The development of automotive radars is complex: each new sensor must be adapted to the design and material of each vehicle model so that the sensor can reliably fulfill its task. Up to now, sensor manufacturers and automotive OEMs have had to prove the functionality of their new developments in extensive road tests. This is made more difficult by the fact that the car radars must function without errors even in complex traffic situations, e.g. at inner-city junctions. In real test drives, all these conditions cannot be depicted specifically and only with considerable expenditure of time and money. As an alternative, commercially available radar target simulators are available, which can currently only display up to four scattering centres as point targets for testing the sensors.
Fraunhofer FHR is therefore developing ATRIUM (Automobile Test Environment for Radar In-the-loop Investigations and Measurements), a digital radar target simulator that can comprehensively simulate critical traffic scenarios.