The invention relates to a device and a method for determining the three-dimensional position of an object. The device comprises at least one transmitter which is suitable for emitting a signal; at least three receivers, wherein the at least three receivers and the at least one transmitter are arranged preferably within a first plane, a first receiver and a second receiver are preferably arranged along a first straight line, and a third receiver is arranged preferably at a distance from the first straight line; and a processor, which is configured to calculate at least three propagation times, each propagation time being the time required by the signal to travel from the transmitter to the respective receiver via the object. The processor is additionally configured to determine the three-dimensional position of the object from the calculated propagation times and from the arrangement of the transmitter and the receivers.