Acoustics Research Group, Department of Physics and Astronomy, Brigham Young University, N283 Eyring Science Center, Provo, Utah 84602, USA.
J Acoust Soc Am. 2011 Oct;130(4):EL219-25. doi: 10.1121/1.3635378.
The ability of the time reversal process to reconstruct sources of finite size relative to a wavelength is investigated. Specifically the quality of the spatial reconstruction of a finite sized source will be presented through the use of time reversal experiments conducted on an aluminum plate. The data presented in the paper show that time reversal can reconstruct a source equally well regarding less of its size, when the source is a half wavelength or less in size. The quality of spatial reconstruction when the source is larger than a half wavelength progressively decreases with the size of the source.
研究了时间反转过程相对于波长重建有限大小源的能力。具体来说，通过在铝板上进行的时间反转实验，展示了有限大小源的空间重建质量。本文所呈现的数据表明，当源的尺寸为半波长或更小时，时间反转可以同样很好地重建源的较小部分。当源的尺寸大于半波长时，空间重建的质量会随着源的尺寸逐渐降低。
