中文摘要：

功率谱估计可以分为经典谱估计和现代谱估计。现代谱的估计可建立AR模型对离散信号进行谱估计、建立MA模型和ARMA模型进行谱估计。基于Matlab对三种模型进行仿真,并对结果进行了分析。结果显示,三种模型对现代谱的获得是有效的,并得到较好的谱估计。

英文摘要：

Power spectrum estimation can be divided into classical spectral estimation and modern spectral estimation.Modern spectral estimation model can establish AR model,MA model and ARMA model for discrete signals to perform spectral estimation.These three models can be simulated based on Matlab,and the results are analyzed.The results show that the three models of modern spectrum are valid,and can get better spectrum estimation.