isodata 迭代自组织的数据分析，用于信号特征提取、信号消噪，重要参数的提取，采用的是脉冲对消法，最小二乘回归分析算法，匹配追踪和正交匹配追踪。- Isodata iterative self-organizing data analysis, For feature extraction, signal de-noising, Extract important parameters, It uses a pulse of consumer law, Least-squares regre