PCA311

文吉尼亚密码的破解和一些算法，供密码学使用(Man Genia password cracking and some of the algorithms used for cryptography)

DBSCAN算法是一种基于密度的算法，进行DBSCAN聚类(simple DBSCAN clustering algorithm，which is based on density.)

说明：  matlab常用函数和规则的例程，对初学者很有帮助。包括编程过程当中很常用到的各种函数以及规则！(Matlab commonly used functions and routines rules, useful for beginners. Includes programming process is very common to the various functions and the rules!)

说明：  Logistic混沌随机序列的MATLAB产生源程序(Logistic chaotic random sequences generated source MATLAB)

calic image compression

C++ Primer Plus, 作者 Stephen Prata 版本6ed, AW, 年份 2012 C++初级学者用书(C++ Primer Plus, Stephen Prata, 6ed, AW, 2012 C++ junior scholars books)

计算三维坐标各点相互距离，结果存在对角阵中(calculate 3D points distance between eachother!)

用来仿真fsk PSK 误码率用来仿真fsk PSK 误码率(simulate the ber of fsk and psk)

说明：  对一幅图像的进行小波包分解，然后提取每一层的系数(image of a pair of wavelet packet decomposition, and then extract the coefficient of each layer)

可实现函数的产生，基本运算，时域频域分析(Generation function, basic operations, time domain frequency domain analysis)