一种欠采样信号频率模糊处理方法  

The Frequency Ambiguity Estimation Method for Under Sampled Signals

作　　者：李振华[1] 郭绍禹[1] 

机构地区：[1]中国电子科技集团公司第二十七研究所,郑州450047

出　　处：《电光系统》2010年第2期24-27,共4页Electronic and Electro-optical Systems

摘　　要：对利用中国剩余定理解欠采样信号频率模糊的方法作了较详细的分析，并将采样器从两个推广到多个采样器情况，清晰地叙述了无模糊频率估计范围与虚拟采样速率之间的大系；时宽带信号，特别是对线性调频信号提出了利用信号频谱的相关性解模糊处理方法。仿真结果显示本方法是有效的，有着良好的工程应用前景。This paper discusses the use of Chinese Remainder Theorem in understanding frequency ambiguity of under-sampled signals. We expand the situations from two sampler to multiple samplers, to describe the relationship between non-ambiguity frequency range evaluation and virtual sampling rate. For broadband signals, espe- cially for linear FM signals, we propose the method of calculating frequency ambiguity by using spectrum correlation. The simulating results show that this method is effective, and has a good practical application prospect.

关 键 词：中国剩余定理 欠采样 解模糊 相关处理 

分 类 号：TN911.6[电子电信—通信与信息系统]