Chapter2

很有用的时频分析工具，内附各个函数的说明，方便调用。(Very useful tool for time-frequency analysis, containing a description of each function, easy call.)

zzzzz_qftdemos matlab/simulink

说明：  Matlab是一种简洁而容易入手的编程工具，对于学电子的同学在学习《数字信号处理》（清华大学版）的过程中可随课本的学习，联系matlab 一些基本的程序。(Matlab is a simple and easy to start programming tools for students learning electronic learning &quot Digital Signal Processing&quot (Tsinghua University, version) in the process of learning can be as textbooks, contact matlab some of the basic procedures.)

说明：  SVM进行两分类算法的MATlab实现代码SVM进行两分类算法的MATlab实现代码(A two-SVM classification algorithm MATlab implementation code for the two classification algorithm SVM implementation code MATlab)

Code of PSO-Rastrigin with matlab

本书以MATLAB 7为版本，由浅入深地介绍MATLAB的工作环境、基本语法、数值运算、符号运算、二维和三维图像创建与编辑、高级图形图像处理、句柄图形、图形用户操作接口（GUI）、程序设计与调试、M文件的使用、MATLAB编译器、Simulink交互式仿真集成环境的应用，以及MATLAB的外围功能和应用程序接口等内容；并通过MATLAB在高等数学、信号处理及数字通信、数字图像处理方面的应用，介绍MATLAB在实际中的应用。(Book MATLAB 7 to version, it gradually introduces the MATLAB environment, basic grammar, numerical computation, symbolic computation, two-dimensional and three-dimensional image creation and editing, advanced graphics, image processing, handle graphics, graphical user interfaces operate (GUI ), program design and debugging, M file usage, MATLAB Compiler, Simulink simulation integrated environment for interactive applications, and MATLAB peripheral functions and application programming interfaces, etc. and through MATLAB in advanced mathematics, signal processing, and digital communications, digital image processing applications, the introduction of MATLAB in practical application.)

实现分选PRI抖动雷达脉冲的功能，包含一个主函数main1和三个子函数jicha,tjbox,sousuo(achieving PRI jitter radar pulse deinterleaving,including one main function main1 and three sub functions named jicha,tjbox and sousuo)

去斜率（strech）参考信号与回波信号混频后得到中频输出信号S(t)=Aexp(j*2*pi*f0*t+phase) 其中f0与回波延时的关系为： f0=k*delay_t K为线性调频斜率，delay_t为回波延时 将s(t)采样，FFT变换即可得到目标距离与频谱的关系。 Strech 信号测距 输入混频后的中频信号（图一），经采样及FFT变换得到频谱（图二） 再根据频谱与距离的关系式R=Tcf/2B显示出距离(图三) (Go slope (strech) obtained after the reference signal and the echo signal mixer IF output signal S (t) = Aexp (j* 2* pi* f0* t+phase) f0 and echo delay relationship: f0 = k* delay_t K chirp slope, delay_t the echo delay sampling s (t), the FFT transform to the target distance spectrum of relations. Strech signal ranging input mixer IF signal (Figure 1), sampling and FFT transform spectrum (Figure 2) according the the spectrum distance relationship R = Tcf/2B shows the distance (Figure 3))

G729编码和解码的Matlab源程序,本人已经亲测，绝对能用，欢迎下载。(G729 coding and decoding of Matlab source, I have kissed, absolute can, welcome to download.)

MinkowskiMethod算法 ,有较好的参考价值，小波包分析提取振动信号中的特征频率。( MinkowskiMethod algorithm, There are good reference value, Wavelet packet analysis to extract vibration signal characteristic frequency.)