-
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
-
PDE_matlab
求解偏微分方程的实例程序, 其他人不需帐号就可自由下载此源码 (solve PDE problom)
- 2009-10-27 16:46:24下载
- 积分:1
-
FFT
基于MATLAB平台实现利用FFT计算线性卷积(MATLAB-based platform for the realization of the linear convolution calculation using FFT)
- 2009-06-12 15:08:40下载
- 积分:1
-
Opt-1.3
基于matlab的FIR滤波器设计工具箱,及其使用说明。工具箱内具有超多优化工具:sdpt3/Sedumi等(FIR Filter Optimization Toolbox
User s Guide Version 2.0)
- 2013-08-24 20:28:09下载
- 积分:1
-
neuron
matlab平台下对人工神经网络中的LMS等算法进行的实现(the realization of artificial neural network, the LMS algorithm matlab platform)
- 2013-03-05 09:58:04下载
- 积分:1
-
multiroutes
信道是多径信道,升余弦滚降 ,取样时间无偏差的信道特性,与波形功率谱,与误码率仿真(Channel is multipath channel or Cosine, sampling time without deviation channel characteristics, and power spectral waveform, with BER simulation)
- 2006-05-19 13:37:09下载
- 积分:1
-
SpectralGraphTheoryMatlaCode
谱图理论在图像分解中的Matlab源代码,包括各功能子函数,源文件中附有使用说明(Spectral Graph Theory in Image Decomposition Matlab source code, including the function of Functions, the source file for use with)
- 2010-05-07 23:06:11下载
- 积分:1
-
Udec2bin
本程序为我自己编写的,能够实现用枚举法背包问题(This program written for my own, to achieve knapsack problem with the enumeration method)
- 2011-11-30 18:55:40下载
- 积分:1
-
MCC_test
Test MCC very powerfull!
- 2012-09-15 23:00:14下载
- 积分:1
-
DSLVQ
说明: matlab编写的[数据挖掘]分类算法DSLVQ算法程序。(Matlab prepared by the [data mining] classification algorithm DSLVQ algorithm.)
- 2005-12-29 14:46:28下载
- 积分:1