利用间歇混沌检测含噪未知频率信号的研究

doi:10.3969/j.issn.1000-1158.2019.03.20

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Abstract It is found that changes both of the frequency of measured signal and interference noise could cause the change of interval of intermittent chaos.The correlation between the frequency of the measured signal and the interference noise on the intermittent chaotic characteristics is analyzed through simulation experiments.The effects on the intermittent chaotic characteristics by the frequency and the phase angle of the measured signal are analyzed theoretically.A method for measuring the signals of unknown frequency in noisy environment by using intermittent chaotic characteristic changes is proposed.Experiments are designed to detect the frequency of acoustic signals in both noisy and noiseless environments.The experiments show that the detection of the signals of unknown frequency by intermittent chaos in noise by the Liu-cos chaotic system is better than that by Duffing chaotic system.

Key words： metrology chaotic system intermittent chaos frequency detection acoustic signal detection

Received: 13 June 2018 Published: 19 April 2019

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TB95

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	Articles by authors
	LIU Jian-ming
	FENG Song-he
	REN Li-na
	LIU Fu-cai

Cite this article:

LIU Jian-ming,FENG Song-he,REN Li-na, et al. Study on Using Intermittent Chaos to Detect Unknown Frequency Signal in Noise[J]. Acta Metrologica Sinica, 2019, 40(3): 472-476.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.03.20 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I3/472

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