信号的局部能量和瞬时频率都可以从其本征模函数中推导出来。
The local energy and instantaneous frequency of the signal can be derived from the IMFs.
在筛选过程中，插值是产生本征模函数关键的一步，是希尔伯特谱分析的基础。
In the course of filtration, interpolation is the essential step to produce the intrinsic mode functions, and the basis of the Hilbert spectral analysis.
首先利用EMD方法对NYMEX市场的原油期货价格进行分解，得到一系列平稳且具有较强周期性的本征模函数(IMF)和一个趋势项。
First we employ EMD method to decompose the crude oil prices in NYMEX, and obtain a series of intrinsic mode function (IMF), which are stationary and of strong periodicity, and a trend term.
根据这个表达式，只要给定介质波导的本征模，就可以得到该波导的并矢格林函数。
From these expressions the dyadic Green's function for a dielectric waveguide can be obtained if the eigen-mode of the waveguide are given.
得到的电型并矢格林函数表达式由包括九个并矢分量的本征模展开式和一个奇异项组成。
It is shown that the expression of electric-type dyadic Green's function is the sum of an eigen-mode expansion containing nine dyadic components and a singular term.
得到的电型并矢格林函数表达式由包括九个并矢分量的本征模展开式和一个奇异项组成。
It is shown that the expression of electric-type dyadic Green's function is the sum of an eigen-mode expansion containing nine dyadic components and a singular term.
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