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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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data_analysis
Data Analysis,matlab数据分析教材,英文版本,是一本比较新的资料(Data Analysis, matlab data analysis textbook English versions, is a relatively new information)
- 2013-11-03 16:11:08下载
- 积分:1
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AffinityPropagationalgorithm
包好一个AP算法matlab程序,以及最早提出AP算法的经典文章及相应PPT(Affinity Propagation algorithm matlab
Clustering by Passing Messages Between Data Points.pdf
)
- 2010-11-06 18:07:01下载
- 积分:1
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WSN-in-matlab
Wireless Sensore network in matlab
- 2014-12-25 01:30:12下载
- 积分:1
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turbo
这个程序主要是基于turbo编码的编解码实现程序。(This procedure is based mainly on the turbo-coded codec implementation procedures.)
- 2009-03-07 21:26:20下载
- 积分:1
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ca_modal
元胞自动机:森林火灾模型
规则:
(1)正在燃烧的树变成空格位;
(2)如果绿树格位的最近邻居中有一个树在燃烧,则它变成正在燃烧的树;
(3)在空格位,数以概率p生长;
(4)在最近的邻居中没有正在燃烧的树的情况下树在每一时步以概率f(闪
电)变为正在燃烧的树。( Cellular Automata: Forest Fire model Rule: (1) burning of trees into a space bit (2) If the tree can notably nearest neighbor has a tree in the burning, then it turned into being burning tree (3) in the space bit, a few with probability p growth (4) In the nearest neighbor is not burning under the tree the tree in each time step with probability f (flash electricity) Variable for the burning trees.)
- 2009-11-23 12:38:00下载
- 积分:1
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boshuxingcheng
换能器阵元的不同排列组合决定其指向性,波束形成是多波束测量的关键技术。文中
通过数学计算总结了不同换能器阵进行波束形成的工作原理,并介绍了利用二维DFT进行频
域波束形成的一般方法。最后结合现役多波束测深系统,简单解释说明不同系统所采用的波束
形成技术。(Transducer using an array of different permutations and combinations to determine its directivity, beam formation is the key technology for multi-beam measurements. Summarized by mathematical calculations the transducer array beamforming works, and describes the general method of two-dimensional DFT in the frequency domain beam formation. Finally, the active-duty multi-beam sounding system, the simple explanation of the different systems used in beamforming technology.)
- 2012-06-03 10:48:32下载
- 积分:1
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cluster
该代码主要是解决激发介质问题,用来计算每一个元胞。(The code is mainly to solve the problem excitable media, used to calculate each cell.)
- 2013-09-14 21:45:43下载
- 积分:1
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mysin
关于MATLAB的编程七阶反对称滤波器,滤除低频和直流分量信号(On MATLAB programming,the seven order anti-symmetric filter, filter out low frequency and dc component of the signal)
- 2016-09-20 11:16:53下载
- 积分:1
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small-routine
这是Matlab初学者编写的小程序,内容简单明了,比较适合刚入门的人学习(This is a small program written in Matlab beginners, the content is simple, more suitable for people just getting started learning)
- 2013-11-28 09:27:29下载
- 积分:1