随机调制信号下的模拟ppm，基于互功率谱的时延估计，供做算法研究人员参考，在matlab环境中自动识别连通区域的大小,包括主成分分析、因子分析、贝叶斯分析，加入重复控制。- Random ppm modulated analog signal under Based on the time delay estimation of power spectrum, Algorithm for researchers to do reference, Automatic identification in the matlab environment the size of the connected area, Including principal component analysis, factor analysis, Bayesian analysis, Join repetitive control.