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dsnonoise
- 直接序列扩频系统是在发端直接用具有高码率的扩频编码去扩展信号的频谱，而在收端用相同的扩频编码进行解扩使扩频信号还原为原始信号的一种扩频方式。直接序列系统中用的编码序列通常是伪随机序列或叫伪噪声（PN）码。要传送的信息经数字化后变成二元数字序列，它和伪随机序列模二相加(或相乘)后变成复合码去调制载波。在直接序列系统中通常对载波进行二进制相移键控调制(BPSK)。当扩频调制后由天线发射出去，在接收机中要有一个和发射机中的伪随机码同步的本地码，对接收信号进行解扩，解扩后的信号送到解调器取出传送的信息-
Fourier
- 编写一个程序计算并显示一幅二维图象的Fourier变换（幅度和相位谱）及其逆变换，要求用FFT实现-procedures for the preparation of a calculation and display a two-dimensional image of the Fourier transform (amplitude and phase spectrum) and its inverse transform, called for using the FFT
ppfxy
- 频谱分析仪，相位变化 ，幅频变化 ，功率谱波形-Spectrum analyzer, phase changes, amplitude and frequency changes, power spectrum waveforms
dft
- 图像的傅里叶变换。在代码中实现了将两幅图像的幅度谱和相位谱进行交换，进而理解两者在图像显示中的作用-Fourier transform of the image. Implemented in the code will be two images amplitude spectrum and phase spectrum of exchange, and thus to understand both the role of the image display
Image-Enhancement
- 交换两幅图像的相位谱，利用频域滤波消除周期噪声！-Exchange of two images of the phase spectrum, using frequency domain filtering periodic noise elimination!
fft
- 使用MATLAB对特定信号进行频谱分析，画出幅度和相位谱的图像，并包含卷积运算和验证程序-Using MATLAB on a specific signal spectrum analysis, to draw the image amplitude and phase spectrum, and includes convolution and verification procedures
image-fft
- 对两幅图像作FFT变换，然后交换两幅图像的幅度谱和相位谱，然后通过逆fft变换还原图像，得到原图和变换后图像的对比，得出图像的幅度谱和相位谱哪个更重要的结果，注意图形是8位灰度图，尺寸大小必须一样-Exchange of the two images of the amplitude spectrum and phase spectrum and inverse FFT transform to restore
Matlab-GUI_image2
- 使用Matlab GUI界面编写的图像傅立叶变换程序,实现功能有：图像的打开、保存、图像旋转、X轴、Y轴平移，并画出图像的幅度谱和相位谱。-Matlab GUI interface using Fourier transform image prepared procedures to achieve functions: image open, save, image rotation, X-axis, Y-axis translation, and draw the image amplit
code
- 频域图像增强，交换两幅图像的相位谱，利用频域滤波消除周期噪声-Frequency-domain image enhancement, image exchange two phase spectrum, frequency domain filtering to eliminate periodic noise
01
- 对图片进行傅里叶变换得到相位谱，并通过逆傅里叶变换得到原图片-Fourier transform of the image phase spectrum, and by the inverse Fourier transform of the original image
tuxiangchuli
- matlab下图像处理中幅度谱相位谱以及图像重构的例子。-An example of amplitude spectrum phase spectrum and image reconstruction in image processing under matlab.
1
- 通过编程实现图像相角图、频谱图的重建以及交叉重建。-Through the programming to achieve the image phase angle map, spectrum reconstruction and cross reconstruction.
DigitalImage
- 将两张图像和两段音频幅度谱和相位谱进行交换，显示最后结果，使用python语言，开发环境等信息详见readme.txt(The two images and two segment audio amplitude spectrum and phase spectrum are exchanged, and the final results are displayed. The information of the environment, such as the python language