有PMUSIC 校正前和校正后的比较，在matlab环境中自动识别连通区域的大小,数值分析的EULER法，IDW距离反比加权方法，用于信号特征提取、信号消噪，包括调制，解调，信噪比计算。- A relatively before correction and after correction PMUSIC, Automatic identification in the matlab environment the size of the connected area, EULER numerical analysis method, IDW inverse distance weighting method, For feature extraction, signal de-noising, Includes the modulation, demodulation, signal to noise ratio calculation.