analysis of a periodic function into a sum of simple sinusoidal components

For example, a deep understanding of Fourier analysis or wavelet can give much different understanding of wave motion or technique of imaging.

举例而言，对付立叶分析的理解越深入，我们就更能理解波的运动及图像的技巧。

At present, the most widely used fault signal analysis and processing method is Fourier analysis and Fourier corresponding FFT fast algorithm.

目前，应用最广泛的故障信号分析处理方法是傅立叶(Fourier)分析和相应的FFT快速算法。

Fourier analysis and Laplace transforms.

傅立叶分析与拉普拉斯转换。

In our new method, an earthquake‐like sound is generated by modifying the frequency information of a generating function based on the symmetric Fourier analysis theory.

这种类似地震的声音是通过修改基于对称傅里叶分析理论生成函数频率信息而生成的。

The simulation results indicate that the spatial Fourier analysis is a better method to determine the MHD perturbation mode in tokamak.

比较结果表明，用空间傅里叶分析法识别托卡马克中的MHD扰动模式是一种可以行之有效的方法。

Using Fourier analysis to calculate the maximum collector voltage of PAs in inverse Class-AB mode, we can calculate the maximum efficiency.

通过对输出波形傅里叶函数的研究可以得到最大输出电压摆幅以及计算最大功率。

In mathematics, Fourier analysis and Fourier transform have been developed for a long time.

在数学里面，傅立叶分析和傅立叶变换已经发展了很长一段时间。

The traditional signal analysis method is Fourier analysis and it is only applied to steady and periodically signals.

传统的信号分析方法傅立叶变换只适于周期的、稳态的信号。

Real time Fourier analysis is introduced on the basis of traditional Fourier analysis. APF USES a slippage iterative calculation method to suit DSP control system.

在传统傅里叶分析的基础上，给出了一种实时傅里叶分析的方法，并针对DSP控制系统，运用了滑窗迭代的计算方法。

The relative waveforms, such as maximum frequency, mean frequency and bandwidth, were obtained using the short time Fourier analysis of those simulated signals.

对这些仿真信号进行短时傅里叶分析，求出相应的最大频率、平均频率和频谱宽度等曲线。

The Fourier analysis method is applied to decompose the air-gap magnetic density into the basic wave and a series of harmonic and wave shape eigen coefficient of air-gap magnetic field are calculated.

采用付立叶谐波分析的方法把气隙磁密分解为空间基波和一系列谐波，进而计算出气隙磁场波形特征系数。

These analysis method in fault diagnosis process can play an important role, but Fourier analysis method is only suitable for analysis of the continuous, the steady time signal.

这些分析方法在故障诊断过程中起到了重要的作用，但傅立叶分析方法只适合于分析连续的、平稳的时域信号。

Based on the three-base periodicity of exon sequence, he developed some Fourier analysis approaches to predict gene regions.

基于外显子序列的三基周期性，他采用傅立叶分析技术提出了几种基因区域和剪切点位置预测方法。

In this paper, a new Fourier analysis technique called the arithmetic Fourier transform (AFT) is used to compute DFT.

本文采用一种新的傅里叶分析技术—算术傅里叶变换(aft)来计算dft。

Studies in this article show that if the displacement of target cloud is less than two pixels, Fourier analysis technique is an appropriate method of computing CMW.

本文研究表明，对于给定的导风云图序列，如果示蹤云在给定时间间隔内的位移小于两个像距，适用傅立叶相位分析法计算云迹风；

The results show that in application to vehicle random vibration analysis, pseudo excitation method is as effective as Fourier analysis method but much simpler.

结果表明，虚拟激励法在汽车随机振动分析中的应用和傅里叶分析方法同样有效，却简单得多。

With the introduction of carrier fringes in digital holographic interferometry, Fourier analysis method was used to analyze interference patterns and calculate their dynamic changes conveniently.

由于在全息干涉测量中引入载波条纹，所以能够方便地应用傅里叶分析方法分析计算干涉条纹的动态变化。