基于AR模型的载频测量  

AR Model Based Carrier Frequency Measurement

作　　者：杨书玲[1] 李艳斌[1] 

机构地区：[1]中国电子科技集团公司第54研究所,河北石家庄050081

出　　处：《无线电工程》2006年第9期23-25,共3页Radio Engineering

摘　　要：从现代谱估计出发,利用Yule_Walker方程构造信号的AR模型,从中提取信号的调制载波频率信息。信号的功率谱表示了信号能量的分布。用谱估计法估计出载波频率后,依据频谱对所测频率进行修正,可有效提高载波频率的测量精度。On the basis of modern spectrum estimation, AR model is constructed according to Yule-Walker equation, from which the information of carrier frequency is extracted. Signal power distribution is expressed by PSD. Estimated by spectrum analysis, the frequency can be further modified according to PSD, so measurement precision of carrier frequency is improved.

关 键 词：AR模型 Yule_Walker方程 最终预测误差(FPE)准则 

分 类 号：TN911.72[电子电信—通信与信息系统]