Analysis of multiband monostatic and bistatic radar signatures of wind turbines

Wind farm clutter can negatively affect Air Traffic Control and air defence radar systems by obscuring true targets and by generating non-stationary clutter which increases the probability of false alarm. Bistatic and multistatic radar may mitigate these effects thanks to reduced clutter radar cross section and Doppler spread with respect to conventional monostatic systems. This paper presents the results of recent measurements taken with two radar systems to measure the simultaneous monostatic and bistatic signature of wind turbines, at S-band and X-band. This initial analysis shows the bistatic Doppler signature of wind turbines and investigates the main differences seen at modest bistatic angles. Polarimetric variations are also analysed using co-polarised VV and HH and cross-polarised VH data.