基于混沌相平面变化的弱信号检测方法研究

Research of weak signal detection based on change of chaotic phase trace

首先分析Duffing方程的基本形式 ,然后阐述了基于相平面变化进行弱信号检测的工作原理 ,并给出仿真模型 ,最后利用此模型进行仿真实验。结果表明 ,此实验方法具有很低的信噪比工作门限 ,从而证明了此方法的确是可行的。

This paper first analyzes the basic form of Duffing equation,and then describes the principle of weak signal detection based on the change of phase trace.In addition,the simulation model is given.Finally,with this model,a lot of simulation experiments are done.The experiment shows this method has lower SNR,consequently,is proved to be feasible.Thereby,this method fills up a blank to weak signal detection theory.