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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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123
卡尔曼滤波在目标跟踪中应用仿真研究,机动目标跟踪与实现源程序(Simulation study on Application of Calman filter in target tracking,And the realization of the source program for maneuvering target tracking)
- 2014-09-19 21:22:28下载
- 积分:1
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permanentMotor
PMSM的矢量控制,坐标变化,三闭环,控制效果良好,波形不错(PMSM vector control, coordinate changes, three closed loop)
- 2017-08-30 09:55:40下载
- 积分:1
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harmonic_est
adaptive filter harmonic estimation
- 2011-05-29 16:09:56下载
- 积分:1
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qicheqiziyoudu
汽车七自由度的振动程序,可以求解固有频率,悬架的动挠度等,欢迎大家下载学习与交流(vibration of the car with seven degrees)
- 2013-12-22 15:01:20下载
- 积分:1
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hys_model_for_thesis
迟滞描述的一段程序.可以借鉴建立presich模型。(Hysteresis describes a program)
- 2013-05-23 01:43:06下载
- 积分:1
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multi_object
matlab编写的多目标处理程序,里面包括IMM,JPDA等各种算法,对于学习信息融合的同学肯定有帮助(matlab prepared to deal with multi-objective process, which include IMM, JPDA, such as a variety of algorithms, information fusion for the study will certainly help the students)
- 2020-09-06 17:08:04下载
- 积分:1
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matlabandsignalprocessing
介绍了matlab和生物医学信号处理的基础知识,都是PPT,适合新手入门。(Introduced and biomedical signal processing matlab basics are PPT, suitable for beginners.)
- 2010-05-07 11:30:52下载
- 积分:1
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EC4
Computational exercise to calculate the dispersion compensation of the fiber optic
- 2015-04-15 17:23:48下载
- 积分:1
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wimax
RFSim99 is a free linear S-parameter based circuit simulator offering schematic capture, simulation, 1 port and 2 port S-parameter display and file support, tolerance analysis, stability circles, and much more.
- 2009-05-03 21:03:59下载
- 积分:1