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正交多项式拟合在EMD算法端点问题中的应用
引用本文:朱金龙,邱晓晖.正交多项式拟合在EMD算法端点问题中的应用[J].计算机工程与应用,2006,42(23):72-74.
作者姓名:朱金龙  邱晓晖
作者单位:南京邮电大学,南京,210003
基金项目:江苏省教育厅高校自然科学基金;江苏省重点实验室基金
摘    要:经验模态分解(EMD)是由Huang等人提出的一种全新的针对非线性非平稳信号处理的算法.通过EMD,可以把一个信号分解为若干个固有模态函数(IMF),再将这些IMF进行希尔波特变换,从而得到具有真正意义的瞬时频率,因此解决了传统信号处理方法的不足之处。与此同时,EMD算法是一个全新的算法,本身也存在不足,如端点问题。文章在现有的解决方法的基础上,提出了用正交多项式拟合的方法来解决EMD的端点问题,并通过和已有算法的比较来证明这种方法的有效性。

关 键 词:EMD  多项式拟合  正交多项式拟合
文章编号:1002-8331-(2006)23-0072-03
收稿时间:2005-12
修稿时间:2005-12

Dealing with the End Issue of EMD Based on Orthogonal Polynomial Fitting Algorithm
Zhu Jinlong,Qiu Xiaohui.Dealing with the End Issue of EMD Based on Orthogonal Polynomial Fitting Algorithm[J].Computer Engineering and Applications,2006,42(23):72-74.
Authors:Zhu Jinlong  Qiu Xiaohui
Abstract:The Empirical Mode Decomposition( EMD) has been developed by Huang etc, which is a new method foranalyzing nonlinear and non- stationary signal.A signal can be decomposed into some Intrinsic Mode Function(IMF),which is processed by Hilbert transform for obtaining meaningful instantaneous frequency.Therefore, this new method hasresolved deficiencies belonging to traditional methods for processing signal.At the same time, this new method has somedeficiencies due to have been developed lately.One of the deficiencies is end issue.In our paper, based on existentmethods, we put forward Orthogonal Polynomial Fitting Algorithm to deal with this issue.We have proved our mean isavailable via comparing it with other means.
Keywords:EMD
本文献已被 CNKI 维普 万方数据 等数据库收录!
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