Time-frequency-power analysis of ground penatrating radar signals and identification of buried objects

Abstract

In some ground penetrating applications, it is required to deduce the physical properties, such as size, shape and electrical characteristics, of the medium or object under study from the transient scattered field measured at a set of receivers outside the scatterer by means of a collection of transmitters. A wideband antenna and radar system is considered. The FDTD method is used to solve the transient scattering problem in an arbitrary two-dimensional inhomogeneous, isotropic medium. The measured transient response of the object is analyzed. A two dimensional detection algorithm is developed using the frequency domain Green's function. Some results are given, and comparisons are made between different physical configurations.