Weak Signal Frequency Detection Method Based on Generalized Duffing Oscillator

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2011,（4）
• 页码范围: 43-46
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/28/4/040502

摘要

The sensitive characteristic to the initial value of chaos system sufficiently demonstrates the superiority in weak signal parameters detection.Analyzing the current chaos-based frequency detection method, a novel generalized Duffing equation is proposed to detect weak signal frequency.By choosing a suitable adjusting factor, when the outside driving force frequency is equal to that of the detected signal, the generalized Duffing oscillator is in great period state, which can obtain the frequency information of the detected signal.The simulation results indicate this method is rapidly convenient and shows better accuracy.