a-3-scroll-chaos-synchronzation

Matlab GOLD序列的产生 适合学生课程使用 产生31位的GOLD序列(generation of the gold sequence(31 bits) for the convinience of the undergraduate curriculum design)

模式识别工具箱，含有多类模式识别函数,是学习和写论文的好工具。(patern recognition toolbox， which contains vairous patern recognition functions)

本文有关于OFDM循环谱的推导 可贵的是还有带循环前缀的循环谱推导 仿真了OFDM循环谱，介绍了相关理论估计盲信号参数以及改进算法(The OFDM cyclic spectrum and bilnd signal estimating)

目前常用的张正友的摄像机标定方法，对畸变系数增加了切向畸变，结果精度很高，可直接应用于程序中。(Zhang is currently commonly used in the Friends of the camera calibration method, the distortion coefficient increased tangential distortion, resulting in high accuracy can be directly applied to program.)

PHOTOVOLTAIC MODELISATION WITH SIMULINK

一个matlab写的FDTD程序 是一维的 从其他地方转载过来的 ( it s a FDTD program, which was done by matlab script)

适合卫星通信本科学生借鉴。主要为卫星转发器仿真设计。可以实现上下变频，非线性放大器实现和卫星转发器实现。(Satellite transponder Simulation Design。Achieve Frequency conversion)

clear all I=imread( lena.bmp ) figure imshow(I) I2=imrotate(I,-4, bilinear ) 逆时针旋转4度 figure imshow(I2) I3=fliplr(I) 垂直镜像 figure imshow(I3) I4=imresize(I,0.5, bilinear ) 缩小为原图的1/2 figure imshow(I4) A=double(I) 转换为double类型 计算7个不变矩 [nc,nr]=size(A) [x,y]=meshgrid(1:nr,1:nc) 得到网格 x=x(:) y=y(:) A=A(:) m.m00=sum(A) if m.m00==0 m.m00=eps end m.m10=sum(x.*A) m.m01=sum(y.*A) 计算均值 xmean=m.m10/m.m00 ymean=m.m01/m.m00 计算中心矩(li9_23.rar cm.cm00=m.m00 cm.cm02=(sum((y-ymean).^2.*A))/(m.m00^2) cm.cm03=(sum((y-ymean).^3.*A))/(m.m00^2.5) cm.cm11=(sum((x-xmean).*(y-ymean).*A))/(m.m00^2) cm.cm12=(sum((x-xmean).*(y-ymean).^2.*A))/(m.m00^2.5) cm.cm20=(sum((x-xmean).^2.*A))/(m.m00^2) cm.cm21=(sum((x-xmean).^2.*(y-ymean).*A))/(m.m00^2.5) cm.cm30=(sum((x-xmean).^3.*A))/(m.m00^2.5) im(1)=cm.cm20+cm.cm02 im(2)=(cm.cm20-cm.cm02)^2+4*cm.cm11^2 im(3)=(cm.cm30-3*cm.cm12)^2+(3*cm.cm21-cm.cm03)^2 im(4)=(cm.cm30+cm.cm12)^2+(cm.cm21+cm.cm03)^2 im(5)=(cm.cm30-3*cm.cm12)*(cm.cm30+cm.cm12)... *((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)... +(3*cm.cm21-cm.cm03)*(cm.cm21+cm.cm03)... +(3*(cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2) im(6)=(cm.cm20-cm.cm02)*((cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2)... +4*cm.cm11*(cm.cm30+cm.cm12)*(cm.cm21+cm.cm03) im(7)=(3*cm.cm21-cm.cm03)*(cm.cm30+cm.cm12)... *((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)... +(3*cm.cm12-cm.cm30)*(cm.cm21+cm.cm03)... *()

matlab中用矩阵迭代法求解问题的C程序(matrix iteration method)

matlab常用代码,包括常用的图像图形处理。详细请下载查阅。(commonly matlab code, including commonly used in image and graphics processing. For details, please download the inspection.)