Theory and applications of time reversal and interferometric imaging

@article{Borcea2003TheoryAA,
  title={Theory and applications of time reversal and interferometric imaging},
  author={Liliana Borcea and George C Papanicolaou and Chrysoula Tsogka},
  journal={Inverse Problems},
  year={2003},
  volume={19}
}
In time reversal, an array of transducers receives the signal emitted by a localized source, time reverses it and re-emits it into the medium. The emitted waves back-propagate to the source and tend to focus near it. In a homogeneous medium, the cross-range resolution of the refocused field at the source location is λ0L/a, where λ0 is the carrier wavelength, L is the range and a is the array aperture. The refocusing spot size in a homogeneous medium is independent of the bandwidth of the pulse… 

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