Development of Intrinsic Models for Describing Near-Field Antenna Effects, Including Antenna-Medium Coupling, for Improved Radar Data Processing Using Full-Wave Inversion
Proper description of antenna effects on ground-penetrating radar (GPR) data generally relies on numerical methods such as the Method of Moments (MoM) or Finite-Difference Time-Domain (FDTD) modeling approaches. Yet, numerical methods are computationally expensive and accurate reproduction of real measurements has remained a major challenge for many years. Recently, intrinsic modeling approaches, through which radar antennas are effectively described using their fundamental features, have demonstrated great promise for near-field radar antenna modeling. Although such approaches are not suited for designing radar antennas, they are particularly powerful for fast and accurate modeling, which is a prerequisite when full-wave inversion is applied, e.g., for estimating medium electrical properties. These approaches are also of great interest for filtering out antenna effects from measured radar data for improved subsurface imaging.
KeywordsField Point Differential Global Position System Differential Global Position System Perfect Electrical Conductor Antenna Height
The author acknowledges the COST Action TU1208 “Civil Engineering Applications of Ground Penetrating Radar”, supporting this work. This research was funded by the Fonds de la Recherche Scientifique (FNRS, Belgium) and the Université catholique de Louvain (UCL, Belgium).
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