基于Matlab的Welch法功率谱估计

Analysis of Welch Method in PSE Based on Matlab

在经典谱估计领域,由Welch提出的修正周期图法获得了有效的应用,在多数情况下,其频率分辨率、估计方差能满足实际应用.运用Matlab软件进行Welch算法仿真与分析,从而得出一些有价值的结论.

In the field of classical chart, the amended periodic table put forward by Welch is proved to be effective in application. Under many conditions, its frequency distinction and estimate variance can satisfy the practical application. This paper gives an example to simulate them with Matlab, analyses the performances of these methods and draws some useful conclusions.