傅立叶分析与拉普拉斯转换。
和傅立叶分析法相比，计算量大幅减少。
In comparison with Fourier analytics method the computational complexity has been evidently simplified.
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。
Fourier analysis method is proposed for analyzing the discontinuous time series of pressure.
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。
The process of reconstructing a function of time or space from its sinusoidal components determined in Fourier analysis.
作为最经典的信号处理手段的傅立叶分析，对被分析信号的幅值变化相当的敏感。
Fourier Transform, the most classical signal processing analysis method, is ideal for the calculation of magnitude of sinusoidal signals in their steady state.
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。
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.
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。
It is then subject to such mathematical indignities as wavelet decomposition, multi-resolution Fourier analysis, polyphase filtering and discrete cosine transformation.
用短时傅立叶分析的方法研究了辐射噪声在高频段时频变化的周期性，估计了目标的螺旋桨转速。
Period characteristics of radiated noise at high frequency is investigated by a method based on short time Fast Fourier Transformation, and propeller speed is estimated.
利用光学傅立叶分析的方法可以把热成像系统看作线性滤波器，并建立热成像系统的静态性能模型。
The thermal imaging system can be regard as a linear filter and its static performance model can be established by optical Fourier analytical method.
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。
Based on the three-base periodicity of exon sequence, he developed some Fourier analysis approaches to predict gene regions.
小波分析和傅立叶分析被广泛地应用于图像处理的各个领域，它们也能被应用于遥感影像土地利用变化检测。
Wavelet and Fourier analyses are widely used in various fields of image processing. They can be utilized in land use remote sensing dynamic monitoring to detect change information automatically.
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。
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.
用傅立叶分析，把变频调速原理引入直接转矩控制中，并在此思想指导下设计了模糊速度控制器，大大简化了系统设计和计算。
By a simple Fourier analysis, this paper introduces how to design a direct torque controller according to fuzzy logic control principle.
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。
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.
上述研究结果表明，采用基于耳石形态的傅立叶分析方法来鉴别仔幼鱼的种类是可行的，以体长为基础的判别方程具有最好的判别效果。
The above results show that it is reasonable to discriminate larval and young fish with its otolith by Fourier shape analysis, especially based on body length.
其次，使用由FFT快速傅立叶分析仪、激光传感器等组成的检测系统，进行了激光传感器对木材表面粗糙度定量测量方法的研究和木材表面缺陷识别的研究。
Secondly, laser sensor quantitative measure wood surface roughness method and wood surface defect recognition are studied by the test system consisting of FFT analyzer, laser sensor etc.
本文采用基于傅立叶变换(DFT)的频谱分析方法，计算流量信号的频率和相位差。
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
采用傅立叶变换红外光谱、图像扫描和显微分析等手段，研究了静电复印废纸溶剂法脱墨的机理。
The mechanism of de-inking of photocopy waste paper with solvent treatment was investigated by Fourier transforming infrared spectrum (FT-IR), image-scanning and microscope analysis.
应用快速傅立叶变换方法对脉搏信号进行了分析。
The pulse signals were processed by using the fast Fourier transforms.
主要研究了环氧胶接接头在不同温度水中的老化行为，并用扫描电镜（SEM）和傅立叶红外光谱仪（FTIR）分析了其失效的机理。
The effect of temperature on the aging performance of epoxy bonded joint in water was researched, and its failure mechanism was analyzed by SEM and FTIR.
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 traditional signal analysis method is Fourier analysis and it is only applied to steady and periodically signals.
建立在傅立叶光学理论基础上的分析与实验结果是一致的。
The analysis based on the Fourier optical theory is coherent with the experimental results.
在信号分析领域，DFT(离散傅立叶变换)是一个常见术语。
In the field of signal analysis, the DFT (Discrete Fourier Transform) is a well known term.
你可能会问，我们为什么不像傅立叶变换用无限长的窗口一样，而在快速傅立叶变换中却用有限长的窗口进行分析呢？
You may ask, why don't we make the length of the window in the STFT infinite, just like as it is in the FT, to get perfect frequency resolution?
本文将相位分析技术中的傅立叶变换法(FTM)引入二次曝光全息干涉计量中，提出了二次曝光数字全息干涉术。
In this paper, we apply the Fourier transform method (FTM) of the phase analysis method to double-exposure holographic interferometry and propose double-exposure digital holographic interferometry.
并用短时傅立叶变换分析了声波传播过程中晶粒散射波的频谱特性。获得了一些有用结果。
We also use short time Fourier transforms to analyze the spectrum of the scattered wave during the propagation process, and obtain some useful results.
在第二章中，针对两组分和三组分混合体系分析问题提出了傅立叶变换平滑比光谱导数的新方法。
In chapter two, a new method which combines Fourier transform smoothing with ratio spectra derivative has been developed for analysis of binary or ternary mixtures.
傅立叶描述子是分析和识别物体形状的重要方法之一。
Fourier descriptor is an important method used in shape analysis and recognition.
本文介绍了用短时傅立叶变换分析瞬态诱发耳声发射方法，并给出了其时频分布的实验结果，分析了其各个频率成份出现的不同时刻及持续时间。
This paper introduces the method of analyzing TEOAEs by short time Fourier transform and gives the experiment results of time frequency distribution, then we analyze each frequency component.
在一些电路教材中常把带滤波器的整流电路作为一个实例，用以讲述用傅立叶级数的谐波分析方法来求解非正弦电路。
In some circuit textbooks the rectifier circuit with the filter has been used as an example to illustrate the harmonic analysis of nonsinusoidal circuit adopted Fourier series.
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