Position determining system and method for operating

The invention relates to a position determining system and a method for operating. The position determining system comprises at least one transmitter connected to the object, at least two stationary receiver, and means for determining the phase difference at which the signal of the transmitter at the receiver pair arrives. Compared to conventional direction finding (Decca-bearing) is transmitted only at the location of the mobile object. This has the effect that at the location of the mobile object only one transmitter with very small dimensions and very kleinre current consumption is required. In the method for operating at least one space coordinate of the object position is at least one pair is used for two fixed receivers for determining is located in this space coordinate of the measurement range for the object position between them. It has been recognized that the position can be determined with high precision, when their three spatial coordinates are determined separately from each other each with at least one own receiver pair.