Matlab_Iris

1）已知2N点实数序列 N=64。用一个64点的复数FFT程序，一次算出 ，并绘出频谱 。 （2）已知某序列 在单位圆上的N=64等分样点的Z变换 。用N点IFFT程序计算 ，绘出图像 。 (1) known 2N-point sequence of real numbers N = 64. With a 64-point complex FFT process, a calculated and mapped the spectrum. (2) known to a certain sequence in the unit circle on the N = 64 sub-samples of the Z transform. N-point IFFT procedures used, the mapped image.)

Watermarking code & their comparison

本程序是在不同小波包基的情况鲁昂下研究峰均功率的程序(This procedure is different from the case of wavelet packet basis of Rouen peak to average power under the procedures)

Display fft. A fast Fourier transform (FFT) is an algorithm to compute the discrete Fourier transform (DFT) and its inverse.

KL展开随机场的程序，利用伽辽金法计算，几个类型的相关函数(The program of KL expansion random field is calculated by Galerkin method)

Solving beam problem

一个自适应软阈值去噪的原程序，很实用，我用它解决了很多问题(An adaptive soft-threshold denoising of the original program)

By using these matlab codes a simple BPSK modulation can be implemented. The format used is Polar NRZ

说明：  实现chirp信号的仿真，帮助初学者更好地理解chirp信号，便于日后的学习(Realize the simulation of chirp signal, help beginners better understand chirp signal, and facilitate future learning)

MATLAB GUI 滚动轴承特征频率计算，输入轴承参数，就可得结果(MATLAB GUI caculate frequency ,input some parameters of rolling bearing,then you can get the answear )