An improved time reversal mirror based on standard linear frequency modulation waveform
文献类型：期刊论文
| 作者 | Wang YK(王永康)2,6; Zhang Han3,4,5; Li HL(李晖凌)2,6 ; Zheng Jianfeng1; Guo L(郭亮)6
|
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2021-01-08 |
| 卷号 | 11期号:1页码:12 |
| ISSN号 | 2045-2322 |
| DOI | 10.1038/s41598-020-79884-w |
| 通讯作者 | Zhang, Han(zhanghan@mail.ioa.ac.cn) |
| 英文摘要 | 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. |
| 分类号 | 二类/Q1 |
| 资助项目 | National Natural Science Foundation of China[11772349] ; National Natural Science Foundation of China[11972354] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000634376100094 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86362]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Changzhou Univ, Sch Mech Engn, Changzhou 213164, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Acoust, State Key Lab Acoust, Beijing 100190, Peoples R China; 5.Chinese Acad Sci, Inst Acoust, Key Lab Noise & Vibrat, Beijing 100190, Peoples R China; 6.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, 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. |
入库方式： OAI收割
来源：力学研究所
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