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LinearBPM
这是一个简单的FFT为无电位1 +1 +1 Ð 薛定谔方程的光束传播方法。如果该软件灵活,允许引入的术语(如果是极少数需要包括色散效应高阶导数)。例如,如果一个人渴望解决的一个方程的形式:
(四/ dz的+ Ð ^ 2/dx ^ 2 - 0.25 * Ð ^ 3/dx ^ 3)== 0 Ÿ
它可以解决使用以下代码:
Ž = linspace(0,1,512)
x = linspace(-5,5,1024)
psi0 =进出口(- x的。^ 2)
Ð = D_lateral1D(十,2)-0.25 * D_lateral1D(十,3)
字段= LinearBPM(psi0,有D,Z)
凡D_lateral1D是一个函数,提供“取代”的微分算子。
这个函数是在一个非线性的BPM,我曾对(分步,谱方法等),将提交给我,当我完成他们的文件和组织功能更复杂的设置非常初期阶段。
(This is a simple FFT based beam propagation method for potential-free 1+1+1D Schrodinger equation. The software if flexible and allows to introduce high-order derivatives in the term (very handful if is needed to include dispersion effects). For example, if one desires to solve an equation in the form:
(d/dz+ d^2/dx^2- 0.25*d^3/dx^3)Y == 0
It can be solved using the following code:
z=linspace(0,1,512)
x=linspace(-5,5,1024)
psi0=exp(-x.^2)
D=D_lateral1D(x,2)-0.25*D_lateral1D(x,3)
field=LinearBPM(psi0,D,z)
Where D_lateral1D is a provided function that "replaces" the derivative operator.
This function is a very early stage in a more complex set of non-linear BPM functions that I have made (split-step, spectral methods, etc.) and I will submit them when I finish their documentation and organization.
Sorry for my English, I m eager for your comments.
)
- 2010-07-05 12:02:42下载
- 积分:1
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chapter03
说明: 无线通信中的天线仿真,matlab平台上提供源码,第二部分(Wireless communication antenna simulation, matlab source platform, Part II)
- 2008-11-26 18:01:46下载
- 积分:1
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MatlabPfunction
matlab中包括各种函数、命令含义、还有simulink模块的(matlab include a variety of functions, commands, meaning simulink module)
- 2012-03-31 10:26:28下载
- 积分:1
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histcn
compute n-dimensional histogram
- 2012-06-29 23:11:21下载
- 积分:1
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LinearNewmark
线性加速度法计算单自由度体系地震时程反应(Single degree of freedom linear acceleration method Seismic Response System)
- 2010-07-10 23:43:28下载
- 积分:1
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chap8
P0801:索书号文字图像分割
P0802:粘连字符切分
P0803:文字识别
P0804:彩色车牌分割
P0805:商标文字分割
Recognition:文字识别的识别子函数
StrDetect01:文字识别的结构特征提取子函数(P0801: Call Number text image segmentation P0802: adhesion character segmentation P0803: Character Recognition P0804: color plates partition P0805: text segmentation trademarks Recognition: Character Recognition Recognition Functions StrDetect01: the structure of character recognition feature extraction Functions)
- 2008-05-21 22:25:09下载
- 积分:1
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Filter-for-Removal-of-Impulse-Noise-by-Using-Fuzz
filter for removal of impulse noise using fuzzy filter
- 2011-01-28 17:49:28下载
- 积分:1
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EchoCanceller
my Acoustic Echo Cancellation (AEC) in matlab
- 2011-10-20 05:34:42下载
- 积分:1
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DIR2CAS
Matlab filter conversion
- 2011-12-14 10:52:37下载
- 积分:1
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channelsimulation
此程序为在matlab仿真软件中进行仿真的程序,对无线信道进行了仿真,考虑了雨衰、荫影等影响。(my english is very very poor.)
- 2011-12-14 21:21:41下载
- 积分:1