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Model of QPSK modulation

说明：  标准遗传算法与多种群遗传算法Matlab代码，求解函数最值，GA包含交叉变异。多种群遗传算法MPGA包含移民操作。(the standard genetic algorithm and a variety of group genetic algorithms matlab code to solve the function maximum, GA contains cross variation. multiple group genetic algorithms MPGA contain immigration operations.)

该程序是三维拓扑优化程序，对于做拓扑优化的学生来说是很有帮助的(matlab code for 3D topology optimization)

一、穆勒矩阵构成 穆勒矩阵是一个4*4的矩阵，完整描述了介质的偏振属性。可通过水平线偏振光H、垂直线偏振光V，45°线偏振光P，右旋圆偏振光R入射，并分别探测水平线偏振光H、垂直线偏振光V，45°线偏振光P，右旋圆偏振光R出射情况下的能量值，即16种偏振态组合下的强度结果，HH/ HV/ HP/ HR，PH/ PV/ PP/ PR，VH/ VV/ VP / VR和RH/ RV/ RP/ RR。进而Mueller矩阵可按照公式（1）计算得到：(First, the Muller matrix The Muller matrix is a 4*4 matrix that completely describes the polarization properties of the medium. The horizontal line, vertical line polarized light polarized light H V, 45 degrees P linearly polarized light, right circularly polarized incident detection and R, respectively, H vertical horizontal line polarized light polarized light V, 45 degrees P linearly polarized light, right circularly polarized light R emitted under the condition of energy intensity results of 16 kinds of polarization combinations HH/ HV/, HP/ HR, PH/ PV/ PP/ PR VH/, VV/ VP and RH/ RV/ RP/ RR / VR. Furthermore, the Mueller matrix can be calculated according to formula (1):)

实现多普勒信号的处理。 包括信号平滑等操作(Doppler signal processing to achieve. Including the signal smoothing operation, such as)

说明：  BP神经网络的仿真，能够拟合各种函数，支持梯度下降法和LM两种训练算法。所有代码自己编写，没有使用matlab自带的函数，是学习的最佳范本。(The simulation of BP neural network can fit various functions and supports two training algorithms, gradient descent method and LM. All the code is written by myself, without using the functions that come with matlab, it is the best model for learning.)

ISO-16609-- 银行业务.使用对称技术的消息鉴别要求(ISO-16609- banking business. Message Authentication using symmetric techniques required)

Default constructor MyString::MyString() { m_szString = NULL m_aSize = 0 cout << "Default constructor from my sting " }

用matlab做的三电平SVPWM逆变器的仿真，能够实现svpwm的基本功能，但是还不完善。(Using matlab to do a three-level SVPWM inverter simulation, svpwm to achieve the basic functions, but not perfect.)

SAR成像的算法，是一些比较基本的成像成像程序，对sar成像的入门应该比较有帮助的(SAR imaging algorithms, it is some of the more basic imaging imaging procedures, imaging sar entry should be more helpful)