fcht

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lena图像的3层小波的图像分解与重构(Lena image-based 3-layer wavelet decomposition and reconstruction of images)

基于模板匹配的人脸检测教程，matlab代码(tutorial of face detection by template)

基于MATLAB的无标度网络仿真，对于学习复杂网络很很好的启迪(MATLAB-based simulation of scale-free network, complex network is very good for learning inspired)

matlab image processing toolbox

Calendar Application” Using C/C++

此函数实现含噪语音的信噪比的计算，以最小帧算法为基础。(Implementation of this function of the signal to noise ratio of noisy speech has calculated that, with the smallest frame-based algorithm.)

说明：  基于kmeans，用于计算客户价值等(Based on kmeans, used to calculate customer value, etc.)

用遗传算法来改善BP神经网络模型，可以很好的用于最优化、预测等问题的求解(Using genetic algorithms to improve the BP neural network model, can be very good for optimization, forecasting and other problem solving)

简单地支持向量机的测试程序，希望对你们有用,它是测试两个线性分类的。(A simple test program to support vector machine, and I hope useful to you.)