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Rician
设计了信息在空间传输的莱斯信号模型,当接收端存在一个主要的静态信号时,如LOS分量(如在郊区和农村等开阔区域中)等,此时接收端接收的信号的包络就服从Rician分布。(Rician signal model)
- 2014-08-11 10:28:17下载
- 积分:1
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bluetooth
This file is implementing a bluetooth system which is equipped with frequency hopping method, this method is used for system
protection against jamming, This is a matlab simulink file.
- 2013-11-20 06:04:21下载
- 积分:1
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多载荷多工况的结构拓扑优化代码
说明: 多载荷多工况的结构拓扑优化代码,matlab实现(Structural Topology Optimization Code for Multi-load and Multi-working Conditions)
- 2018-12-28 10:08:57下载
- 积分:1
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qpskfigure
说明: qpsk在不同噪声环境下的星座图程序和产生的qpsk与其他信号的比较(qpsk different noise environment in the constellation process and the resulting qpsk comparison with other signals)
- 2010-04-29 10:46:59下载
- 积分:1
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shengyuxian.rar
这是升余弦滚降系统,包括时域波形,付氏变换,功率普分析,以及眼图,很有用的(Raised Cosine system, including time-domain waveform, Fourier transform, power & P analysis, and eye diagram, a very useful)
- 2006-05-17 13:33:29下载
- 积分:1
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Gap_2D_Cal
基于傅里叶变换的matlab下的二维周期性光子晶体带隙的计算绘图程序,属于冷门资料,网上很少见。(Based on Fourier transform matlab under the two-dimensional periodic photonic bandgap calculation drawing program, belonging to popular information, online rare.)
- 2013-09-23 10:36:11下载
- 积分:1
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MATLAB
说明: 有关图像去噪和调节对比度……………………………………………………(about graghic processin .basic ………………………………………………)
- 2010-04-27 20:59:21下载
- 积分:1
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PSO
This program implements a clean version of Particle Swarm Optimization
- 2012-12-31 20:43:11下载
- 积分:1
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3d-pointcloud-view
基于MATLAB的三维彩色点云的显示,真彩色,支持.ply格式,内附.ply格式的点云,(MATLAB 3D Point Cloud Processing)
- 2016-12-11 20:06:53下载
- 积分:1
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li9_23
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)...
*()
- 2010-10-17 21:53:14下载
- 积分:1