Abstract
Accurate position information is crucial in antenna measurements. This is especially challenging for unmanned aerial vehicle (UAV)-based antenna measurement systems. UAVs often rely on global navigation satellite systems (GNSSs) for position determination. Hereby, the GNSS antenna mounting environment significantly influences the GNSS position accuracy. Hence, this paper investigates the influence of different groundplane materials, shapes and sizes on multi-band patch and helical GNSS antennas with respect to the achievable position accuracy. The groundplanes are mounted directly below the antennas and are made of aluminum or copper plated printed circuit boards (PCBs) as lightweight implementation for UAV applications. Supplementary antenna groundplanes improve the GNSS position accuracy in all investigated cases.
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