本文通过分析经验模式分解方法的原理，对其关键技术进行研究并提出了一种改进算法。

This paper analyzes the principle of empirical mode decomposition method, and it analyzes key technologies and proposed an improved algorithm.

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经验模式分解（EMD）通过筛分过程将原始信号分解成若干个基本模式分量（IMF），可看作无需预设带宽的自适应高通滤波方法。

Empirical mode decomposition(EMD) is a signal processing technique to decompose data set into several intrinsic mode functions(IMF) by a sifting process.

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