Multi‐configuration ground penetrating radar data

Abstract

Traditionally Ground Penetrating Radar (GPR) measurements are conducted using two co-polarized antennas both oriented perpendicular to the direction of propagation. Configurations where the antennas are held parallel to the direction of propagation or cross-polarized to each other have hardly been used. In this study we show that collection of this kind of data will increase our knowledge of buried objects with a distinct orientation, like cylinders. By recording the electric field in two different orientations using multi-configuration data acquisition, and with the use of Alford rotation we can extract information about the orientation of these objects. Because the reflection of these objects is angle-dependent, we can exactly predict the angle of orientation of the objects. A GPR survey has been conducted at a controlled test-site. The results of this survey show good prediction of the angle of orientation of the buried objects and confirm the expected theoretical results. To obtain a better understanding of the different sources for errors and the underestimate of the angle of orientation an error analysis