一种精确检测未知弱复合周期信号频率的非线性融合方法  

A nonlinear hybrid method for detecting the frequency of unknown weak composite periodic signal

作　　者：张政伟[1] 樊养余[1] 曾黎[1] 

机构地区：[1]西北工业大学电子信息学院,西安710072

出　　处：《物理学报》2006年第10期5115-5121,共7页Acta Physica Sinica

基　　金：陕西省自然科学基金(批准号:2003F40);航空科学基金(批准号:04F53035)资助的课题.~~

摘　　要：研究了信号经随机共振器后所产生的奇倍频现象,巧妙获得了混沌检测子的参考频率,由混沌检测子的“频率选择性”滤除了其中的虚假频率.The odd multiple frequency phenomenon emerging in the stochastic resonance was studied, and some new theoretical conclusions was drawn. Based on these conclusions we found the reference frequency which must be set in the chaotic detector. Using the frequency selectivity of chaotic detector, the false frequency existing in the odd multiple frequency was filtered out.

关 键 词：弱复合周期信号 随机共振 奇倍频现象 混沌相变 

分 类 号：TN911.7[电子电信—通信与信息系统]