Multi-component GPR imaging for different heights of source and receiver antennas

Abstract

For imaging ground penetrating radar (GPR) data, three of the most important parameters are the wave speed, polarisation and amplitude. Choosing an appropriate forward model that incorporates these three parameters is a critical aspect of imaging. A new multi-component imaging algorithm that takes into account the polarisation and vectorial radiation characteristics of GPR data has recently been developed. The forward model used to calculate the imaging operators in this imaging algorithm is based on far-field expressions for the radiation characteristics of a dipole present on an interface. Here, multi-component images obtained using elevated source and receiver antennas are presented. As the height of the antennas above the surface is increased, the bandwidth of the scattered data decreases. This results in decreasing spatial resolution for increasing height of the antennas.