| An improved time reversal mirror based on standard linear frequency modulation waveform | |
Wang YK(王永康)1,5; Zhang Han2,3,4; Li HL(李晖凌)1,5 ; Zheng Jianfeng6; Guo L(郭亮)1
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| Corresponding Author | Zhang, Han([email protected]) |
| Source Publication | SCIENTIFIC REPORTS
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| 2021-01-08 | |
| Volume | 11Issue:1Pages:12 |
| ISSN | 2045-2322 |
| Abstract | 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 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000634376100094 |
| WOS Research Area | Science & Technology - Other Topics |
| WOS Subject | Multidisciplinary Sciences |
| Funding Project | National Natural Science Foundation of China[11772349] ; National Natural Science Foundation of China[11972354] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86363 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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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| File Name/Size | DocType | Version | Access | License | ||
| Jp2021140.pdf（3227KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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