NICOP - ADJOINT MODELING FOR GEOACOUSTIC INVERSION
Abstract
The proposed work will use the adjoint method in order to invert for the acoustic parameters of the bottom consisting of a sediment layer and a semi-infinite subbottom region. Specifically, given the complex field at a given distance from a known source along a vertical array in a known water column we are seeking two densities, sound speeds and attenuation, as well as the thickness of the sediment layer. The propagation model used is the parabolic approximation and the bottom boundary condition is given by a Neumann to Dirichlet map at a computational boundary inside the bottom region. The final result will be hybrid algorithm combining the adjoint method with e.g. the matched field processing code. The algorithm will be tested in simulated as well as experimental data.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 03, 2017
- Source ID
- N629091712044
Entities
People
- John Papadakis
Organizations
- Office of Naval Research
- United States Navy