pca

qpsk调制解调实验，详细介绍了调制解调的原理，深入理解理论知识(qpsk modulation and demodulation experiment, described in detail the principles of modulation and demodulation, in-depth understanding of the theoretical knowledge)

说明：  自相关法求取时间序列延时的函数，包括Simulink产生时间序列的文件，两个主函数，以及运行程序(Since the correlation function to obtain time series of delay, including time series generated Simulink file, the two main functions, and operational procedures)

都是MATLAB的课件,都值得仔细看看,要采用啊,不要浪费资源(are MATLAB courseware are worthy of a closer look at, to use ah and not waste resources)

pid是个很实用的matlab模块，大家学习啊(pid)

对于单种群进化，多方式进化是提高全局搜索能力和收敛速度的一种有效策略。(For the single-population evolution, multi-way evolution is to improve the global search ability and convergence speed of an effective strategy.)

skin detraction Channing the skin color to another color

神经网络迭代法，数据量不大，用于图像压缩(Neural network iteration method, the data volume is not large, used for image compression)

srtm是美国nasa指定的精度为90米的全球高层数据，函数srtmshow可以利用matlab读取这样的数据，并且以mesh的形式显示他们。用法：srtmshow（‘c:/.../XXX.ttf’,60,70,60,70）。表示读取文件XXX.ttf中横向60 -70 ，纵向60 -70 的数据并显示他们。 (srtm the United States designated the accuracy of nasa' s global top 90 m data, the function srtmshow can use matlab to read this data and to display them in the form of mesh. Usage: srtmshow (' c :/.../ XXX.ttf' , 60,70,60,70). That read the file XXX.ttf 60 -70 in the horizontal, vertical 60 -70 of the data and display them.)

pv three phase grid connected system

说明：  %This function finds the cubic splines for the input data points (x,y) %Input: x = [x0 x1 ... xN], y = [y0 y1 ... yN], xi=interpolation points % KC = 1/2 for 1st/2nd derivatives on boundary specified