Electromagnetic Detection and Identification of Complex Structures

Abstract : Using electromagnetic waves to detect and identify complex structures near the earth's surface remains challenging because of ground conductivity and ground clutter. Powerful computer-based numerical techniques are required to solve canonical propagation problems involving electric dipoles, magnetic current loops, perfectly conducting and dielectric spheres, cylinders, etc. A critical need remains for real-time realistic and robust analytical techniques that extend detection and identification domains to complex structures. Our study addresses this need using electromagnetic reciprocity in combination with dyadic Green's functions and asymptotic theory of integration.