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本代码是单相正弦电压锁相环程序，用于根据单相正弦电压生成其相位角度信息，包括：正交处理、坐标变换、PI运算、积分运算、取模运算等步骤。(This code is a single-phase sinusoidal voltages phase-locked loop program for generating the phase angle information based on single-phase sinusoidal voltage, comprising: an orthogonal processing, coordinate conversion, PI operation, integral operation, the modulo operation and other steps.)

MATLAB编写，计算卫星运行轨道，显示星下点轨迹，适用范围较广。(Preparation of MATLAB, the calculation of satellite orbit, display a ground track, wide range of application.)

matlab code for run the algorithm of Locality Preserving Projection

说明：  ：DBSCAN是一个基于密度的聚类算法。该算法将具有足够高密度的区域划分为簇，并可以在带有“噪声”的空间数 据库中发现任意形状的聚类。但DtLqCAN算法没有考虑非空间属性，且DBSCAN算法需扫描空间数据库中每个点的e一 邻域来寻找聚类，这使得DBSCAN算法的应用受到了一定的局限。文中提出了一种基于DBSCAN的算法，可以处理非空 间属性，同时又可以加快聚类的速度。(: DBSCAN is a density-based clustering algorithm. The algorithm has a sufficiently high density area is divided into clusters, and to be with the &quot noise&quot found in the spatial database clusters of arbitrary shape. But DtLqCAN algorithm did not consider non-spatial attributes, and spatial database DBSCAN algorithm to be scanned for each point e in the neighborhood to find a cluster, DBSCAN algorithm which makes the application subject to certain limitations. In this paper, an algorithm based on DBSCAN can handle the non-spatial attributes, can also speed up the clustering speed.)

调用matlab中的ode45函数解微分方程，ode45解方程方法用的是四阶五级的龙哥库塔法(Call the matlab ode45 function solving differential equations, ode45 solve the equation method of fourth order with is the fifth longge coulthard method )

matlab教程对于初学者有一定的帮助，我也是一个初学者，希望能互相学习互相帮助(Matlab for Beginners Guide will help, I am also a beginners hope to learn from each other to help each other)

some genetic algorithmes

一种形态学滤波器，供大家下载交流使用，谢谢(A morphological filter, for everyone to download the exchange of use, thank you )

完全符合IEEE802.11a的卷积编码和维特比译码，注释丰富，易于理解和调试。(this program is based on the principle of IEEE802.11a,which has necessary note and is easy to debug. )

说明：  用PSO算法对PID参数进行整定,对P、I、D三个参数进行合适值选择(Tuning PID parameters with PSO algorithm)