matlab_pwelch_windows

说明：  2013数学建模研究生B题建立多项式模型代码(2013 graduate of mathematical modeling to establish polynomial model code B title)

二维光场分析（球面波）。编程实现单色球面波在给定二维平面上的构建，并用相位表达式直接计算其相位，与通过复光场得到的相位相比较，观察相位包裹（缠绕）现象。与平行光相干涉，观察干涉光强分布。(2 d light field analysis (spherical wave).Programming monochromatic spherical wave in a given the construction of a 2 d plane, and the phase expression directly calculate the phase, compared with the phase is obtained by complex light field, observation phase package (coil).Observe with parallel light interference, the interference light intensity distribution.)

Matlab的矩阵运算范例.补充了一些内容，对矩阵运算有帮助。(Matlab examples of matrix operations. Add some content, for matrix calculation has to help.)

mathematical solutions os some problems

a complete program for calculating and plotting effective nuclear charge

水下信号与信息处理中，为了准确估计方位，把波束分为左右两路波束，成为虚拟阵元，然后计算方位。(Underwater signal and information processing, in order to accurately estimate the orientation of the beam into two beams around and become virtual array, and then calculate the position.)

信号源的emd分解，得到imf分量，以及imf分量的时频图。(The signal source EMD decomposition, the IMF component, as well as the imf component time-frequency diagram.)

说明：  《现代信号处理》中关于利用最小二乘法估计ARMA模型的参数，并进行谐波恢复的仿真程序(err)

视频稳像的程序，matlab实现，内容很全，运动估计，运动补偿(Video image of the program, matlab, content is very full, motion estimation and motion compensation )

matlab，最小拍控制系统，输入为速度信号，输出控制器输出变量无波纹。无波纹最小拍控制系统(matlab, minimum beat control system, the input speed signal, the output controller output variables corrugated. Corrugated minimum Beat Control System)