An improved time reversal mirror based on standard linear frequency modulation waveform

doi:10.1038/s41598-020-79884-w

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	An improved time reversal mirror based on standard linear frequency modulation waveform
	Wang YK(王永康)1,5; Zhang Han 2,3,4; Li HL(李晖凌)1,5 ; Zheng Jianfeng 6; Guo L(郭亮)1
通讯作者	Zhang, Han(zhanghan@mail.ioa.ac.cn)
发表期刊	SCIENTIFIC REPORTS
	2021-01-08
卷号	11 期号:1 页码:12
ISSN	2045-2322
摘要	Time reversal mirror (TRM) technology is the adaptive focusing method evolved from the phase conjugate method in optics. Conventional incentive method in TRM technology is a narrow pulse signal with a high bandwidth. In this paper, the autocorrelation property of the TRM was proved from the time-reversal symmetry of the wave equation. The linear frequency modulation (LFM) signal is adopted as the exciting signal in the TRM, which gives the dual autocorrelation function waveform, including the exciting signal and transport channel response. Theoretical results show that the peak value of the transducer array's focusing signal is determined by the pulse width of the LFM signal and the number of array elements. In addition, the adaptive filtering deconvolution method is used to precisely regulate the input signal to ensure that the final detecting signal is the expected LFM waveform, which eliminates the effect of the transport channel and enhances matched filtering effects. The results hold great theoretical significances for the development of TRM technology in ultrasonic detection.
DOI	10.1038/s41598-020-79884-w
收录类别	SCI
语种	英语
WOS记录号	WOS:000634376100094
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
资助项目	National Natural Science Foundation of China[11772349] ; National Natural Science Foundation of China[11972354]
项目资助者	National Natural Science Foundation of China
论文分区	二类/Q1
力学所作者排名	1
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86363
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, Inst Acoust, Key Lab Noise & Vibrat, Beijing 100190, Peoples R China; 3.Chinese Acad Sci, Inst Acoust, State Key Lab Acoust, Beijing 100190, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 6.Changzhou Univ, Sch Mech Engn, Changzhou 213164, Peoples R China
推荐引用方式 GB/T 7714	Wang YK,Zhang Han,Li HL,et al. An improved time reversal mirror based on standard linear frequency modulation waveform[J]. SCIENTIFIC REPORTS,2021,11,1,:12.
APA	王永康,Zhang Han,李晖凌,Zheng Jianfeng,&郭亮.(2021).An improved time reversal mirror based on standard linear frequency modulation waveform.SCIENTIFIC REPORTS,11(1),12.
MLA	王永康,et al."An improved time reversal mirror based on standard linear frequency modulation waveform".SCIENTIFIC REPORTS 11.1(2021):12.

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