crazyclimber

说明：  很详尽的傅里叶变换课件，可以学习下，适合初学者。(Fourier transform is very detailed courseware, you can study, one for beginners.)

matlab实现arnold图像置乱进行图像加密和解密(matlab arnold)

小波分析由于具有同时分析信号时域和频域的特性，所以使用小波分析技术对检测的信号进行变换，然后对具有故障特性的信号进行重构，最后通过希尔伯特变换进行解调和细化频谱分析，从而轴承中的故障信息成分就可以检测出来，以判断轴承发成故障的部位。(Wavelet analysis has the characteristics of both time and frequency domain, so the wavelet analysis technique is used to transform the signal, then the signal is reconstructed. Finally, the fault information components of the bearing can be detected by Hilbert transform.)

复化梯形函数，复化辛普森函数，龙贝格函数matlab算法(Complex trapezoidal function, complex function Simpson, dragon berg function matlab algorithm)

simulates a frequency selective channel

LCMV优化设计阵列处理信号，均值便宜跟踪的示例，小波包分析提取振动信号中的特征频率。( LCMV optimization design array signal processing, Example tracking mean cheap, Wavelet packet analysis to extract vibration signal characteristic frequency.)

说明：  噪声射频干扰信号的matlab仿真实现，其中包含成像的提取程序(SAR radio frequency jamming signal)

machine dc mfile

This file contains an introduction to the PSCAD/EMTDC software tools using to simulate the power system in wind power. Good simulation models are provided in this document with real system data.

image and signal processing are used mostly right now. these programs is related to image processing. Image negative is used for the getting the negative image of the original image. and contrast stretching is for the give the middle value. Fast Fourier Transform program is used for the getting FFT of the signal.