cryptography

粒子滤波算法；粒子滤波算法源于Montecarlo的思想，即以某事件出现的频率来指代该事件的概率。因此在滤波过程中，需要用到概率如P(x)的地方，一概对变量x采样，以大量采样的分布近似来表示P(x)。因此，采用此一思想，在滤波过程中粒子滤波可以处理任意形式的概率，而不像Kalman滤波只能处理高斯分布的概率问题。他的一大优势也在于此。(these codes are particle filter resources codes which solve non-linear estimation problems.I wish that it is helpful to some people.I am glad to share it with others. )

一次关于用matlab实现的信号处理的文章期刊，希望有所帮助。(Meeting on implementation of signal processing with matlab journal articles, I hope help.)

通用型蒙特卡洛程序MCNP4c的中文教程，详细介绍了软件的使用方法(General-purpose Monte Carlo program MCNP4c Chinese tutorial details the use of software)

为图片进行添加高斯噪声均匀噪声以及椒盐噪声，并且采用a修正的均值滤波和自适应中值滤波进行除噪，并且进行除噪性能判断(Add a picture for uniform noise and Gaussian noise, salt and pepper noise, and the use of a modified mean filter and adaptive median filtering for noise removal, noise removal performance and to determine)

说明：  关于数值积分系列的matlab的源程序代码(Series on the numerical integration of the source code matlab)

关于多径效应的MATLAB仿真程序，共四个。这个matlab代码从两种情况下生成传输信号频域的方面比较。(Multi-path effects on the MATLAB simulation program, a total of four. The matlab code is generated from the two cases signal transmission aspect of frequency domain comparison.)

CDMA业务信道卷积编码实现，根据上下行信道区分生成不同码率的卷积码序列，original_sequence是原始输入序列，channel_select是信道选择参数，其中下行码率为1/2，上行信道为1/3 (CDMA business channel convolutional coding to achieve, according to the distinction between upper and lower line to generate a different channel bit rate of the convolutional code sequence, original_sequence is the original input sequence, channel_select is channel selection parameters, which downlink bit rate of 1/2, upstream channel for the 1/3)

说明：  垂直发射弹道仿真程序(采用四元数法).matlab编写。(Vertical launch trajectory simulation program (using the quaternion method). Matlab prepared.)

人脸识别 PCA和SVM 人脸识别算法，人脸库pgm文件(This fold is a PCA and SVM face recoginise)

dijkstra矩阵算法，可以计算出最短路，第一次上传请见谅~(dijkstra很有用的！)