yuanzhu1

calculate Gaussian filter for images using matlab

说明：  经典图书Courant, Hilbert - Methods of Mathematical Physics 第二卷，50年不倒的经典图书，值得一看，是学习数学物理方法的经典名著(Classic books Courant, Hilbert- Methods of Mathematical Physics II, 50 years will not be brought down classic books, worth a visit is to study methods of mathematical physics classics)

程序主要包含幂级数展开逼近余弦及在同一坐标下显示多个曲线。压缩包中还包含相关的参考资料。(Program mainly includes power series expansion approximation cosine and displayed in the same coordinate multiple curves. Compressed package also contains the associated reference materials.)

FastCSMatrix: The operator form of the contraint matrix for the fast compressed sensing problem. Specifically, it returns y = A*x (mode = 1) or y = A *x (mode = 2), where A is an mxn matrix given by A = [Phi - Phi], and Phi = P*H*Q, where P,Q are random permutation matrices, and H is a fast Hadamard/Fourier operator.

读取FEKO中导出的极化数据并进行SAR成像。(SAR image)

离散信号的时域分析，输出各种离散信号的波形图，有利于各初学者理解揣摩(Time domain analysis of discrete signals, the output waveform of various discrete signals, try to figure out is conducive to the beginner to understand)

说明：  用matlab提取语音信号，并进行处理，提取语音信号的特征参数(programed by matlab ,a very good thing)

该段matlab可实现自由摆系统的演示。(The segment can be realized matlab free pendulum system demonstration.)

convolution code with matlab and simulink

说明：  HHT仿真，并且对此有一定的改进，HHT仿真，并且对此有一定的改进(HHT simulation, and certainly have improved, HHT simulation, and certainly have improved)