Analysis of GPR Antenna System Mounted on a Vehicle

This letter describes a ground penetrating radar (GPR) antenna system mounted on a moving vehicle for the exploration of the subsurface. The antenna system includes two identical half-ellipse antennas: One is used for transmission, and the other is for reception. Each antenna has a pair of half-elliptical-shaped arms, which are loaded by continuous resistive elements. A shallow rectangular conducting backed cavity is attached above the antenna system. The antenna efficiency, VSWR, radiation patterns, and isolation are analyzed. The time-domain waveforms of the antenna system are also given. The results of simulations and measurements are compared together, and good agreements between them are achieved. The results show that the antenna system is suitable for a variety of broadband radar applications under different conditions.