-
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
-
ISIT-2004-long-MikMarcRox
Construction of Good LDPC Codes using Dilation Matrices
- 2010-07-15 03:22:10下载
- 积分:1
-
LFM_signal_simulation
包含例程用于雷达测距方法,理论分析清晰,请仔细阅读(contains routines for radar location, a clear theoretical analysis, please read carefully)
- 2007-01-23 20:42:03下载
- 积分:1
-
GA-RBF
自适应遗传算法优化RBF神经网络,粒子群算法优化RBF神经网络仿真结果比较。程序可直接运行(Adaptive genetic algorithm to optimize the RBF neural networks, particle swarm optimization on RBF neural network simulation results compared. Program can be run directly)
- 2012-05-17 10:23:04下载
- 积分:1
-
matlab
常用matlab的程序,对于初学者是非常有意义的。(The most commonly used MATLAB program for beginners is very meaningful.)
- 2013-04-26 22:18:42下载
- 积分:1
-
SVPWM
已经调试好的SVPWM模型,搭建了逆变电路,效果还不错(SVPWM model has been debugged, set up the inverter circuit, the results were good)
- 2015-03-19 11:40:30下载
- 积分:1
-
Improving-Dictionary-Learning
PDF+论文算法实现源代码"Improving Dictionary Learning: Multiple Dictionary Updates and Coefficient Reuse"由莱斯利N.史密斯和迈克尔·埃拉德,IEEE信号处理快报(2013年)(PDF+ thesis algorithm source code " Improving Dictionary Learning: Multiple Dictionary Updates and Coefficient Reuse" by the Er Ai Leslie N. Smith and Mike Ladd, IEEE Signal Processing Letters (2013))
- 2014-01-12 23:27:57下载
- 积分:1
-
可以编译的有限元法求解偏微分源程序
AHP层次分析法计算判断矩阵的最大特征值,用于时频分析算法,是本科毕设的题目,是机器学习的例程,毕业设计有用,二维声子晶体FDTD方法计算禁带宽度的例子。
- 2022-02-05 21:32:44下载
- 积分:1
-
complex
This disk contains numerical methods software coded in MATLAB. The algorithms are described in the text NUMERICAL METHODS for Mathematics, Science, and Engineering.FORTRAN
- 2010-11-03 02:07:00下载
- 积分:1
-
matlab-random
一个100*100的正方形,用半径为10的圆覆盖,随机在100*100的平面内放置圆心,问至少需要多少个圆,才能使得成功覆盖整个区域的概率在95 以上?并给出一个均匀随机放置装置的分布图。(A 100* 100 square, a circle with a radius of 10 covers, 100* 100 randomly placed on the center plane, and asked how many circles at least, to cover the entire area so the probability of success of 95 or more? And gives a uniform distribution of randomly placed devices.)
- 2011-04-29 11:29:45下载
- 积分:1