The stationary phase approximation is a basic principle of a special class of asymptotic fourier analysis, such as oscillatory integrals.
稳定态逼近是渐进分析中常用的一种方法。
It is then subject to such mathematical indignities as wavelet decomposition, multi-resolution Fourier analysis, polyphase filtering and discrete cosine transformation.
接下来它还要经过一些数学处理程序，比如小波分解，多重分辨率傅立叶分析，多相过滤，离散余弦变换等。
Fourier analysis and Laplace transforms.
傅立叶分析与拉普拉斯转换。
Fourier analysis is the mathematical method used to break sounds down into sine waves.
傅里叶分析是将声音分解为正弦波的数学方法。
The procedure is based upon recent advances in multibody dynamics and in Fourier analysis.
本方法应用了多体动力学和傅利叶分析的最新成就。
Fourier analysis method is proposed for analyzing the discontinuous time series of pressure.
提出了一种用于对不连续压力采样序列的傅立叶分析方法。
By means of Fourier analysis, a correct result is derived which fits well with the experimental results.
并用傅里叶分析的方法导出正确的结论，且与实验现象完全符合。
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。
The process of reconstructing a function of time or space from its sinusoidal components determined in Fourier analysis.
根据其正弦型分量用傅立叶分析方法重建一个时间或空间函数的过程。
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。
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。
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。
This paper puts forward an analysis method of rotor harmonic leakage reactance in consideration of conductor effective width in slots, ie, Fourier analysis.
本文提出了一种考虑槽导体有效宽度时转子谐波漏抗的分析方法，即傅立叶变换分析法。
As for some of the unsteady vibration signals of diesel engine, false result may be provided by using Fourier analysis, thus error diagnosis would be induced.
传统的振动分析常采用傅立叶分析法，对于柴油发动机某些非平稳振动信号，傅立叶分析可能给出虚假的结果，从而导致错误诊断。
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 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。
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。
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，如果示踪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；
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 key advantage of the wavelet analysis is that, in contrast to the conventional Fourier analysis, it can be localized in the time and frequency domain simultaneously.
同传统的傅立叶分析相比，小波分析的最大优势在于可以同时在时频两方面实现局部化分析。
In the theory of the system, the tools of Fourier analysis or Fourier transform enable us to analyze the response of a LTI system, such as a circuit, to such sinusoidal inputs.
在系统理论中，付里叶分析与付里叶变换的工具使我们能够对一个线性时不变系统在正弦激励下的响应进行分析，比如一个电路对正弦输入下的响应。
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。
Unlike the sinusoidal, endlessly repeating waves used in Fourier analysis, wavelets are often irregular and asymmetric, with values that die out to zero as they move farther from a central point.
与傅里叶分析中使用的无限重复的正弦波不同，小波常常是不规则的和非对称的，随着离中心点越来越远，其数值逐渐靠近零。
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。
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。
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。
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