基于混沌——现代谱估计正弦信号检测方法

Method of Measuring Sine Signal Based on Chaos-modern Spectrum Estimation

介绍了测量正弦信号的频域方法——传统谱估计方法及现代谱估计方法。在此基础上提出了将现代谱估计方法与著名混沌系统(杜芬振子系统)构成混合检测系统,共同检测微弱正弦信号方案。给出仿真系统框图及仿真结果。结果表明用此方法在估计正弦信号时,幅度测量精度被提高,此方法是进一步发展弱信号检测的有效途径之一。

The frequency methods of measuring sine signal are introduced, which are traditional spectrum estimation and modern spectrum estimation. The modern spectrum estimation is combined with famous chaotic system (Duffing oscillator system), which constitutes mixed system to measure weak sine signal. The simulation system block and results are given. It is shown that the measuring accuracy to estimate sine signal is improved, which is one of effect methods to measure weak signals.