Method and device for determining a radar cross section, method for training an interaction model as well as radar target emulator and test stand

摘要

The present invention relates to a method (1a) and a device (4) for determining a radar cross section (σ), a method (1b) for training an interaction model (W), a radar target emulator (10) for manipulating a radar signal and a test bench (100 ) for a vehicle (2). The propagation of a virtual radar signal (V) is simulated on the basis of an interaction model (W) in a simulated environmental scenario containing the simulated radar target (Z). In this case, an interaction of the virtual radar signal (V) with the simulated radar target (Z) is modeled in such a way that a physical variable characterizing the virtual radar signal (V) is transformed into a directional component (Ga), which is directed to a scattering of the virtual radar signal (V ), and divided into a diffuse component (Gb) corresponding to an isotropic spread of the virtual radar signal (V). A value (G) of the physical quantity is determined at a receiver point (E) in the simulated environmental scenario taking into account the directional component (Ga) and the diffuse component (Gb), and the radar cross section (σ) of the simulated radar target (Z) is determined from derived value (G) of the physical quantity derived at the receiver point (E).