timer

用burg算法实现功率谱的估计，可以改变信噪比SNR，阶次P，可以分析分辨率(Burg algorithm using power spectrum estimation, can change the signal to noise ratio SNR, order P, can be analyzed resolution)

fit_maxwell_pdf - Non Linear Least Squares fit of the maxwellian distribution. given the samples of the histogram of the samples, finds the distribution parameter that fits the histogram samples. fits data to the probability of the form: p(r) = sqrt(2/pi)*(a^(-3/2))*(r^2)*exp(-(r^2)/(2*a)) with parameter: a format: result = fit_maxwell_pdf( x,y,W,hAx ) input: y - vector, samples of the histogram to be fitted x - vector, position of the samples of the histogram (i.e. y = f(x,a)) W - matrix or scalar, a square weighting matrix of the size NxN where N = length(y), or 0 to indicate no weighting is needed. hAx - handle of an axis, on which the fitted distribution is plotted if h is given empty, a figure is created. output: result - structure with the fields a - fitted parameter VAR - variance of the estimation type- weighted LS or not weighted LS iter- number of iteration for the solution

this code is for REAL-valued signals. An implementation of JADE for both real and complex signals is also available from http://perso.telecom-paristech.fr/~cardoso/guidesepsou.html

本程序基于Matlab，可以对特定波长光线在透镜系统中进行光线追迹。可以生成任意方向平行光，点光源任意角度光线，并对全反射，光线射出系统等特殊情况用红色标出。透镜数任意，透镜参数可设。(The program is based on Matlab, with a specific wavelength of light in the lens system for ray tracing. Parallel light can be generated in any direction, at any angle point source of light, and the reflection of light injection system and other special circumstances marked in red. Any number of lenses, lens parameters can be set.)

narmamaglev 神经自校正控制系统，narma-l2控制模块，反馈线性化控制，直接自校正控制(narmamaglev neural self-tuning control system, narma-L2 control module, feedback linearization control, direct self-tuning control)

说明：  My friend give this to me. I hope it will be helpful to others.

这段代码是关于边界链码提取的,采用MATLAB编写,但是还有一些欠缺(This code is on the boundary chain code extraction, using MATLAB to prepare, but there are still some lack of)

说明：  这是一个信赖域方法的程序，简单实用，对初学者非常有用。(This is a trust region method procedures, simple, practical, very useful for beginners. )

红外热成像鱼眼镜头设计经典教程Infrared thermal imaging fisheye design classic tutorial(Infrared thermal imaging fisheye design classic tutorial Infrared thermal imaging fisheye design classic tutorial)

中心逼近式动态灰色模型源代码，可以预测滑坡等模型(Center approach dynamic gray model source code, can predict landslide model)