两种衍射过程的实质是空间傅里叶变换。
The essence of two kinds of diffractive process is spatial Fourier transformation.
“傅里叶变换一次性地考察整个信号，”Strang说。
“Fourier transform looks at the whole signal at once, ” Strang says.
雷达成像现均采用基于傅里叶变换的相干处理。
Fourier transform is the basis for the coherent processing in radar imaging.
“傅里叶变换一次性地考察整个信号，”Strang说。
Fourier transform looks at the whole signal at once, Strang says.
对双重傅里叶变换滤波效果、实验参数的优化作了研究。
The effect of double Fourier transform filtering and the optimization of experimental parameters have been studied.
这种方法不需要傅里叶变换透镜以及空间滤波器图案板。
This method does not require any Fourier-transforming lenses and masks for spatial filtering.
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。
In this paper, a technology of implementation of the multichannel fractional Fourier transform (FRT) is proposed using holographic lens array.
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。
A method for storage of color films using Fourier transform holograms isp resented.
建立了基于傅里叶变换光谱技术的光纤光栅色散测量系统。
A fiber Bragg grating dispersion measuring system based on Fourier transform spectroscopy is designed and implemented.
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。
Theoretical analysis shows that the new deblurring function is the Fourier transform of inverse filtering function.
局部傅里叶变换(LFT)是一种重要的纹理特征提取方法。
Local Fourier transform (LFT) is an important texture feature extracting method.
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。
Single spherical refracting system as the most basic unit for performing fractional Fourier transform was proposed.
介绍了一种基于FPGA的傅里叶变换光谱仪动镜速度测量系统。
A speed measuring system of moving mirror for Fourier transform spectrometer (FTS) based on FPGA is introduced.
快速傅里叶变换(FFT)是离散傅里叶变换(DFT)的快速算法。
Fast Fourier Transform (FFT) is a kind of fast computation method of Discrete Fourier Transform (DFT).
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。
The Discrete Fourier Transform (DFT) plays an important role in digital signal processing and many other fields.
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。
A new optical image encryption method using anamorphic fractional Fourier transform and double random phase encoding is proposed.
傅里叶变换光谱学方法是目前红外、远红外波段最重要的一种光谱方法。
Fourier Transform Spectroscopy is now one of the most important and useful spectral methods in infrared and far infrared region.
主要讨论了一种将加紧支撑窗与分数阶傅里叶变换相结合的信号处理方法。
A new method that USES the tight support window signal together with the fractional Fourier transform (FRFT) is discussed.
重点讨论了对傅里叶变换法的精度限制因素，并总结了对其改进的各种途径。
The fundamental limitations that lower the accuracy of Fourier transform method are examined, and improving approaches are discussed correspondingly.
以矩形谱线的光源为例，计算了时间相干度，简要介绍了傅里叶变换光谱学原理。
The author takes light source of the rectangle optical spectrum as an example to calculate time relevant degree and briefly describes Fourier's spectroscopy principle.
将输入图像置于这种全息透镜的前面或后面，均能得到物体的傅里叶变换功率谱。
The Fourier transform power spectrum of input object can be obtained when the input image is placed at the front or back of the hololens.
结合快速傅里叶变换(FFT)技术，可获得通信线上各点的时域暂态横向电压。
The transverse voltage in time domain can be obtained from that in frequency domain by means of FFT.
本文利用傅里叶变换红外光谱结合多种分析方法对杜鹃花植物进行鉴别和分类研究。
In this thesis, Fourier transform infrared (FTIR) spectroscopy combined with some analytical methods was used to classify and identify Plants of Ericaceae.
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。
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。
That s part of what makes Fourier wonderful. Nonetheless, for some signal-processing applications, banded matrices could prove more efficient than the Fourier transform.
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。
The paper presents a method of motion curve frequency domain filtering in Omni-directional M-mode echocardiography images based on Discrete Fourier Transform (DFT).
依据离散傅里叶变换性质，推导出离散傅里叶变换的不变特征，并将其用于人脸图像识别。
Then according to the properties of discrete Fourier transform, it deduces the discrete Fourier invariant features that are employed on facial image recognition.
用傅里叶变换的方法分析了锁模激光器中模式间的相位和振幅涨落对锁模脉冲列特性的影响。
The Fourier transform method has been used to analyze the influence of modal amplitude and phase fluctuations in a mode-locked laser on performance of its output pulse.
用傅里叶变换的方法分析了锁模激光器中模式间的相位和振幅涨落对锁模脉冲列特性的影响。
The Fourier transform method has been used to analyze the influence of modal amplitude and phase fluctuations in a mode-locked laser on performance of its output pulse.
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