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The program RANDOM_WALK_2D_PLOT plots the trajectories of one or more random walks. The program RANDOM_WALK_2D_SIMULATION plots averaged data for any number of random walks that each use the same number of steps. The data plotted is the average and maximum of the distance squared at each time step. The average distance squared should behave like the number of time steps.

现有的代数特征的抽取方法绝大多数采用一维的方法，即首先将图像转换为一维向量，再用主分量分析（PCA）,Fisher线性鉴别分析（LDA）,Fisherfaces式核主分量分析（KPCA）等方法抽取特征，然后用适合的分类器分类。针对一维方法维数过高，计算量大，协方差矩阵常常是奇异矩阵等不足，提出了二维的图像特征抽取方法，计算量小，协方差矩阵一般是可逆的，且识别率较高。(existing algebra feature extraction method using a majority of the peacekeepers, First images will be converted into one-dimensional vector, and then principal component analysis (PCA), Fisher Linear Discriminant Analysis (LDA), Fisherfaces audits principal component analysis (KPCA), and other selected characteristics, then use the appropriate classification for classification. Victoria against an excessive dimension method, calculation, covariance matrix is often inadequate singular matrix, a two-dimensional image feature extraction method, a small amount of covariance matrix is usually reversible, and the recognition rate higher.)

用Python/SciPy实现的卡尔曼滤波算法 将该算法用Matlab语言重新写了一遍的源代码(Using Python/SciPy realize the Kalman filter algorithm of the Matlab language algorithm used to re-write the source code again)

数字信号系统中的简单函数的离散傅里叶变换。(DFT of a simple function in DSP.)

信号预处理，对于信号的一些干扰进行排除——(Signal preprocessing for signal interference exclude-)

MATLAB gui新手必备的，常用的一些控件回调函数程序段。(The MATLAB gui novice must, commonly used control callback function block.)

qpsk调制解调，功率谱密度，误码率曲线，和MPSK的比较(qpsk modem, power spectral density, the error rate curve, and comparison of MPSK)

说明：  自编：张贤达《数字信号处理》习题4.26的MATLAB程序。加入了一个GUI界面。 在MATLAB下运行MDSP。 要求MATLAB7以上版本，否则GUI无法运行(self : Automation, "Digital Signal Processing" Exercise 4.26 MATLAB. Adding a GUI interface. MATLAB running MDSP. MATLAB7 version of the above requirements, otherwise unable to run GUI)

说明：  瑞利、韦伯、对数等分布的密度图、功率图等的雷达杂波的matlab仿真程序(Rayleigh, Weber and logarithm of the density distribution, power plans, such as radar clutter simulation program matlab)

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