METHOD AND CONTROL UNIT FOR THE SATELLITE-BASED LOCALIZATION OF A VEHICLE IN A MAP-BASED REFERENCE SYSTEM

A method for the satellite-based localization of a vehicle in a map-based reference system. A trajectory in a map-based reference system is determined at regular time intervals, on which trajectory the vehicle is to be brought to a stop at least partially automatically in a defined emergency, and are stored in a circular buffer. In the defined emergency and in the event of failure of the at least one camera used for the full localization, an emergency trajectory is selected from the trajectories stored in the circular buffer. An initial vehicle position in the map-based reference system is determined based on the emergency trajectory. A vehicle orientation is ascertained based on a continuously acquired yaw rate of the vehicle. The stretch of route traveled by the vehicle is ascertained based on position data of the vehicle that are acquired in a satellite-based manner.