题目：有1、2、3、4个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？...

详细讲解信号处理的pdf,里面包含了FFT，小波，希尔伯特-黄变换等内容，是信号处理方面很好的参考资料(Explain in detail the signal processing pdf, which contains the FFT, wavelet, Hilbert- Huang Transform, etc., is a good reference for signal processing, data)

利用matlab软件来绘制Chessboard，可以用于摄像机张正友方法的标定(Using matlab software to draw the Chessboard, the camera can be used to calibrate the method of Zhang Zhengyou)

用傅里叶变换对地震信号进行时频分析，通过修改参数可以深刻的认识傅里叶变换在时频分析中的意义，适合地震信号研究的初学者。(Fourier transform of the seismic signal frequency analysis, parameter changes can be profound understanding of Fourier transform in the time-frequency analysis of significance for the seismic signals of beginners.)

很经典的fisher分类算法，可以用于对信号进行分类，非常好用！(Very classic fisher classification algorithm, and can be used to classify the signal, is very nice!)

simulation pv mppt buck avec Simulink

Viscous flow in a pipe

此程序用来产生相关的nakagami随机变量(基于“Generating Correlated Nakagami Fading Signals with Arbitrary Correlation and Fading Parameters)

matlab上实现的音频处理数字混响算法(matlab to achieve audio processing digital reverb algorithm)

单相有源电力滤波器仿真系统框图，电能质量的谐波补偿(APF MATLAB )

OSPA 距离计算 用于多目标检测使用的方法。 一键计算OSPA距离。使用前请仔细阅读readme 文件。严格按照步骤操作。(OSPA distance calculation. Perfect solution for OSPA calculation. Make sure you go through the read me file before using it.)