exp2_FFT_DIT

核主成分分析中使用多项式核函数时的MATLAB代码，有注释，易看懂。(Kernel Principal Component Analysis in the use of polynomial kernel function of the MATLAB code, annotated, easy read.)

关于kalman滤波的一个比较有代表性的例子，程序中把没有加高斯噪声和加过高斯噪声后进行滤波后的图形用不同颜色的曲线画在了一个图上，便于比较和理解(Kalman filter on a more representative example of the program to add Gaussian noise and processing not been filtered Gaussian noise after the graphic curves of different colors painted on a map, to facilitate comparison and understanding)

抑制载波单边带simulink程序，进行频谱计算研究，分析信号特征。(Sideband suppressed carrier simulink program, Calculation of spectral analysis of the signal characteristics.)

说明：  偏最小二乘算法在MATLAB中的实现，直接将文件拷贝至matlab文件夹下，即可使用。详细使用方法见代码本身(Partial least-squares algorithm in MATLAB in the realization of a file copy directly to the matlab folder, you can use. See detailed use of the code itself)

matlab程序化回测平台 可以用于策略回测(matlab tradingstrat for backtest)

滚动轴承故障诊断的FFT分析，用故障诊断软件采集的一组数据进行分析(FFT analysis of the rolling bearing fault diagnosis, a set of data collected with the fault diagnosis software to analyze)

Introduction to ZigBee standard and research papers for the same is attached.

基于matlab的有限差分法程序，计算无限长金属槽的槽内电压(Based on the finite difference method matlab program to calculate the tank voltage infinitely long metal trough)

说明：  运用各种机器学习算法，检测人脸是否为照片(Various machine learning algorithms are used to detect whether a face is a photo)

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) )