片语

parallel fast-Fourier transform平行快速富氏转换

fast discrete fourier transform快速离散傅里叶变换

fast adaptive Fourier transform快速自适应付里叶变换

fast Fourier transform subroutine快速傅立叶变换次例程

Fast Fourier Transform DLTS快速傅里叶变换深能级瞬态谱

fast Fourier transform algorithm快速傅立叶变换演算法

fast Fourier transform implementation快速傅立叶变换实施

The fast Fractional Fourier Transform土耳其算法

fast Clifford Fourier transform快速Clifford傅立叶变换

英汉例句

• the algorithm of twodimensional discrete fast fourier transform is described and a new approach of image enhancement and image restoration in frequency domain by using this algorithm is also proposed.

  研究了二维离散快速傅立叶变换算法，以及利用该算法在频率域中进行图像增强和图像复原的新方法。

• with the development of dsp, the fast fourier transform (fft) is used widely.

  随着dsp技术的发展，快速傅里叶变换（fft）的应用越来越广泛。

• with the advent of digital mini-computers and the fast fourier transform (fft) in the 1960「s, the modern era of experimental modal analysis began.

  1960年，随着数字小型计算机和快速傅里叶变换（fft）的出现，开启了试验模态分析的现代化时代。

• one is the fast fourier transform (fft) accelerated algorithm.

  一种是快速傅立叶变换（fft）加速算法。

• fast fourier transform (fft) is the main algorithm for harmonic analysis in electric power system, but when there is the decaying dc component in input signal, fft algorithm will have higher error.

  快速傅里叶变换（fft）是电力系统进行谐波分析的主要算法，但当输入信号中含有衰减直流分量时，fft算法会产生较大的误差。

• since the sensitivity of nonuniform coupled transmission lines with nonlinear loads is hard to analyze, a new method based on fast fourier transform is proposed.

  针对具有非线性负载的非均匀耦合传输线瞬态响应灵敏度分析困难的问题，提出了一种采用快速傅里叶变换的灵敏度分析方法——傅里叶变换法。

• fast fourier transform has been applied for computing the cross-correlation of seismic surface waves for records at two stations.

  应用了快速傅氏变换计算两个台记录的地震面波的互相关函数。

• fast fourier transform is used to convert the time series of pressure into frequency domain for the study of leakage frequency feature.

  为了能够表现出泄漏信息在频域中的特性，本文应用快速傅里叶变换的方法将指定点处的压力值进行频域转换。

• romberg-fast fourier transform (r-fft) integration algorithm based on fast fourier transform (fft) and numerical integration theory was proposed for modal superposition method.

  基于快速傅里叶变换（fft）和数值积分理论，提出了一种应用于振型叠加法的龙贝格快速傅里叶变换（r-fft）积分算法。

• since the fast fourier transform (fft) was presented, the harmonics measurement based on fourier transform which requires synchronous sampling has been used widely.

  自提出快速傅里叶变换算法（fft）以来，基于傅里叶变换的谐波测量便得到了广泛应用。

• in the current experiment, the team sent their signals down 50km of optical fibre and then implemented what is known as an optical fast fourier transform to unpick the data streams.

  在这儿，研究者们采用一种被称为光学快速傅里叶变换的方法来分离出数据流。

• spatial and temporal frequency tuning characteristics of the pattern electroretinogram (perg) were analysed by means of the fast fourier transform (fft)technique.

  用快速傅里叶转换（fft）技术分析了图形视网膜电图（perg）的空间和时间调谐特性。

• the normalized full gradient and phase of gravity anomalies have been studied by potential field conversion and fast fourier transform in wave-number domain.

  用波数域的位场转换和快速傅立叶变换理论研究重力归一化总梯度和归一化相位；

• experimental results show that this method achieves the same accurate level as classic fast fourier transform (fft) based method with invariance to illumination change and lower computation costs.

  实验结果表明该算法相对传统基于快速傅立叶变换法具有同等精度、抗光照变化及计算量少的特点。

• the error of the decimate in time (dit) radix-2 fast fourier transform (fft) is analyzed, where the data format is two」s complement.

  分析了按时间抽取（dit）基-2快速傅里叶变换（fft）的误差，数据格式为二进制补码。

• meanwhile, data of complete time domain waveform is needed in order to calculate accurate s-parameters of frequency domain via fast fourier transform (fft).

  而要通过快速傅立叶变换（fft）获得準确的频域参数，又必须得到完整的时域波形数据。

• then, the author analysed it by various means of obtaining frequency and ultimately chose the fast fourier transform to seek frequency.

  最后多种求频率手段进行了分析。最终选择快速傅里叶变换求频率。

• on the basis of the features of the fast fourier transform (fft) and digitally modulated signals, this paper proposes a blind channel estimation algorithm.

  根据快速傅里叶变换（fft）和数字信号调制解调的特点，给出了一种盲信道质量估计算法。

• the dsp also deal with the display data transmitted from primary cpu, such as the vector display of channel signal, fast fourier transform (fft) applied to it and so on.

  dsp还可以完成通道信号波形数据处理（点显示、矢量显示和平均余晖等）和简单的快速付立叶变换运算等功能。