RECONSTRUCTING LOCATIONS OF SMALL VOLUME PERTURBATIONS OF THE REFRACTIVE INDEX FOR THE ACOUSTIC EQUATION
In this paper, we determine a formula for calculating the refractive index n for the acoustic equation from the partial Dirichlet-to- Neumann map (DN) associated to n. We apply the results to identify locations and values of small volume perturbations of this refractive index at fixed frequency w.
inverse problem, fixed frequency, the partial Dirichlet-to-Neumann map (DN).
