matlabplot

matlab 非平稳信号分析，功能强大，但本人不太会用(matlab 脟脝 陆 脦脠脨脜 潞 脜 脰脦枚 拢 卢 鹿 | 脛脺脟 驴 )

说明：  基于蚂蚁算法的一维函数优化，收敛效果比较好。(ant algorithm based on the one-dimensional function optimization, convergence results were quite good.)

FDTD 2D with PML based on Sullivan 2D + PML and Lazzi 2D code Carlos J. Cela, March 2012

Modelo de dos rayos de Andrea Goldsmith (figura 2.5, según expresión 2.12) f = 0.9 frecuencia en GHz landa = 0.3/f en m R = -1 coeficiente de reflexión en tierra ht = 10 altura del transmisor en m hr = 2 altura del receptor en m Gt = 1 Gr = 1 Pt = 1 d=10:.1:100000 phase_diff = 4*pi*ht*hr./(landa*d) aproximación Pr = Pt*((landa/(4*pi))^2)*((abs((sqrt(Gt)./d) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff)))./d)).^2) Pr = Pt*((landa/(4*pi))^2)*(1./d).*((abs((sqrt(Gt)) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff))))).^2) figure(1), clf, plot((d),10*log10(Pr/max(abs(Pr)))) grid xlabel( log_1_0(d) ) ylabel( Potencia recibida (dBm) )

说明：  基于MATLAB的通信系统建模教程，包括simulink和源程序(communication system models based on MATLAB，simulink，and source programs)

PLL SIMPLE FOR MATLAB

本帖调用自编函数（grating）绘制光栅条纹图像，通过例子讲解水平、竖直、环状和辐射状光栅条纹图像的绘制，用黑白和彩色显示效果给大家视觉上的震撼。调用自编函数时，可以通过成对出现的参数控制条纹的方向、颜色、周期、相位角等。(This post calls self-function (grating) draw grating image, by way of example to explain the horizontal, vertical, circular and radial grating image rendering, with monochrome and color display give you visual shock. Self function call, the parameters can be controlled by pairs stripe orientation, color, period, phase angle.)

利用该代码可进行非线性光学材料的闭孔Z扫描曲线拟合，给出材料的三阶非线性光学极化率(theoretical to closed aperture Z scan)

SAR Imaging, Wavelet Processing , using LFM signal without Fast Fourier Transform

插值计算 底质遥感反射率 水面之下遥感反射率(interp1 bottom reflectance underwater irradaince reflectance)