Weak Signal Frequency Detection Method Based on Generalized Duffing Oscillator

doi:10.1088/0256-307X/28/4/040502

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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.

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	SHI Si-Hong
	YUAN Yong
	WANG Hui-Qi
	LUO Mao-Kang

Abstract：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.

Key words： 05.10.-a 05.45.-a 05.45.Gg 05.45.Pq

收稿日期: 2010-09-03 出版日期: 2011-03-29

:	05.10.-a	(Computational methods in statistical physics and nonlinear dynamics)
	05.45.-a	(Nonlinear dynamics and chaos)
	05.45.Gg	(Control of chaos, applications of chaos)
	05.45.Pq	(Numerical simulations of chaotic systems)

引用本文:

SHI Si-Hong;YUAN Yong;WANG Hui-Qi;LUO Mao-Kang** . Weak Signal Frequency Detection Method Based on Generalized Duffing Oscillator[J]. 中国物理快报, 2011, 28(4): 40502-040502.
SHI Si-Hong, YUAN Yong, WANG Hui-Qi, LUO Mao-Kang** . Weak Signal Frequency Detection Method Based on Generalized Duffing Oscillator. Chin. Phys. Lett., 2011, 28(4): 40502-040502.

链接本文:

https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/28/4/040502 或 https://cpl.iphy.ac.cn/CN/Y2011/V28/I4/40502

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