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用matlab求解LMI示例，帮助掌握求解LMI的方法，可运行实现(LIM solution via matlab simulation)

显示关键点，返回值为关键点的坐标，尺度，方向，模值，描述符(return the (x,y),scale,derection,size)

SFASEDV DFV SV DF FEVE EF F VD EF E EWCF

基于傅里叶变换的matlab下的二维周期性光子晶体带隙的计算绘图程序，属于冷门资料，网上很少见。(Based on Fourier transform matlab under the two-dimensional periodic photonic bandgap calculation drawing program, belonging to popular information, online rare.)

说明：  一本非常经典的书，INTRODUCTION TO MATLAB FOR ENGINEERING STUDENTS，国外很多著名大学学习Matlab就用的这本教材(This book, INTRODUCTION TO MATLAB FOR ENGINEERING STUDENTS, is a very good book.)

HHT变换的一个程序。。。。。。。。。。。(HHT transform a program. . . . . . . . . . .)

基于解相干的MUSIC源程序,几类空间平滑MUSIC源程序：1、后向空间平滑MUSIC源程序；2、前向空间平滑MUSIC源程序；3、双向空间平滑MUSIC源程序；(Based on decorrelation MUSIC source, several types of spatial smoothing MUSIC source: 1, backward spatial smoothing MUSIC source 2 forward spatial smoothing MUSIC source 3, two-way spatial smoothing MUSIC source )

微分方程模型代码，很多时候差分格式的重写(the function as is code)

MTI，LFM脉冲串信号，对多目标回波进行脉冲压缩，再进行MTI。(MTI, LFM pulse train signal, multi-target echo pulse compression, then MTI.)

说明：  采用PDE法进行灵敏度过滤，实现悬臂梁的拓扑优化(Sensitivity filtering using PDE method to realize topology optimization of cantilever beam)