| 正弦波经验模式分解中极点拟合的抛物线插值法 |
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| 引用本文： | 刘文钊,粟塔山.正弦波经验模式分解中极点拟合的抛物线插值法[J].数学理论与应用,2009(4):14-19. |
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| 作者姓名： | 刘文钊 粟塔山 |
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| 作者单位： | 国防科技大学理学院,长沙410073 |
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| 摘 要： | 本文针对正弦渡用经验模式分解（EMD）进行分析时存在的问题，从实验上结出了采样率和信号间相互作用对END的影响。为了提高对极值点采样的准确性，本文提出了利用抛物线插值来拟舍极值点的方法，使结果得到明显的改善。本文还对信号间相互作用的问题进行了讨论。
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| 关 键 词： | EMD 正弦波 采样率 信号间相互作用 |
Empirical Mode Decomposition on Sine Wave with Parabolic Interpolation for the Extrema Fitting |
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| Liu Wenzhao Su Tashan.Empirical Mode Decomposition on Sine Wave with Parabolic Interpolation for the Extrema Fitting[J].Mathematical Theory and Applications,2009(4):14-19. |
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| Authors: | Liu Wenzhao Su Tashan |
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| Institution: | Liu Wenzhao Su Tashan (Science School of National University of Defence Technology,Changs ha,410073) |
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| Abstract: | The aim of this paper is to investigate the problem of empirical mode decomposition (EMD) on analyzing sine wave.To this end,experiments h ave been employed to analyze the effect of sampling and signal interaction on th eEMD.For the accuracy of sampling extrema,parabolic interpolation has been used for the extrema fitting which shows obvious improved results.The signal interaction of a combination of two sine waves is also discussed. |
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| Keywords: | Empirical mode decomposition (EMD) Sine wave Sampling rate Signal interaction |
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