【摘要】 基于统计特征的谱估计技术在现代信号处理领域发挥着极为重要的作用.选取经验模态分解(EMD)结合传统的经典功率谱估计的新方法为研究对象,讨论了这种方法的基本思想,对仿真信号进行分析,并与经典功率谱估计方法进行了比较,通过MATLAB仿真验证得出这种新的方法在信号谱估计中的谱分辨率要高于经典功率谱估计法的结论.更多还原

【Abstract】 The spectrum estimation technique based on statistical characteristics in the field of modern signal processing plays a very important role.This paper selects Empirical Mode Decomposition(EMD)combined classical power spectrum estimation method for object of study,discusses the basic idea of this method,through analysis of the simulation signals,and compares with classical power spectrum estimation method,draws the conclusion that this new method have higher spectrum resolution than classical power spectrum estimation in the signal spectrum estimation by MATLAB simulation.更多还原