期刊
WAVE MOTION
卷 53, 期 -, 页码 80-93出版社
ELSEVIER
DOI: 10.1016/j.wavemoti.2014.11.005
关键词
Time reversal; Super-resolution; Moving sources
资金
- LABEX WIFI (Laboratory of Excellence) within the French Program Investments for the Future [ANR-10-LABX-24, ANR-10-IDEX-0001-02 PSL]
- ANR
- ERC [MULTIMOD-267184]
This paper presents a detailed analysis of time-reversal experiments involving a moving point source that emits a pulse. Different configurations are addressed with full-aperture or partial-aperture time-reversal mirrors and with subsonic or supersonic sources. Doppler effects and lack of source-receiver reciprocity significantly affect the time-reversal refocusing when the velocity of the source becomes comparable as or larger than the speed of propagation. The main result is that refocusing can be enhanced when the velocity of the source becomes close to the speed of propagation compared to the classical diffraction-limited refocusing properties when the source does not move, and this super-resolution effect can be quantified by simple and explicit formulas. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据