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Inverse discrete cosine transform of an image

这是一个利用遗传算法来求解非线性方程组的经典案例，有助于学习好这种新的算法(A program on the understanding of nonlinear equations solved using genetic algorithms)

xwch_test.m是主测试文件；biaoji.mat存放滤波器系数；xiangweicha.m用FFT计算相位差。 仿真框架为： 1.标记信号和双音信号续接作为发送信号； 2.对双音中一个频率分量的相位做偏移，再经过一个低通滤波器（引入线性相位，模拟收发不能同步测量现象）后，作为收到的信号； 3.用一个检测信号对收发信号进行相关运算； 4.画出收发信号以及相关处理后的信号。找出相关信号的那个尖点，从而推算出收发双音信号0相位点； 5. 输入0相位点位置，计算相对相位差。(xwch_test.m is the main test file biaoji.mat store filter coefficients xiangweicha.m calculated using FFT phase difference. Simulation framework: 1. Mark signals and then as a two-tone signal continued to send signals 2. On a two-tone frequency components of the phase shift to do, and then through a low pass filter (the introduction of linear phase, simulation can not simultaneously send and receive measuring the phenomenon), the as received signal 3. using a detection signal of the transceiver signal correlation operation 4. draw send and receive signals and related processed signal. Correlated signal of the cusp, which calculate the two-tone signal transceiver 0 phase point 5. Enter 0 phase point position, calculate the relative phase difference.)

对一维线相控阵和二维平面相控阵天线用matlab仿真出来，展示相控阵的方向改变能力和多波束形成能力。(One dimensional linear phased array and two-dimensional phased array antenna with matlab simulation, show the change of direction of the phased array and multi-beam forming ability.)

matlab程序： 计算机模拟思想计算概率模型(matlab program )

最小二乘法的matlab实现,最小二乘法用于曲线拟合，本程序可以适用于一次或者二次曲线拟合( Polynomial least squares curve fitting- First and Second order curve fitting. All the given data points must be used for fitting.)

用matlab，根据要求输出特定的pattern，作为相机标定用(Using matlab, according to the specific requirements of the output pattern, as the camera calibration with)

学校关于自动化课程MATLAB的课程设计要求(The school curriculum on the automation design requirements of the course MATLAB)

三相异步电动机直接启动定子转子电流，转速以及转矩的仿真模拟，simulink仿真(Simulation and Simulation of three phase asynchronous motor directly starting stator rotor current, speed and torque, Simulink simulation)

计算信号的自相关矩阵的matlab程序，主要用于信号的实时分析。(Calculation of the signal autocorrelation matrix matlab program, mainly for real-time signal analysis.)