QPSK1030

一阶导数的常用差分逼近 求解df的差分逼近 flag标记使用的差分算法 算法来自周超红的《一阶导数的差分逼近汇总》 可按照里边的算法构造更高阶的差分逼近(First derivative of the common difference approximation approach for solving differential df flag tag algorithm using the difference method from the week of super-red " first derivative of the difference approximation of summary" can be constructed in accordance with the algorithms inside the differential approximation of higher order)

扩展卡尔曼滤波在跟踪运动轨迹中的应用（matlab程序）(Extended Kalman filter (EKF) simulation demo)

Press the revolving door control interface output, a very simple program for beginners to see the program with

用于c++计算拟牛顿法的实验,请参考，多谢请多指教(For c++ calculation of the experimental quasi-Newton method, please refer to, please advise Thank you)

spread spectrum simulation

for fem matlab for solving all 2D and 3D problem

有关可变码长的LDPC编码电路的设计与实现和一些相关的英文资料以及文献(LDPC)

matlab 中梁的弯矩 剪力 变形 轴力图形 以及源程序(matlab in Beams Shear deformation and axial force graphic source)

说明：  把一个文件夹中的图片根据图片的名称分到两个文件中(Put the pictures in a folder name according to the pictures to the two files )

快速eemd算法，收敛速度与传统eemd相比有很大改进(EMD is a nonlinear and nonstationary time domain decomposition method. It is an adaptive, data-driven algorithm that decomposes a time series into multiple empirical modes, known as intrinsic mode functions (IMFs).)