HHT

costas环的simulink实现，可以直接在matlab上运行实现通信系统中的载波同步，对于学习或设计通信系统有很大帮助(simulink realization of costas loop that can run directly on the matlab implementation of carrier synchronization in communications systems, communications systems for the study or design of great help)

任意时间任意经纬度太阳方位角高度角计算程序(Latitude and longitude of the sun at any time of any azimuth elevation angle calculation program)

对DAN序列，进行各种matlab曲线拟合图像(DAN sequences for the various matlab curve fitting image)

Curve Fitting With Matlab

八皇后问题，用matlab解决八皇后问题，以及多皇后问题，采用追溯法(Eight queens problem)

四种聚类算法源代码及示例代码,本程序的最终目的是形成一套标准的用于聚类、可扩展的工具。包括的内容有1. 聚类算法：Kmeans和Kmedoid算法、FCMclust, GKclust, GGclust算法 2. 评估分类原型：程序可以在二维图像上绘制出聚类的结果 3. 验证：程序给每一个算法提供验证机制，每个聚类算法会统计(Partition Coefficient (PC), classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni s Index (XB), Dunn s Index (DI) and Alternative Dunn Index (DII)几种衡量指标。-Four kinds of clustering algorithms source code and sample code, the ultimate goal of this program is to form a set of standards for clustering, scalable tools. Including the contents of a. Clustering algorithm: Kmeans and Kmedoid algorithms, FCMclust, GKclust, GGclust algorithm 2. Assessment classified prototypes: programs can be plotted in two-dimensional image, the results of clustering 3. Verify: Program to provide an algorithm to each authentication mechanism, each clustering algorithm will calculate Partition Coefficient (PC), classification Entropy (CE), Partition Index (SC), Separation Index (S), Xie and Beni s Index (XB), Dunn s Index (DI) and Alternative Dunn Index (DII) of several metrics.)

在加噪声的情况下，利用pso（粒子群算法）辨识NARMAX模型(实例一）(In the case of additive noise, the use of pso (PSO) identify NARMAX model (Example I))

说明：  病态矩阵HILBERT，正则化高斯消元法，cholesky分解法(Ill-conditioned matrix HILBERT, regularization of Gaussian elimination method, cholesky decomposition)

频率估计中的协方差算法的matlab实现(Frequency estimation of covariance algorithm matlab implementation)

上述代码对光纤通信系统中的常用NRZ码时域和频域特性进行了分析，NRZ适于短距离低速率光纤通信系统中使用，其频谱特性相对于RZ码频谱较窄，但峰值功率较高，对非线性容忍度较小(NRZ,modulation,PMD analysis)