Method for determining a real position of a trailer tow ball of a tow hitch of a motor vehicle by means of an assistance system of the motor vehicle, assistance system as well as motor vehicle

摘要

The invention relates to a method for determining a real position (X, Y, Z) of a trailer tow ball (6) of a tow hitch (4) of a motor vehicle (1) by means of an assistance system (9) of the motor vehicle (1) by: capturing the trailer tow ball (6) and determining a characterizing property (11) of the trailer tow ball (6), determining a relative position (x, y) of the characterizing property (11), determining a first real space coordinate (X) and a second real space coordinate (Y), presetting a third real space coordinate (Z) for the third real space coordinate (Z) within a predetermined coordinate interval, generating a comparative position of the trailer tow ball (6) at least depending on the preset third real space coordinate (Z) by means of the electronic computing device (12), determining the real position (X, Y, Z) with the preset third real space coordinate (Z) upon coincidence of the relative position (x, y) with the comparative position. Further the invention relates to an assistance system (9) and to a motor vehicle (1).