Fast Fourier transformation is an effective, practical DFT algorithm.
快速傅立叶变换是一种有效、实用的信号DFT算法。
Real operational fast Fourier transformation is called RFT method for short.
实运算快速付里叶变换法简称RFT方法。
The essence of two kinds of diffractive process is spatial Fourier transformation.
两种衍射过程的实质是空间傅里叶变换。
The Fourier transformation is used to calculate the propagating constants of the Si waveguides.
应用傅里叶交换法计算了硅光波导中导模的传播常数。
A series of primary pictures are made by optical Fourier transformation and convolution operation.
这种方法是通过对光学傅氏变换所获得的一系列初始图像进行卷积。
Three types of data processing are performed using Fourier transformation and correlation technique.
本文应用富立叶变换与相关技术原理对数据进行了三种方式的处理。
By using Fourier transformation, the original wave-front can be recovered with higher precision and in more details.
在理想情况下，利用离散傅里叶变换及其性质，能精确恢复原始波面。
OBJECTIVE: To differentiate Chinese traditional medicine semen euryales with Fourier transformation infrared spectrum.
目的：用傅立叶变换红外光谱法对传统中药芡实进行鉴别。
Fourier transformation in time domain and frequency domain is one of the main methods for modern railway signal detection.
时域分析和傅氏变换的频域分析方法是现代铁路信号检测的主要方法之一。
IBD algorithm is analyzed, and the space IBD method combined with the IBD method based on Fourier transformation is realized.
分析了IBD算法，并实现了空域IBD和利用傅立叶变换的IBD相结合的算法。
In this paper we present a new technique for accomplishing the Fourier transformation of interferograms via total optical means.
本文提出了用光学处理器完成干涉图的傅里叶变换，从而实现全光学的傅里叶分光光度计的新技术。
We use the theory of Mellin transformation and Fourier transformation to solve the model, then get a new pricing formula ahout it.
利用梅林变换和傅利叶变换技巧，得到了连续支付红利的Black-Scholes期权定价模型的一新解法。
It can describe the whole process of Fourier algorithm vividly and makes the physical concept of Fourier Transformation more clear.
它能形象地描述富氏算法的整个过程，使得富立叶变换的物理概念比较清晰。
A study was performed on the PIV algorithm based on fast Fourier transformation (FFT), and the PIV program was compiled and verified.
在粒子图像测速原理的基础上研究了基于快速傅立叶变换的粒子图像测速算法，并编制算法程序进行验证。
A method of using fast Fourier transformation (FFT) to calculate the frequency characteristics of discrete mathematical model is introduced.
介绍了利用快速富里叶变换(FFT)计算离散数学模型频率特性的方法。
In traditional theory of signal and system, the relationship between single side Laplace transformation and Fourier transformation exists faults.
在传统的信号与系统理论中，单边拉氏变换和傅氏变换关系存在瑕疵。
Methods: Attenuation Reflection-Fourier transformation infrared spectrometry with clustering analysis was used to the identification of Aarons beard.
方法：衰减全反射-傅立叶变换红外光谱法结合聚类分析方法定性鉴别金丝桃属药材。
This paper analyses the matrix representation of discretion convolution, discretion correlation, discretion Fourier transformation and their relations.
分析了离散卷积，离散相关，离散傅氏变换的矩阵形式，以及各矩阵形式间存在着密切的关系。
Attenuation reflectance Fourier transformation infrared spectrometry (ATR FTIRs) combined with clustering analysis was used to identify genus Zanthoxlum.
本实验采用衰减全反射傅立叶变换红外光谱法结合聚类分析方法定性鉴别花椒属生药材。
As is well known to everybody, the Fourier transformation is a validly mathematical tool in the research of wave theory and the revelation of its essence.
众所周知，傅氏变换是研究物理波动现象、揭露其本质的一种有力的数学工具。
Heart sound is a highly nonstationary signal, and the Short-time Fourier Transformation (STFT) is an effective method for this kind of signal to be analysed.
心音信号是一种典型的非平稳信号，短时傅立叶变换(STFT，又称窗口傅立叶变换)是用于对非平稳信号进行时频分析的有效工具。
The effect resistance between two arbitrary nodes in an infinite square lattice with two binds resistors is calculated using the finite Fourier transformation.
应用有限傅立叶变换，导出两套不同阻值电阻组成的平面正方形无限网络任意两节点间等效电阻的积分表达式。
In order to analyze the stability of fuzzy control systems, the description function of fuzzy controller is calculated by using the fast Fourier transformation.
提出用快速傅立叶变换计算二维模糊控制器的描述函数，并用来判别模糊控制系统的稳定性。
The "atomic" algorithm performs decoding process using Fourier transformation only once and the integral Fourier transformation works without floating operation.
“原子”解码算法只通过一次傅氏变换即完成解码；而整数傅氏变换避免了傅氏变换中最耗时的浮点运算。
Methods Time-frequency domain method was used to effectively recognize TEOAEand stimulating artifact by their different short time Fourier transformation (STFT).
方法采用时-频域识别方法，根据TEOAE与刺激伪迹不同的短时谱特征来有效识别两者。
This paper deals with the influence of impulse generating and measuring system on the measurement of lightning impulse front time by Fast Fourier Transformation (FFT).
本文应用快速付立叶变换（FFT）计算分析了冲击发生器与分压器之间的相互作用对全波波头时间测量的影响。
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.
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。
During the acoustic logging data process, the information of time-frequency of related spectral component can not be provided generally by means of Fourier Transformation (FT).
在声波测井资料处理的过程中，傅里叶变换通常不能提供有关谱分量的时间局域化的信息。
Damping model of er fluid which included the viscous and hysteresis damping is established and proved to be effectiveness through Fourier transformation and numerical simulation.
建立了由粘性阻尼和迟滞阻尼组成的电流变流体阻尼模型，通过对模型的傅立叶变换及数值仿真，验证了理论分析及阻尼模型的正确性。
Damping model of er fluid which included the viscous and hysteresis damping is established and proved to be effectiveness through Fourier transformation and numerical simulation.
建立了由粘性阻尼和迟滞阻尼组成的电流变流体阻尼模型，通过对模型的傅立叶变换及数值仿真，验证了理论分析及阻尼模型的正确性。
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