matable harris焦点检测精确到亚像素级

利用MATLAB编制的绘图程序，对利用自己开发绘图界面很有启发(using MATLAB based mapping procedures, the development of the use of their graphics interface is very enlightening)

There are 19 questions and 1 programming exercise. Some of them are very easy, some of them are really hard and challenging, and these will be marked as such. If you don’t want to be challenged too much, you can skip the hard questions

基于负熵最大的独立分量分析，最大似然（ML）准则和最大后验概率（MAP）准则，小波包分析提取振动信号中的特征频率。( Based on negative entropy largest independent component analysis, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Wavelet packet analysis to extract vibration signal characteristic frequency.)

说明：  该代码主要是在ABAQUS软件平台上给特定的薄板一定的激励信号，用来激发超声导波模态的形成(Ultrasound guided wave excitation signal)

structure of periodic crystal

说明：  学习matlab的资料，包含matlab的练习题和上机训练(Learn matlab materials, including Matlab exercises and computer training)

Simulink file to power factor correction simulation

不同信噪比下，均匀圆阵方位角估计性能；谱峰搜索寻找最大值对应坐标；100次试验求均方根误差(azimuth estimation using UCA vernus different SNRs search the spectral peak and fing the maximum 100 trails to get RMSE)

Quadrocopter model in Simulink with basic PID controller

说明：  庞加莱截面法，用于非线性动力学分析，可运行！(Applications of Poincare map in nonlinear dynamics)