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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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B-ELM
bidirectional elm matlab code
- 2021-04-26 20:38:45下载
- 积分:1
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ASKOOKFSKBPSKQPSK8PSKofdm
ASK, OOK, FSK, BPSK, QPSK, 8PSK(ofdm)de的调制方式(ASK, OOK, FSK, BPSK, QPSK, 8PSK (ofdm) de the modulation)
- 2009-04-20 12:44:10下载
- 积分:1
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funtion
从最常用的“.BMP”图像格式中读取图像数据,
通过访问数字图像RGB三个通道的对应矩阵,改变数字图像的色彩 将数字图像的RGB表示转换为YUV表示;通过访问Y(亮度)通道,改变数字图像的亮度;通过Y(亮度)通道作灰度的线性变换,改变数字图像的对比度(failed to translate)
- 2010-12-20 21:44:24下载
- 积分:1
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456
使用蟻群演算法來求解旅行推銷員問題於matlab上(Using ant colony algorithm to solve the traveling salesman problem in matlab)
- 2010-08-12 23:33:21下载
- 积分:1
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用粒子群优化算法进行特征选择和SVM参数优化 psofeatureselection
用粒子群优化算法进行特征选择和SVM参数优化(Using Particle Swarm Optimization algorithm of feature selection and SVM parameter optimization)
- 2020-06-27 02:00:02下载
- 积分:1
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BPSK_Done
基于的BPSK的matlab,完整的程序,有能相关的说明和注释,有需要的朋友下载吧~(Based on the matlab BPSK, complete program and relevant instruction and comments, the need to download friends ~)
- 2011-11-15 13:26:12下载
- 积分:1
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enginvalue_music
上面传的算法主要是为了实现通过MUSIC算法进行DOA的估计,运行不存在问题(Pass above the algorithm is mainly in order to achieve by the MUSIC algorithm of DOA estimates, there is no problem running)
- 2012-11-22 00:16:29下载
- 积分:1
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compression
application of compression image
- 2014-02-04 22:31:06下载
- 积分:1
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CIC
CIC 积分梳状滤波器设计,一个很好用的参考资料(CIC design)
- 2011-11-14 09:46:35下载
- 积分:1