基于L-Y振子的弱信号检测分析

Analysis about Weak Signal Detection Approach via L-Y Oscillator

分析了L-Y振子的混沌特性,研究了基于相平面变化的微弱信号检测,利用Lyapunov指数定量分析法求出其混沌解,并用时序图进行了验证。仿真结果表明,L-Y振子只对与策动力同频率的微弱信号敏感,而对白噪声和其他微弱信号(即使有一定的相关性)有较强的免疫力,且将该振子应用于实际微弱信号的检测中具有一定的可行性。

The chaotic characteristics of L - Y oscillator is analyzed, and the Lyapunov exponent is discussed tors. The fluence of show that the white as kind of quantitative analysis method which can determine chaotic threshold of L- Y oscilla- principle of weak signal detection based on the change of phase trace is described, and the in- noise to the system status in the chaos detection process is also studied. Simulation experiments the L - Y noise and lator to weak signal oscillator is sensitive to the small signal with the same frequency and immune against the other interference signal, even if they are pertinent. The application of the oscil- detection is feasible.