svpwm3

说明：  128QAM调制仿真的星座图。matlab源文件。(Simulation 128QAM modulation constellation diagram. matlab source file.)

Visual Studio C/C++平台下开发Turbo编码调制源程序

利用matlab对无线通信信道仿真，大尺度衰落问题(Using matlab wireless communication channel simulation, large-scale fading problem)

MATLAB 数学手册复合版内容详尽 包括矩阵及其基本运算，特征值与二次型数值计算与数据分析 插值、拟合与查表 常微分方程数值解偏微分方程的数值解 符号运算积分变换Taylor级数 概率统计 随机数的产生 随机变量的概率密度计算 随机变量的累积概率值(分布函数值)正整数的频率表 4.6.2 经验累积分布函数图形 最小二乘拟合直线 绘制正态分布概率图形 绘制威布尔(Weibull)概率图形 样本数据的盒图 给当前图形加一条参考线 在当前图形中加入一条多项式曲线 样本的概率图 附加有正态密度曲线的直方图在指定的界线之间画正态密度曲 假设检验 方差分析 foptions函数 非线性规划问题 隶属函数 模糊推理结构FIS 绘图与图形处理 含有基本实例代码 (MATLAB math composite version of the manual includes a detailed matrix and the basic computing, quadratic eigenvalue with numerical analysis and data interpolation, fitting with the look-up table the numerical solution of ordinary differential equations numerical solution of partial differential equations symbols computing integral transforms Taylor class the number of probability and statistics of the generated random number of random variables the probability density of random variable cumulative probability values (distribution function value) positive integer frequency table 4.6.2 graphical experience distribution function least-squares fitting a straight line Normal probability graph drawing Drawing Weibull (Weibull) probability graph Sample data box diagram To add a reference to the current graphics line In the current graph by adding a polynomial curve Additional samples have the probability map is the histogram density of states curve at the specified)

基于MATLAB的图像处理软件,可作为数字图像处理教学演示软件(MATLAB-based image processing software can be used as digital image processing Demo Software)

说明：  time delay estimator

由于卫星与用户接收机二者的连线方向上存在相对运动，因此引起了载波和伪码的多普勒效应，再加上接收机晶体震荡频率漂移和卫星时钟频漂等原因。接收机实际接收到的卫星载波中心频率一般不再等于信号被发射时的标称频率，这就需要接收机在载波频率一维对信号进行搜索。同时，由于卫星到接收机的距离时刻变化，加上接收机始终相对于GPS时间的偏差又并不固定，因而接收信号的伪码相位值也在改变，所以接收机也要在码相位一维对信号进行搜索。扩频信号的捕获是一个对目标信号频率域和相位域进行的二维搜索过程。(Because of the relative motion between the two of the satellite and the user receiver, the Doppler effect of the carrier and pseudo-code is caused, and the frequency drift of the oscillation of the receiver crystal and the frequency drift of the satellite clock are added. The frequency of the satellite carrier center that the receiver actually receives is generally no longer equal to the nominal frequency of the signal being transmitted, which requires the receiver to search the signal in one dimension of the carrier frequency. At the same time, because the distance between the satellite to the receiver is changed, the deviation of the receiver always relative to the GPS time is not fixed, so the pseudo code phase value of the received signal is also changing, so the receiver also searches for the signal in the code phase. The acquisition of spread spectrum signal is a two-dimensional search process for the frequency domain and phase domain of the target signal)

用于MATLAB作图中，多张图的合并（里面的文件路径需要根据需要更改）(For the MATLAB plot, the multiple number of pictures merger (inside the file path needs to be changed as needed))

对应汪荣贵基于暗原色先验模型的Retinex算法程序，程序是我自己通过学习他的论文根据论文编写的，大家可以看看。(WANG Rong-gui dark colors correspond to a priori model based on Retinex algorithm, the program is my own by studying his thesis based on papers prepared, we can see.)

使用matlab语言，实现列主元消去法解线性方程组，这是一个较好的程序(It is a good procedure that using matlab language to solve the math problem.It make the problem to be easy.)