-pass filtering.Comparing with the sifting method,the new method has a merit that it is more simply operated and highly efficent in calculation,therefore it is especially applicable of decomposing long non-stationary signals into IMFs.Another merit is that IMFs and non-IMFs decomposed by the method are orthogonal each other and can prevent IMFs from mode confusing.