An Overview of Wind Turbine Interference Research Activities at Fraunhofer FHR

This paper provides an overview of research activities at the Fraunhofer Institute for High Frequency Physics and Radar Techniques FHR in Germany, with respect to possible interferences from wind turbines against radar systems. Starting from phenomenological effects observed in measurements behind a wind farm, various types of electromagnetic simulations have been performed in order to investigate the principal scattering mechanisms.