The Detection of Hostile Objects
Abstract
This grant is concerned with the problem of the detection of decoys and objects buried in the earth from measured electromagnetic scattering data at fixed frequency in the resonance region. The proposed research includes the problem of determining the shapes and material properties of the unknown scattering objects, in particular the surface conductivity and index of refraction. Central to this investigation has been the study of a new class of elliptic problems called the interior transmission problems as well as the use of the ultra-weak method to solve direct scattering problems in order to generate data for the inverse problem. The main accomplishments are the development of 1) an algorithm for determining the shape and surface conductivity of a partially coated dielectric, 2) the reciprocity gap functional method for imaging of subsurface caves and tunnels and 3) a formula for determining a lower bound for the index of refraction, all from a knowledge of the scattered field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 15, 2008
- Accession Number
- ADA480624
Entities
People
- David Colton
- Fioralba Cakoni
- Peter Monk
Organizations
- University of Delaware