摘要
介绍了传统谱估计的基本原理,通过MATLAB实现经典谱估计的各种方法,比较了它们的性能指标,着重分析了Welch方法中不同窗函数对功率谱估计的影响,指出其优缺点,得出了一些有参考价值的结论。
This paper introduces the basic principle of traditional spectrum estimation, and compares the performance indexes of different methods that can realize the classic spectrum estimation by MATLAB,and focuses on analyzing the influence of different window function in Welh method on the power spectrum estimation,points out the advantages and disadvantages, educes some conclu- sions with reference value.
出处
《舰船电子对抗》
2009年第2期84-86,共3页
Shipboard Electronic Countermeasure
关键词
WELCH法
周期图
谱估计
Welch method
period diagram
spectrum estimation
