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Fourier

  • 介绍一些常用的数值计算方法

    介绍一些常用的数值计算方法,包括用FFT计算离散傅立叶(Fourier)变换,kalman滤波,alpha-beida-ganma滤波

    标签: 数值 计算方法

    上传时间: 2014-01-06

    上传用户:sammi

  • FRFT时频变换代码(参考算法:H.M. Ozaktas, M.A. Kutay, and G. Bozdagi.Digital computation of the fractional Fouri

    FRFT时频变换代码(参考算法:H.M. Ozaktas, M.A. Kutay, and G. Bozdagi.Digital computation of the fractional Fourier transform.IEEE Trans. Sig. Proc., 44:2141--2150, 1996.)

    标签: H.M. G. M.A. computation

    上传时间: 2013-12-21

    上传用户:希酱大魔王

  • The frequency domain plays an important role in image processing to smooth, enhance, and detect edg

    The frequency domain plays an important role in image processing to smooth, enhance, and detect edges of images. Although image data typically does not include imaginary values, the fast Fourier transform (FFT) has been used for obtaining spectra. In this paper, the fast Hartley transform (FHT) is used to transform two-dimensional image data. Because the Hartley transform is real valued, it does not require complex operations. Both spectra and autocorrelations of two-dimensional ultrasound images of normal and abnormal livers were computed.

    标签: processing frequency important enhance

    上传时间: 2014-01-08

    上传用户:1051290259

  • An important book that cover wavelet domain. It help a lot in understanding wavelets and their appli

    An important book that cover wavelet domain. It help a lot in understanding wavelets and their applications. Beside explanations of the transform and application of this, there are also presents the reasons why wavelets are better than Fourier transform.

    标签: understanding important wavelets wavelet

    上传时间: 2017-06-14

    上传用户:lanhuaying

  • 一种新的方法

    一种新的方法,可以自动对两幅图像进行 ·Matlab code for encoding an unwrappi ·冈萨雷斯的经典教材数字图像处理的matl ·Fast Fourier Transform ·《Matlab控制系统与应用实例》一书源码 ·Bayesian Compressed Sensing ·永磁同步电动机的空间矢量控制simulink ·Matlab计算信噪比,单声道,双声道均可

    标签:

    上传时间: 2017-06-25

    上传用户:从此走出阴霾

  • 数字控制振荡器(NCO

    数字控制振荡器(NCO,numerical controlled oscillator)是软件无线电、直接数据频 率合成器(DDS,Direct digital synthesizer)、快速傅立叶变换(FFT,Fast Fourier Transform) 等的重要组成部分,同时也是决定其性能的主要因素之一,随着芯片集成度的提高、在信号 处理、数字通信领域、调制解调、变频调速、制导控制、电力电子等方面得到越来越广泛的 应用。

    标签: NCO 数字控制 振荡器

    上传时间: 2017-07-15

    上传用户:nanshan

  • David Vernon is the Coordinator of the European Network for the Advancement of Artificial Cognitive

    David Vernon is the Coordinator of the European Network for the Advancement of Artificial Cognitive Systems and he is a Visiting Professor of Cognitive Systems at the University of Genoa. He is also a member of the management team of the RobotCub integrated working on the development of open-source cognitive humanoid robot. Over the past 27 years, he has held positions at Westinghouse Electric, Trinity College Dublin, the European Commission, the National University of Ireland Maynooth, Science Foundation Ireland, and Etisalat University College. He has authored two and edited three books on computer vision and has published over eighty papers in the fields of Computer Vision, Robotics, and Cognitive Systems. His research interests include Fourier-based computer vision and enactive approaches to cognition. He is currently a Professor at Etisalat University College in Sharjah-United Arab Emirates, focusing on Masters programs by research in Computing fields.".[1]

    标签: the Coordinator Advancement Artificial

    上传时间: 2014-01-08

    上传用户:netwolf

  • fft analysis

          Use the fast Fourier transform function fft to analyse following signal. Plot the original signal, and the magnitude of its spectrum linearly and logarithmically. Apply Hamming window to reduce the leakage.   .   The hamming window can be coded in Matlab as   for n=1:N hamming(n)=0.54+0.46*cos((2*n-N+1)*pi/N); end;   where N is the data length in the FFT.

    标签: matlab fft

    上传时间: 2015-11-23

    上传用户:石灰岩123

  • A pipeline fast Fourier transform

    一中流水线结构的FFT,构建的一中新的FFT,基于流水线结构使得其运行速度更快,更适合实用。

    标签: transform pipeline Fourier fast

    上传时间: 2018-03-26

    上传用户:lpyaking

  • Hybrid+Analog-Digital+Precoding

    In this paper we revisit hybrid analog-digital precoding systems with emphasis on their modelling and radio-frequency (RF) losses, to realistically evaluate their benefits in 5G system implementations. For this, we decompose the analog beamforming networks (ABFN) as a bank of commonly used RF components and formulate realistic model constraints based on their S-parameters. Specifically, we concentrate on fully-connected ABFN (FC-ABFN) and Butler networks for implementing the discrete Fourier transform (DFT) in the RF domain. The results presented in this paper reveal that the performance and energy efficiency of hybrid precoding systems are severely affected, once practical factors are considered in the overall design. In this context, we also show that Butler RF networks are capable of providing better performances than FC-ABFN for systems with a large number of RF chains.

    标签: Analog-Digital Precoding Hybrid

    上传时间: 2020-05-27

    上传用户:shancjb