最大似然（ML）准则和最大后验概率（MAP）准则，应用小区域方差对比，程序简单，matlab程序运行时导入数据文件作为输入参数，旋转机械二维全息谱计算，是路径规划的实用方法，研究生时的现代信号处理的作业。-Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, Application of small area variance comparison, simple procedures, Import data files as input parameters matlab program is running, Rotating machinery 2-d holographic spectrum calculation, Is a practical method of path planning, Modern signal processing jobs when the graduate.