codematlab-(1)-(1)

本书介绍射频微波系统设计，也包括其他阻抗匹配、天线等高频技术。(This book is about systems that operate at radio frequencies (RF) (including microwaves) where high-frequency techniques, such as impedance matching, are important.)

信号的相关性是很重要的性质，求一维，二维高斯随机数的自相关函数，并进行统计分析。(Signal correlation is very important, for the properties of one-dimensional, two-dimensional gaussian random autocorrelation, and statistical analysis. )

关于无线信道的多普勒谱 无线信道中的多普勒谱有一种经典谱请解释产生这种谱形状的机理；(1. On the radio channel of the Doppler spectrum (2) wireless channel Doppler spectrum has a classic spectrum (classic spectrum), please explain such a spectral shape of the mechanism )

确定圆形目标：读取图像并转化为二值图像，(Determine the circular target: read image and converting it into binary image,)

voice activity detection

说明：  应用matlab读取MIT-BIH中ECG .dat文件(read the .dat file of ECG signal in MIT database into matlab)

egion growing approach is the opposite of the split and merge approach: An initial set of small areas are iteratively merged according to similarity constraints. Start by choosing an arbitrary seed pixel and compare it with neighbouring pixels. Region is grown from the seed pixel by adding in neighbouring pixels that are similar, increasing the size of the region. When the growth of one region stops we simply choose another seed pixel which does not yet belong to any region and start again.

说明：  反距离权重法主要依赖于反距离的幂值，幂参数可基于距输出点的距离来控制已知点对内插值的影响。(The inverse distance weight method mainly depends on the power value of the inverse distance, and the power parameter can control the influence of known points on the interpolation based on the distance from the output point.)

说明：  Kriging插值算法的matlab工具包程序(Kriging matlab toolkit program)

主成分分析的MATLAB程序代码，mni坐标转Talairach坐标的MATLAB程序代码(Principal component analysis of MATLAB code, mni coordinates to Talairach coordinates of the MATLAB code)