All this method is based on Fourier transform.

这个方法是以富氏变换为基础。

Fourier transform looks at the whole signal at once, Strang says.

“傅里叶变换一次性地考察整个信号，”Strang说。

One is the fast Fourier transform (FFT) accelerated algorithm.

一种是快速傅立叶变换(FFT)加速算法。

“Fourier transform looks at the whole signal at once, ” Strang says.

“傅里叶变换一次性地考察整个信号，”Strang说。

Fast Fourier Transform (FFT) is an effective method to detect harmonic.

快速付立叶变换(FFT)是对谐波进行检测的有效方法。

Fourier transform is the basis for the coherent processing in radar imaging.

雷达成像现均采用基于傅里叶变换的相干处理。

The Fourier transform is a classical method for analyzing signal singularities.

傅立叶变换是分析信号奇异性的传统方法。

Local Fourier transform (LFT) is an important texture feature extracting method.

局部傅里叶变换(LFT)是一种重要的纹理特征提取方法。

A method for storage of color films using Fourier transform holograms isp resented.

本文提出一种利用傅里叶变换全息图存储彩色胶片的方法。

In the field of signal analysis, the DFT (Discrete Fourier Transform) is a well known term.

在信号分析领域，DFT(离散傅立叶变换)是一个常见术语。

Basic theory of spectrum analysis and Fast Fourier Transform (FFT) algorithm are briefly introduced.

简介了频谱分析的基础理论和快速傅利叶变换(FFT)算法。

Fast Fourier Transform (FFT) is a kind of fast computation method of Discrete Fourier Transform (DFT).

快速傅里叶变换(FFT)是离散傅里叶变换(DFT)的快速算法。

The Discrete Fourier Transform (DFT) plays an important role in digital signal processing and many other fields.

离散傅里叶变换（DFT）在数字信号处理等许多领域中起着重要作用。

Theoretical analysis shows that the new deblurring function is the Fourier transform of inverse filtering function.

理论分析证明，此新消模糊函数是逆滤波函数的傅里叶变换。

Single spherical refracting system as the most basic unit for performing fractional Fourier transform was proposed.

提出单球面折射系统可以作为光学分数傅里叶变换的最基本单元。

In this paper, we incorporate Fourier transform with Log-Polar transform to achieve rotation invariant texture analysis.

通过将对数极坐标和傅立叶变换结合，完成旋转不变的傅立叶纹理特征提取。

Physical meaning: the self-correlation function and the energy spectrum density function compose a Fourier transform pair.

物理含义：能量信号的自相关函数与能量谱密度函数构成傅立叶变换对。

A new optical image encryption method using anamorphic fractional Fourier transform and double random phase encoding is proposed.

提出一种利用变形分数傅里叶变换和双随机相位编码对图像加密的方法。

The success of the synthesis of the PEG TEFE silane was confirmed with (1)H NMR and Fourier transform infrared spectroscopy (FTIR).

TEFE硅烷的成功组装已经在（1）H NMR和傅里叶变换红外光谱（FTIR）分析中得到证实。

This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).

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。

In this paper, a technology of implementation of the multichannel fractional Fourier transform (FRT) is proposed using holographic lens array.

提出利用全息透镜阵列来实现多通道分数傅里叶变换技术。

For discrete convolution equation set, generally, people use Fourier transform method to solve. But in some positions, zero frequency will lose.

对于离散卷积方程组，一般采用傅氏变换的方法求解，但在某些特定系数的情况下，零频率丢失。

The critical part of this sight is a holographic optical elements combined with a lensless Fourier transform hologram and a holographic beam transformer.

瞄准具的核心部件是由一块无透镜傅里叶变换位相全息图和一块全息光束变换器组成的全息光学元件。

MIT researchers developed one of the fastest software implementations of the Fourier transform, a technique for splitting a signal into its constituent frequencies.

MIT的研究者开发的最快的傅里叶变化，这一技术可以把信号分解为带有它自身成分的频率。

That s part of what makes Fourier wonderful. Nonetheless, for some signal-processing applications, banded matrices could prove more efficient than the Fourier transform.

那是傅里叶变换美妙的部分，但对于某些信号处理应用来说，带状矩阵可以比傅里叶变换更加高效。

The paper presents a method of motion curve frequency domain filtering in Omni-directional M-mode echocardiography images based on Discrete Fourier Transform (DFT).

介绍一种基于离散傅里叶变换(DFT)的全方向M型超声心动图运动曲线频域滤波技术。