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External calibration of GPR antenna accommodated on a rover

This paper describes an external calibration of an antenna system that is used for rover based GPR-Systems. The used antenna system consists of two identical crossed double Vivaldi structures. After the description of the radar system, the electrical properties of the antenna system are characterized. The influence of the rover chassis is shown with the help of some simulated footprints. After explanation of the calibration in detail, it is applied to outdoor measurements.