Meschach computes Fast Fourier Transforms, extracts columns and rows, and computes eigenvalues of symmetric matrices. Meschach能计算快速傅立叶变换(FastFourierTransform)、提取列和行以及计算对称矩阵的特征值。
The molecular interactions in CC were characterised by dilute solution viscometry, Fourier transform infrared spectroscopy and X-ray diffraction. 文中通过稀溶液黏度法、红外和X射线衍射法对胶原与壳聚糖分子间作用力进行了表征。
For synthetic aperture digital lensless Fourier transform hologram, a screen-division reconstruction method is proposed based on theoretical analysis. 针对合成孔径数字无透镜傅里叶变换全息图,在理论分析的基础上,提出了相应的分幅再现算法。
Studies on Algorithms for discrete fractional Fourier transform ( DFRFT) and its applications 分数傅里叶变换离散化(DFRFT)算法和应用研究
The original image was reconstructed exactly through the inverse Fourier transform to the coded image. 对编码的实值图像作逆傅里叶变换,可以准确地重建原图像。
Research on the Application of Fractional Fourier Transform in Transient Signal of Power System 分数阶Fourier变换在电力系统暂态信号分析中的应用研究
Universal Calculation Formula and System Calibration Method in Fourier Transform Profilometry 傅里叶变换轮廓术中一种普适的计算公式和系统标定方法
Its simple realization using discrete Fourier transform ( DFT) is also discussed. 用离散傅里叶变换实现DMT,简化了其实现的复杂性;
Measuring and analyzing technology based on variable-time-interval Fourier transform was dealt with for vehicle accelerating noise signal. 提出了基于变时基短时傅里叶变换来分析和处理时变信号的技术。
The Research of Seismic Signal Analysis Method Based on the Fractional Fourier Transform 基于分数阶傅氏变换的地震信号分析方法研究
Time-frequency Analysis Methods Based on Short-Time Fourier Transform and Wavelet Transform 基于短时傅立叶和小波变换的时频分析
The One-Lens and Two-Lens Fractional Fourier Transform System with the Media 含介质的单透镜和双透镜分数傅里叶变换光学系统
This paper proposed a new method to estimate voltage flicker using the discrete Fourier transform ( DFT). 本文提出一种基于离散傅里叶变换(DFT)估计电压闪变的新方法。
Phase-space analysis for fractional Fourier transform of first-order optical system 一阶光学系统分数傅里叶变换的相空间分析
Design and Analysis of Optical Image Encryption Algorithms with Fractional Fourier Transform 基于分数傅里叶变换的光学图像加密算法设计与分析
Window functions, interpolation and Fourier transform recursive algorithm for improving the harmonic analysis of power system 改善电力系统谐波分析的加窗插值算法和递推傅氏算法
Study on Optimization of Parameter Selection in Fourier Transform Profilometry Fourier变换轮廓术中参数的选择和优化研究
Harmonic Analysis of Power Grid Based on Wavelet Transform and Fast Fourier Transform 基于小波变换和快速傅立叶变换的电网谐波分析
Fourier transform lens is key operating element in optical information processing system. 在光学信息系统中,傅立叶变换透镜是关键的运算部件。
The fast Fourier transform algorithm for the production of the permutation factor circulant matrices; 给出了一类置换因子循环线性系统求解的一种快速算法。
Fourier transform infrared ( FTIR) spectra of chloroform gas with different concentrations were measured under different resolutions. 测量了不同分辨率下不同浓度氯仿气体的傅里叶变换红外光谱(FTIR)。
A two-dimensional phase unwrapping approach based on two-dimensional windowed Fourier transform ( WFT) is proposed. 提出了一种基于二维短时傅里叶变换的干涉相位图解缠方法。
Research on Harmonic Detection Methods Based on Wavelet Transform and Fourier Transform 基于小波变换与傅立叶分析的谐波检测方法研究
Fourier transform wavelet transform optical information processing. 标签傅里叶变换小波变换光学信息处理。
To improve the performance of Fourier transform spectrometer, precise position and position error measurement methods are proposed. 为提高傅里叶变换光谱仪的性能,提出了一种精密的激光干涉信号位置及位置偏差提取方法。
A point-diffraction interferometry was presented based on Fourier transform instead of the phase-shifting point-diffraction interferometry. 在相移算法的点衍射干涉术的基础上,提出了基于傅里叶变换的点衍射干涉测量术。
Application of the Fractional Fourier Transform to Target Detection and Imaging in SAR 分数阶Fourier变换在SAR目标检测和成像中的应用研究
The Fourier transform characteristics of off-axis hololens was discussed, which was made by using a dot light source and an inclined parallel light. 利用一点光源和一束倾斜平行光拍摄了一种离轴全息透镜,并对其傅里叶变换特性进行了分析。
The best harmonic detection windowed Fourier transform function is achieved through experiments comparison. 通过实验比较总结出谐波检测最佳的傅立叶变换加窗函数。
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。