针对EMD方法的不足,包括脚本文件和函数文件形式，现代信号处理中谱估计在matlab中的使用，使用大量的有限元法求解偏微分方程，模拟数据分析处理的过程，与理论分析结果相比，相关分析过程的matlab方法。- For lack of EMD, Including scr ipt files and function files in the form, Modern signal processing used in the spectral estimation in matlab, Using a large number of finite element method to solve partial differential equations, Analog data analysis processing, Compared with the results of theoretical analysis, Correlation analysis process matlab method.