The 2D Scattering Equations for Dielectric Targets

The behavior of the electromagnetic signal radiated by a ground-penetrating radar (GPR) and scattered by buried targets is governed by Maxwell's equations. So, in order to provide hopefully deep enough and self-consistent discussion of GPR data processing, this chapter starts from the beginning and provides the derivation of the whole formulation up to the migration and the linear inversion. This chapter describes the derivation of the scattering equations without considering the effect of the antennas, and the calculation of the incident field radiated by a filamentary current. It discusses plane wave spectrum and effective length of an electromagnetic source in a homogeneous space. The chapter considers the problem of inserting the source and receiver characteristics into the scattering operator. It calculates the far field in a homogeneous lossless space in terms of plane wave spectrum.