POSITIONING SYSTEM

The invention relates to a ground-based positioning system for determining a location of a mobile object (1), comprising a plurality of fixed ground stations (2a-2c) respectively comprising a transmitting and/or receiving unit (3a-3c), and at least one transmitting and/or receiving unit (5) that is arranged on the object, the transmitting mils being set up so transmit position signals and the receiving units being set up to receive the position signals transmitted by the transmitting units. The ground-based positioning system comprises at least one position determination unit (4, 6) connected communicatively to at least some of the transmitting and/or receiving nuns (3a-3c, 5), said position determination unit (4, 6) being set up to determine distances between the fixed transmitting and/or receiving units (3a-3c) of the ground stations (2a-2c) and the at least one transmitting and/or receiving unit (5) arranged on the object (1), for determining at least one receiving angle of she received position signals on the respective receiving unit and for determining a relative speed between at least one of the fixed transmitting and/or receiving units (3a-3c) of the ground stations (2a-2c) and the at least one transmitting and/or receiving unit (5) arranged on the object (1), according to the position signals sent by the fixed transmitting units and received by the at least one receiving unit arranged ins the object, and/or sent by the at least one transmitting unit arranged on the object and received by the fixed receiving units, and for determining