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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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severial-esprit-analysis
几种esprit算法分析和研究的matlab源码(Several esprit algorithm matlab source code analysis and research)
- 2011-05-06 09:35:13下载
- 积分:1
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kernel-0.0.1
一个外国人写的matlab代码,实现功能:用泊松方程实现二维彩色图像的无缝拼接。(Matlab code written by a foreigner functions: image blending using the Poisson equation.)
- 2013-03-30 14:31:28下载
- 积分:1
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ENCODE
对比LDPC Hamming 循环卷积码三种编码方式的误码率(Contrast BER LDPC Hamming codes are three circular convolution encoding)
- 2013-12-04 11:50:13下载
- 积分:1
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MATLAB
这是关于MATLAB用于飞机图像识别所提取的特征向量,很有用处,希望对大家有用(This is about MATLAB for aircraft image recognition extracted the eigenvector, very useful, hope for everyone useful)
- 2017-03-30 21:27:06下载
- 积分:1
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QPSK
基于MATLAB的QPSK的信号调制,应用于课程设计(MATLAB-based QPSK signal modulation, used in curriculum design)
- 2010-06-22 16:25:30下载
- 积分:1
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EMC_Information
st出的关于电磁兼容EMC信息的手册,比较有用,推荐给大家(st on the EMC information manuals, more useful and recommend it to everyone )
- 2006-12-17 19:50:22下载
- 积分:1
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triangle_sin_compare01_deadband
单相逆变器matlab仿真模型,开环双极性spwm控制,带死区。(Single-phase inverter matlab simulation model, open-loop bipolar SPWM control, with dead-time band control.)
- 2018-12-21 14:42:36下载
- 积分:1
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LLF
ML estimation of frequency synchronization
- 2009-10-28 19:09:12下载
- 积分:1
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simple-Fourier-transformation
说明: 使用MATLAB对周期性脉冲波进行了简单的傅里叶变换(Simple Fourier Transform on periodic pulse wave by using MATLAB)
- 2011-03-31 09:39:17下载
- 积分:1