-
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
-
fsk
fsk 调制解调，有两种解调方法：相干解调和非相干解调(fsk modem, there are two demodulation methods: Coherent demodulation and noncoherent demodulation)
- 2008-04-01 10:22:43下载
- 积分：1
-
PSNR
求解两幅压缩前后图片A和B之间的峰值信噪比(To find the PSNR (peak signal-to-noise ratio) between two intensity images A and B, each having values in the interval[0,1]. The answer is in decibels (dB).)
- 2010-05-06 15:46:30下载
- 积分：1
-
pca
pca数据降维程序，包括取均值、计算协方差矩阵等详细步骤。(the pca Data dimensionality reduction procedures, including averaging, calculated covariance matrix detailed steps.)
- 2013-05-05 20:36:22下载
- 积分：1
-
puimun
模式识别中的bayes判别分析算法，有PMUSIC 校正前和校正后的比较，实现了图像的加水印，去噪，加噪声等功能。( Pattern Recognition bayes discriminant analysis algorithm, A relatively before correction and after correction PMUSIC, Realize image watermarking, de-noising, plus noise and other functions.)
- 2016-09-09 16:36:00下载
- 积分：1
-
Two Novel Ways for LVRT of DFIG
Two Novel Ways for Low Voltage Ride-through of DFIG
- 2018-07-14 00:05:49下载
- 积分：1
-
erweiwentai
用于计算二维稳态热传导方程的隐式算法程序(Two-dimensional steady-state heat conduction equation implicit algorithm procedures)
- 2021-04-08 18:59:01下载
- 积分：1
-
antennaselectionforMIMOflat_fading
天线选择的相关程序，初学者的好帮手！很有用的哦！(Antenna selection procedures, beginners a good helper!)
- 2014-09-21 03:24:49下载
- 积分：1
-
outlinetext-81806
this source code is test text draw sample.
thank you
- 2014-12-15 10:47:50下载
- 积分：1
-
SAR_simulation
SAR雷达成像仿真 基于MATLAB的三种不同的算法程序 分析频谱与分辨率(SAR radar imaging simulation based on MATLAB for three different algorithms of spectrum and resolution procedures)
- 2010-09-17 10:05:22下载
- 积分：1
