改进的AR模型谱估计法提取载波频率

An Improved AR Model Spectral Estimation for Carrier Frequency

介绍了一种利用改进的现代谱估计方法来估计通信信号载波频率的算法 .把载波的提取看成受到干扰的正弦信号的频率估计 .首先对通信信号进行AR建模 ,求出AR模型表达式的零极点 ,再考虑这些零极点的频率响应 ,去掉那些对频率精度影响较大的零极点 。

In this paper is proposed an improved AR model spectral estimation for carrier frequency in which the extraction of carrier waves is seen as a frequency estimation of the interfered sinusoidal signals.An AR model was established for communication signals,then the zero pole points of its expression were found out,and then the frequency responses of these zero pole points which would exert bad effects upon frequency precision are excluded so as to raise the precision of spectral estimation.