常见的功率谱估计方法及其Matlab仿真

Common Power Spectrum Estimation Methods and Matlab Simulation

功率谱估计是数字信号处理的重要内容之一,又分为经典谱估计和现代谱估计。经典谱估计主要是周期图法及其改进方法,现代谱估计则有参数模型与非参数模型谱估计之分。文中主要介绍了几种常见的功率谱估计方法的原理、特点,并进行了Matlab仿真分析,发现基于AR参数模型的Burg法效果较好。

An important part of the digital signal processing, power spectrum estimation is divided into classical and modern spectral estimation spectral estimation. Classical spectral estimation refers mainly to the periodogram method and its improvement. Modern spectral estimation covers parametric model and non-parametric model spectrum estimation. This paper describes the principles and characteristics of several common power spectrum estimation methods, and makes the Matlab simulation analysis to show that Burg method based on AR parameter model is better.