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一种混沌粒子群算法源程序。并附带几个测试函数。非常实用！(Chaos Particle Swarm Optimization of a source. And attached to several test functions. Very useful!)

相位屏法 仿真大气湍流 以及拉盖尔高斯光束传播的光强的相位仿真(Phase screen method Simulation of atmospheric turbulence Light intensity simulation Laguerre-Gaussian beam propagation phase of)

说明：  最近看到有人提问怎样用FFT实现频谱分析，我认为能够进行到频谱分析的人，对于系统研究的深度基本上已经相当不错了。本人今天做了一个例程，发给大家参考一下。 历程主要内容(signal_analyzer.rar)如下： test1.txt 第一列为时间t，0.001s为步长；第二列为系统的输入信号；第三列为系统的输出信号。 signal_analyzer.m首先将test1.txt 的数据读入workspace，然后进行FFT，分析出两信号的频率，输出对于输入的幅值衰减（db），输出对输入的相位差。(The question was asked recently to see the realization of how to use FFT spectral analysis, I think that spectral analysis can be carried out to those who study the depth of the system basically is already quite good. Today I made a routine, distributed to Members for reference. The main contents of the course (signal_analyzer.rar) are as follows: test1.txt the first time as t, 0.001s for the step the second as the system input signal the third as a system output signal. signal_analyzer.m first test1.txt data read into workspace, and then proceed to FFT, analysis of the two signal frequency, output amplitude for input attenuation (db), the output of the input phase difference.)

粒子群算法 粒子群算法 粒子群算法 粒子群算法(Partical Swarm Optimization PSO matlab Partical Swarm Optimization Partical Swarm Optimization Partical Swarm Optimization Partical Swarm Optimization Partical Swarm OptimizationPartical Swarm Optimization)

Extended Kalman Filter Tracking Object in 3-D(Assume that we want to track an object moving in 3-D space with constant velocity. Our instruments observe bearing, range and high(cylindrical coordinates). However, of an interest are rectangular coordinates. Since transformation is non-linear this requires use of extended Kalman filter. Because transformation is non-linear between X,Y and Range,Bearing and linear between Z and high(Z is height), this problems serves as a good comparason of how well extended Kalman filter can perform. By comparing its linear estimation error in Z to non-linear estimations in X and Y, we can judge how non-familiarities effect estimation. )

关于锁相环路的相关仿真，描绘的是一阶锁相环，二阶及三阶的各个特性。(PLL simulation, depicted is a first-order phase-locked loop, the second-order and third-order characteristics.)

该程序用于解决光学领域金属介质膜参数的问题，运行速度快。(The procedures for the settlement of the optical field of metal dielectric film parameter problem, fast running speed.)

Gaussian Filter for images Matlab

迹线法实现轮轨接触，是轮轨接触力及垂向力的基础内容，需要轮轨接触角及型面数据作为初始 内容(Trace method to achieve the wheel-rail contact, is wheel-rail contact force and the vertical force base, you need a wheel-rail contact angle and surface data as the initial content type)

Markov Chain 3,4 states (Simple Markove Chain with 2,3,4 states )