摘要
现代谱估计方法是在强噪声背景下进行谱估计的有效方法。本文利用现代谱估计的方法 ,分别使用 MUSIC算法 ,Welch算法和修正协方差算法对 PSK信号中心频率进行了估计。本文给出了计算机仿真的结果 ,将 3种算法的估计结果进行了比较。结果表明 ,利用现代谱估计方法可有效地估计 PSK信号的中心频率 ,其中修正协方差法在几种谱估计方法中性能稳定 ,复杂度适中 ,且计算速度较快。
Methods of modern spectral estimation are effective methods of spectral estimation under the background of strong noise This paper shows methods to estimate the frequency of PSK signals which includes MUSIC method, Welch algorithm and modified covariance method Computer simulations has been made in this paper and the results of the three algorithm have been compared, which shows that the methods of modern spectral estimation can estimate the frequency of PSK signals effectively, in which the modified covariance algorithm has a stable performance, low complexity and rapid speed of calculation
出处
《现代电子技术》
2003年第23期44-47,共4页
Modern Electronics Technique
关键词
PSK
频率估计
谱估计
修正协方差
PSK
frequency estimation
spectral estimation
modified covariance method
