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编写的matlab程序，主要介绍如何提取信号的线谱的方法(Written in matlab program introduces how to extract the signal of line spectrum method)

粒子群算法 Matlab编程实现 这个程序就是最基本的粒子群优化算法程序，用Matlab实现，非常简单。只有几十行代码。 (Particle swarm algorithm Matlab programming, this program is the basic particle swarm optimization algorithm procedures, using Matlab, very simple. Only a few dozen lines of code.)

小波变换进行变速箱故障诊断 首先将s1和s2信号时域谱（s1代表维修前的振动信号，s2代表维修后的振动信号），画出来进行对比，会发现s1信号的振动幅值会比较高；然后对s1和s2分别进行小波分解并画出各层的时域谱，只对比s1和s2分后的最高时域谱，s2更加的具有周期性，且幅值较小，s2周期性不够明显，且振动过于密集。分析完时域谱后开始分析频谱，首先对原信号s1和s2fft转换，得到频谱图，如图，然后再对小波分析后高频部分进行fft转换，做出频谱图。对比后我们发现，在f 2375HZ出（也就是齿轮的啮合频率），s1信号频谱幅值会有急剧的升高，然后，其谐波的幅值也会增大。所以可以推断出该维修前的增速箱的齿轮可能出现问题。(Gearbox fault diagnosis based on wavelet transform s1 and s2 first time domain signal spectrum (s1 behalf of the vibration signal before maintenance, vibration signal s2 representative of repaired), drawn comparison, you will find a signal s1 vibration amplitude will be higher then s1 and s2 respectively wavelet decomposition and draw the layers of time-domain spectrum to only a maximum time domain spectroscopy s1 and s2 points after, s2 is more cyclical and smaller magnitude, s2 cyclical enough obviously, and the vibration is too dense. End domain spectral analysis after the beginning of the spectrum analysis, the first of the original signal s1 and s2fft conversion to give the spectrum, as shown, and then after the high frequency part of wavelet analysis fft transformation to make spectrum. We found that after the comparison, at f 2375HZ out (i.e. the gear mesh frequency), there will be a sharp increase in the amplitude spectrum of the signal s1, and then, the amplitude of the ha)

A quantitative analysis of perimeter roughness is carried out to illustrate the degree of roughness of input images.

遗传算法的matlab仿真，分析遗传算法的各个因子变化的影响。(The genetic algorithm matlab simulation, analysis of the impact of changes in genetic algorithm factor.)

自由电子激光，超短束团，滑移计算，matlab模拟(free-electron laser, ultrashort bunch, slip, Matlab simulation)

蚁群算法LF解决聚类问题,程序文章比较全面，已测试！！！(LF ant colony algorithm to solve clustering problems, the article is more comprehensive program has been tested! ! ! )

关于低密度奇偶校验码的生成，采用matlab编写，主要是校验矩阵的产生 (on low-density parity-check code generation, prepared using Matlab, mainly for the selection of calibration matrix)

雷达系统仿真分析,实现MTI，MTD脉压等各项操作(simulation of radar system)

说明：  模拟退火算法的MATLAB实现，通过赋予搜索过程一种时变且最终趋于零的概率突跳性，从而可有效避免陷入局部极小并最终趋于全局最优的串行结构的优化算法。(MATLAB implementation of simulated annealing algorithm, a search process by giving time-varying and ultimately tends to zero the probability of jumps, which can effectively avoid local minima and ultimately global optimization algorithm has been optimized serial structure.)