使用平均周期图法，窗函数法，以及两种方法的混合来进行谱估计。文档中从理论到建模，并对这几种方法进行了比较。希望对学习数2有帮助。-Use the average periodogram method, window function method, as well as two methods to carry out a mixed spectrum estimation. Documents from theory to modeling, and these methods were compared. Want to learn the ADSP helpful.