Aubry Alexandre, Derode Arnaud
Laboratoire Ondes et Acoustique, ESPCI, Université Denis Diderot (Paris VII), CNRS (UMR 7587), 10 rue Vauquelin, 75005 Paris, France.
Phys Rev Lett. 2009 Feb 27;102(8):084301. doi: 10.1103/PhysRevLett.102.084301. Epub 2009 Feb 26.
The singular values distribution of the propagation operator in a random medium is investigated in a backscattering configuration. Experiments are carried out with pulsed ultrasonic waves around 3 MHz, using an array of transducers. Coherent backscattering and field correlations are taken into account. Interestingly, the distribution of singular values shows a dramatically different behavior in the single and multiple-scattering regimes. Based on a matrix separation of single and multiple-scattered waves, an experimental illustration of imaging through a highly scattering slab is presented.
在背散射配置下研究了随机介质中传播算子的奇异值分布。使用换能器阵列，以3MHz左右的脉冲超声波进行实验。考虑了相干背散射和场相关性。有趣的是，奇异值分布在单次散射和多次散射 regime 中表现出截然不同的行为。基于单次散射波和多次散射波的矩阵分离，给出了通过高散射平板成像的实验示例。
