modulation

根据已知的三维离散数据（x,y,z）,在MATLAB中利用此函数进行三维曲面拟合，再根据polyval2d得出拟合函数的系数矩阵。(according to 3D discrete datum (x,y,z),use this function in MATLAB to fit 3D surface, and use polyval2d to get coefficient matrix)

this is matlab code for estimating the static linear system(system function is time variable) with Kalman Filter. this program is written by matlab 7.0. Here we want to estimate the below function: this is matlab code for estimating the static linear system(system function is time variable) with Recursive Least Squre and 2 solutions for better result. 1- using the Covariance Matrix Reseting in a specefic time. 2-using the RLS with Forget Factor this program is written by matlab 7.0. Here we want to estimate the below function: 1-u^2+(1+tansig(0.1*(t-375)))*u^3+u^5+3*u^7 finally,there are plots for showing results.

地震波数值模拟 该程序为地震波数值模拟程序，基于声波方程高阶有限差分格式，程序中参数已经进行了说明，对于初学地震波数值模拟的朋友很有帮助。该程序为matlab编制，可以直接进行成图，所得图形为波场快照。(Seismic wave numerical simulation)

光纤激光器仿真，包括端泵与侧面多点泵浦,适用于如镱离子等四能级系统,内含5个程序(simulation for fiber laser,including end pumping and multi-dot pumping)

说明：  rk-4 四阶龙格库塔法求解代码及结果图片(rk-4 Fourth order Runge Kutta method solution code and result picture)

关于viterbi编码的，与信道编码有关，很适用(viterbi_decoder3_p)

提供一种求解最优哈密尔顿的算法---三边交换调整法，要求在运行jiaohuan3（三交换法）之前，给定邻接矩阵C和节点个数N，结果路径存放于R中。(Hamilton provides an optimal algorithm for solving triangular exchange--- Adjustment Act to require running jiaohuan3 (c exchange) before the adjacency matrix C, given the number of nodes N, the results of the path stored in R,.)

beat identifications detection

此代码可以进行指纹识别，包括预处理，特征提取，分类识别(this code can fingerprint identification, including preprocessing, feature extraction, classification, etc.)

运用古典隐式方法模拟二维空间中声波的传播，求解工程用了追赶法(The dissemination of the classical implicit simulation method of acoustic wave in two-dimensional space, solving project was chasing method)