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。
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 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。
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。
The method is compared to the traditional FFT(Fast Fourier Transformation)analysis. The feasibility of analyzing the engineering measure data using wavelet transformation is discussed in this paper.
并将该方法与传统快速傅立叶变换分析结果进行比较，探讨了使用小波变换对工程实测数据进行分析的可行性。
The method is compared to the traditional FFT(Fast Fourier Transformation)analysis. The feasibility of analyzing the engineering measure data using wavelet transformation is discussed in this paper.
并将该方法与传统快速傅立叶变换分析结果进行比较，探讨了使用小波变换对工程实测数据进行分析的可行性。
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