Optimal adaptive focusing through heterogeneous media with the minimally invasive inverse filter.

@article{Vignon2007OptimalAF,
  title={Optimal adaptive focusing through heterogeneous media with the minimally invasive inverse filter.},
  author={Francois Vignon and Julien de Rosny and Jean-François Aubry and Mathias Fink},
  journal={The Journal of the Acoustical Society of America},
  year={2007},
  volume={122 5},
  pages={2715-24}
}
The inverse filter is a technique used to adaptively focus waves through heterogeneous media. It is based on the inversion of the Green's functions matrix between the M transducers of a focusing array and N control points in the focal area. The inverse filter minimizes the pressure deposited around the focal point. However it is highly invasive, requiring the presence of N transducers or hydrophones in the focal area at the control points' locations to measure the Green's functions. This paper… CONTINUE READING