Electromagnetic scattering characteristics of UXO and non-UXO objects in the presence of a water table

An investigation of the scattering characteristics of a typical UXO target versus similar non-UXO targets is done. This investigation will be done with a computer code based on the finite difference time domain (FDTD) method. Initially, comparisons are made based on targets in free space excited by a plane wave. Then more realistic features are systematically incorporated into the model to determine their effects on the scattering characteristics of the UXO. First, the plane wave excitation is replaced by a dipole. Next, the UXO is embedded in a lossy half space with realistic ground conductivity and permittivity parameters. Finally, a water table is placed underneath the UXO