-
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
-
matlab6.5
十分有用的matlab参考书 主要关于图像处理方面的
- 2009-11-20 14:04:00下载
- 积分:1
-
zimutongji
运行文件后任意输入字母,可以统计大小写字母的个数(After the input file to run arbitrary letters, upper and lower case letters can be the number of statistics)
- 2008-06-06 17:54:49下载
- 积分:1
-
PRI_transformation
pri变换分选算法仿真实现,改进经典PRI变换算法(PRI transformation algorithm)
- 2021-01-18 22:38:44下载
- 积分:1
-
dekinpo
Digital filter simulation in Matlab.
- 2009-11-28 05:34:09下载
- 积分:1
-
askpskfsk
说明: 数字信号调制中的ASK,PSK,FSK的matlab仿真程序,包含了调制与解调过程(Digital signal modulation of ASK, PSK, FSK the matlab simulation program, including the modulation and demodulation process)
- 2009-08-12 11:13:22下载
- 积分:1
-
GPC_demo1
由于自校正控制器在实际中的广泛运用,其缺点日益明显,主要体现在变阶次、变时延和变参数的系统中,因此研制具有较强的鲁棒性的控制器在实际运用中非常有用。Clark等人提出的广义预测控制自校正控制器是一种基于参数模型的预测控制算法,它采用了时段优化性能指标,结合辨识和自校正机制,从而克服自校正控制中存在的缺点,具有较强的鲁棒性。(self-tuning controller in practice the widespread use of its increasingly obvious shortcomings, mainly reflected in the change of Order, Variable Delay and change parameters in the system, developed with the robustness of the controller in actual application is very useful. Clark and others put the GPC self-tuning controller is based on the parameters of a model predictive control algorithm, it uses time optimize performance indicators, combining literacy and self-correction mechanism, in order to overcome self-tuning control of the shortcomings, with strong robust.)
- 2006-07-18 13:35:28下载
- 积分:1
-
source
this code is for prison problem
- 2013-03-29 03:38:27下载
- 积分:1
-
interaction
平行四边形异常体的重力异常阻尼最小二乘反演(Parallelogram anomaly gravity anomaly damped least squares inversion)
- 2017-01-04 17:09:03下载
- 积分:1
-
MyIFFT
说明: 自己编制的傅立叶反变换MATLAB程序,有详细的注释,方便大家理解傅立叶反变换的意义。(Prepared by the Fourier inverse transform their own MATLAB programs, with detailed notes, to facilitate us to understand the significance of the Fourier inverse transform.)
- 2010-03-22 22:00:51下载
- 积分:1