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The pulse signals were processed by using the fast Fourier transforms. 应用快速傅立叶变换方法对脉搏信号进行了分析。
We use Fast Fourier Transform arithmetic to calculate two seriate images. 在相邻两帧图像上，找出相关度最大的两个小区域，用它们之间的距离除以两次拍摄之间的时间间隔，就得到这个小区域在间隔时间内的平均速度，进而得到整个流场的速度分布。
Some applications of the fast Fourier transform to the polynomial calculation. 多项式计算当中快速傅立叶变换的应用。
Does not need to say that, fast Fourier transforms algorithm everybody all to know. 不用多说,快速傅立叶变换算法大家都知道的。
A complex data fast Fourier transforms(FFT) processor is proposed.This FFT processor can be reconfigured as a 4,16,64,256 or 1024 points computation. 根据傅里叶变换特点，设计一种能够完成4,16,64,256或1024点复数快速傅里叶变换处理器芯片。
In addition, the emphasis of the thesis is the use of Fast Fourier Transform (FFT) in reactive power compensation. 研究的另一个重点是快速傅立叶变换在无功补偿中的应用。
Fast Hartley Transform(FHT) can be achieved by using the structures similar to that in Fast Fourier Transform (FFT). 利用与快速傅氏变换相同的结构可以构造快速哈特莱变换(FHT)。
DCT is based on FFT (Fast Fourier Transform), so integers FFT transform must be structured firstly. DCT变换采取基于FFT(fast Fourier transform)的快速算法，所以，首先寻找整数FFT变换。
Besides, combining Fast Fourier Transform (FFT) with EMD shows the different results with HHT. 此外，结合快速傅利业转换(FFT)与EMD呈现出与HHT不同的结果。
Using convolution and fast Fourier transform(FFT) algorithm to calculate diffraction integral,the CGH is reconstructed by digital focus method. 通过卷积和快速傅立叶变换 (FFT)的方法计算衍射积分 ,以数字聚焦的方法进行再现。
Application of complex conjugate gradient method(CCGM) and fast Fourier transform(FFT) to study multitudinous scattering in near-field optics. 利用共轭梯度法与快速傅立叶变换(CCGM-FFT)相结合的方法来研究近场多体散射问题。
The conjugate gradient method (CGM) and fast Fourier transform (FFT) technique are used to reduce the necessary memory and CPU time. 在求解过程中应用共轭梯度法 (CGM)和快速傅立叶变换 (FFT)相结合的方法降低所需计算机内存和CPU时间。
Fast Fourier Transform (FFT) is inevitable to cause the spectrum leakage and fence effect because of truncation and discreteness in signal collection. 采用快速傅立叶变换(FFT)进行电力系统谐波分析时，需要对采样信号截断并离散化，从而导致频谱泄漏和栅栏效应。
Firstly, on the basis of the fabric texture classification, a spectrum image was derived from the Fast Fourier Transform (FFT). 首先在研究织物纹理分类的基础上，通过傅立叶变换获得频谱图像；
Application of complex conjugate gradient method (CCGM) and fast Fourier transform (FFT) to study multitudinous scattering in near-field optics. 摘要利用共轭梯度法与快速傅立叶变换(CCGM-FFT)相结合的方法来研究近场多体散射问题。
In the system,fast Fourier transform and multichannel signal time domain waveform,amplitude spectrum and cross-power spectrum is plotted and displayed. 该系统实现了快速傅里叶变换,多通道时域波形,幅值谱,互功率谱的绘制与显示。
Introduction the Fourier series, Convolution,Laplace transform, Z-transform, Discrete time and fast Fourier transform, Adaptive filter,digital filter. 介绍傅立叶,拉式,Z转换之数学运算,同时应用于离散与计算快速傅立叶转换,而此数学运算使用时数位滤波器之应用
The Fourier Analysis tool solves problems in linear systems and analyzes periodic data by using the Fast Fourier Transform (FFT) method to transform data. “傅立叶分析”分析工具可以解决线性系统问题,并能通过快速傅立叶变换(FFT)进行数据变换来分析周期性的数据。
A fast vortex method for solving complex irregualr regions is developedin the present paper, using combination of capacitance matrix technique(CMT), fast Fourier transforms (FFT) as well as vortex-in-cell method (VIC). 本文将容量矩阵技术与快速Fourier变换相结合求解非矩形域的Poisson方程,再与格子涡方法相结合,发展了一套求解复杂外形的快速涡方法。
The computational results in imaging of lenses by means of the fast Fourier transform (FFT) method agree excellently with those by means of integration method. 证明可以把快速傅里叶变换法（FFT）用于透镜成像的聚焦计算，与积分法得到相同的结果。