I-st-Demo-Code-with-noise-added

数字锁相环，采用costas环的数字形式，实现跟踪载波相位，(Digital phase-locked loop, using the digital form costas loop to achieve carrier phase tracking,)

基于干扰观测器的PID控制算法的Matlab仿真源程序(Disturbance Observer-based PID control algorithm Matlab simulation source)

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)

MATLAB潮流计算(MATLAB flow calculation)

这是卫星通信方向图测量软件 采用了VB编程，整个源代码通用 方便使用(This is a satellite communication pattern measurement software using VB programming, the entire source code to facilitate the use of generic)

说明：  实习五求对称矩阵A全部特征值及特征向量 数值计算(A practical five-Symmetric Matrix Eigenvalue and Eigenvector of all numerical)

it s a communication document

kalman滤波的经典书记（kalman 秦永元），要求有一定数学基础(Kalman filter of the classic secretary, request has the certain mathematical foundation)

相位图像的相位解包算法对一个相位图进行解包裹(Phase image of phase unwrapping algorithm for a phase map unwrapping)

一种提取脑电信号EEG特征的时频处理方法，可以参考HHT（Hilbert-Huang Transform的资料）(EEG characteristics of a kind of EEG time-frequency approach can refer to the HHT (Hilbert-Huang Transform information))