A two-stage method for inverse medium scattering

  title={A two-stage method for inverse medium scattering},
  author={Kazufumi Ito and Bangti Jin and Jun Zou},
  journal={J. Comput. Physics},
We present a novel numerical method to the time-harmonic inverse medium scattering problem of recovering the refractive index from near-field scattered data. The approach consists of two stages, one pruning step of detecting the scatterer support, and one resolution enhancing step with mixed regularization. The first step is strictly direct and of sampling type, and faithfully detects the scatterer support. The second step is an innovative application of nonsmooth mixed regularization, and it… CONTINUE READING