Investigating the influence of rotating steel platform in the RCS measurement of vehicles at 22–26 GHz for automotive radar application

This paper investigates the influence of rotating steel platform in the RCS (Radar Cross Section) measurement of vehicles at 22-26 GHz for automotive radar application. Across several measurement steps, we compare different RCS measurement results in order to eliminate the undesired RCS contribution caused mainly by the rotating steel platform. We demonstrate that when it is difficult or impossible to use microwave absorbers on the steel platform, an alternative method can be applied. Finally, with the help of 2D radar image post processing, we can also identify and separate the RCS contribution of each element (vehicle, steel platform, ground/multipath/clutter) in the hologram image, and therefore obtain the pure RCS distribution of the tested vehicle.