QPSK

利用patchwork方法，嵌入0-1水印。可设置像素修改值、选择各种经典的攻击方式和控制攻击强弱。返回提取的水印信息和峰值信噪比。利用Matlab编写。(The use of patchwork approach, embedding the watermark 0-1. Modify pixel values can be set to choose a variety of classic attacks and control the strength of the attack. Back to extract the watermark information and peak signal to noise ratio. Prepared using Matlab.)

说明：  三相整流和单项逆变，该模型能够完成三相交流对单相交流的转换(3 AC-DC-1 AC)

Optimization of Permanent Magnet Synchronous Motor Vector Control System Based on Particle Swarm Optimization

电磁场仿真软件CST，并行计算设置方法。(Electromagnetic simulation software CST, parallel computing setting method.)

单相桥式逆变电路，可稳定运行仿真，推荐下载(Single phase bridge inverter circuit, stable operation simulation)

运用simulink仿真三相异步电机，可根据自身需求调节参数(Using Simulink to simulate three phase asynchronous motor, and Parameters can be adjusted according to their own needs)

Introduce how to use matlab to solve many variety problems.

说明：  这是书上的代码，C/C++中调用Matlab C Math Library的实现，供大家参考(This is the code book, C/C++ In Matlab C Math Library calls to achieve for your reference)

to obtain the scattering width of the TM wave

信号处理,进行信号检测与处理，通过设定threshold来进行信号检测的可信度调整(Credibility adjustment signal processing, signal detection and processing, by setting threshold for signal detection)