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P. Perona&J. Malik算法的改进算法，以及包括了源图片(P. Perona & J. Malik algorithm algorithm, and includes the source image)

采用有限元的方法求解计算捕捉问题predator-prey (program which applies the finite difference method to estimate solutions of a pair of ordinary differential equations that model the behavior of a pair of predator and prey populations. )

相空间重构,以及绘制相空间图. 程序并不复杂,但运行效果良好.(phase reconstitution, and phase graphic mapping.)

Application of spread spectrum for satellite land mobile systems is difficult in satellite link because of synchronization and providing code or considerable Doppler shift. This is particularly high for LEO satellites. So that, a Doppler shift carrying a frequency in band S can reach to several tens of kHz. To estimate and compensate Doppler, a CW pilot carrier is used. The aim of this study is simulate Doppler frequency estimation using MIMO-OFDM technique. Finally, the proposed algorithm is compared to MMSE algorithm in order to insure its performance.

this document is related with physic method using matlab code

用路径跟踪法求解不等式约束的凸二次规划，即沿着此路径(或邻域)可以逼近问题的最优解。(With the path tracking method for solving inequality constrained convex quadratic programming, that along this path (or neighborhood) can approximate the optimal solution of the problem.)

程序实现用脉冲响应不变法和双线性变换法设计IIR滤波器，包括低通滤波器和高通滤波器，其中采样点N=1600，采样频率Fs=10000.(The same impulse response and bilinear transform IIR filter design, including low-pass filter and a high pass filter, where sampling points N = 1600, the sampling frequency Fs = 10000.)

说明：  基于四阶统计最大化的盲源信号分离技术，可实现复数形式的盲源信号分离，观测混合信号需要大于等于源信号个数(Blind source signal separation technology based on four-order statistical maximization can realize the separation of blind source signal in plural form, and the need to observe mixed signal is greater than equal to the number of source signal.)

用来实现瑞丽分布的MATLAB程序，非常好用的，可以借鉴一下(MATLAB is used to achieve the Ruili distribution program, very easy to use, and can learn from what)

matlab常用函数命令，各个工具箱中所用到的都包括，还有simulator常用仿真命令，(some important function for matlab ,including all of the tool boxes and simulator)