摘要
nV级正弦信号的测量是弱信号检测领域中的一个尖端课题 ,现有的弱信号检测方法的测量下限都较高。本文在归纳检测微弱正弦信号自相关方法的基础上 ,首次提出了将混沌系统应用到自相关检测nV级正弦信号的方法。给出了测量系统仿真模型 ,并与现有的测量方法作了比较。仿真结果表明 ,此方法在测量nV级微弱正弦信号方面取得了满意效果 ,且信噪比门限很低 ,有望成为测量nV级正弦信号的一种有效方法。
Measuring nV grade signal is a top field of detecting weak sine signals.At present,the various metheods' signal to noise rates are higher.In this paper,On the basis of auto correlation method which is sumed up to detect weak signals.,a new method used to measure nV grade signals is presented,in which chaos system is applied in auto correlation.Asimulation model is given,and also the simulation results are contrasted with existing method.It shows this method achieves a satisfying effect and has lower signal to noise rate So,it will be an effective method in measuring nV grade sine signal.
出处
《电工技术学报》
EI
CSCD
北大核心
2002年第5期87-90,共4页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目 (69872 0 12 )
