Mathematical-modeling

七单元天线阵MUSIC DOA估计： d=1 ， 天线阵元的间距； lma=2， 信号中心波长； 四输入信号； A=[A1,A2,A3,A4]， 得出A矩； 四信号的频率d=[1.3*cos(v1*n) 1*sin(v2*n) 1*sin(v3*n) 1*sin(v4*n)] 构造输入信号矢量 U=A*d 总的输入信号 总输入信号的协方差矩阵 [s,h]=eig(c) 求协方差的特征矢量及特征值 取出与零特征值对应的特征矢量 求协方差矩阵的逆矩阵 应用Music法估计输出 绘出各波达方向图(Seven-element antenna array MUSIC DOA estimates: d = 1, Antenna Array pitch LMA = 2 signal center wavelength four input signals A = [A1, A2, A3, and A4], drawn A moment tetra-frequency of the signal D = [1.3* cos (V1* n) 1* ⁢ sin (v2* n) 1* sin (v3* n) 1* sin (V4* n)] constructed input signal vector U = A* D of the total input signal of the total input signal covariance matrix [S] = EIG (c) seeking covariance feature vector and the feature value removing and corresponding to the zero eigenvalues ​ ​ characterized vector seeking covariance matrix inverse matrix Applications Music estimate output plotted DOA Figure)

This piece of code can be used to import text file data of the signature samples, and pre-process them.

基于匹配滤波器的线性调频雷达回波产生及压缩(LFM matched filter-based radar echo generation and compression)

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这个压缩包括了通信系统的仿真建模原理，以及信道的模型，对初学者和有帮助！(This compression includes the principles of communication systems, simulation modeling, and channel models, for beginners and helpful!)

Making Curve in Matlab

一个简单的计算电磁波多普勒频率的matlab函数，自己用的，随手编写了。(A simple matlab function for compute doppler frequency，very simple.)

本书的目的是让读者熟练掌握MATLAB的知识并用来求解工程问题。解决这类问题一般需要编写相对较短、使用次数较少的程序。因此，本书将着重介绍在MATLAB中如何有效地开发简洁易读的程序，同时使之具有易于调试和执行速度快的特点。(The purpose of this book is to allow readers to master knowledge of MATLAB and used to solve engineering problems. To solve such problems usually need to write a relatively short period, the use of fewer procedures. Therefore, this book will focus on how to effectively develop in MATLAB concise, easy-to-read program, so that it has easy debugging and execution speed.)

说明：  假定导引头工作在理想状态，能够无延迟无误差地输出与视线角速度成比例的信号u，在此情况下的导引律(Assuming that the seeker works in an ideal state, it can output the signal U proportional to the angular velocity of the line of sight without delay and error. In this case, the guidance law)

使用matlab语言编程解决整数规划问题(Using matlab language programming to solve the integer programming problem )