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• All this method is based on Fourier transform.

这个方法是以富氏变换为基础。

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

里叶变换一次性地考察整个信号，”Strang

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

一种快速傅立叶变换(FFT)加速算法

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• 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

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

快速付立叶变换(FFT)谐波进行检测有效方法

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

雷达成像现均采用基于里叶变换相干处理

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

傅立叶变换分析信号奇异性传统方法

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

局部傅里叶变换(LFT)一种重要纹理特征提取方法

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• 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方法

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

信号分析领域DFT(离散傅立叶变换)一个常见术语。

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

简介频谱分析基础理论快速傅利叶变换(FFT)算法

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

快速里叶变换(FFT)离散傅里叶变换(DFT)快速算法

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• 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数字信号处理许多领域中起重要作用

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

理论分析证明消模糊函数滤波函数傅里叶变换

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

提出球面折射系统可以作为光学分数傅里叶变换基本单元

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

通过对数极坐标傅立叶变换结合，完成旋转不变的傅立叶纹理特征提取。

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• 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相关函数能量密度函数构成傅立叶变换

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

提出利用变形分数傅里叶变换随机相位编码图像加密方法

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

TEFE硅烷成功组装已经1HNMR傅里叶变换红外光谱（FTIR）分析中得到证实

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• 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)频谱分析方法，计算流量信号频率相位差

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• 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实现多通道分数傅里叶变换技术

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• 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方法求解某些特定系数的情况下，频率丢失

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

瞄准的核心部件块无透镜傅里叶变换位相全息一块全息光束变换器组成全息光学元件

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

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

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

里叶变换美妙部分对于某些信号处理应用来说带状矩阵可以傅里叶变换更加高效

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

介绍基于离散傅里叶变换(DFT)全方向M型超声心动图运动曲线滤波技术。

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

介绍基于离散傅里叶变换(DFT)全方向M型超声心动图运动曲线滤波技术。

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