Patent ID: 7787329

Claim:
A locating arrangement comprising: a plurality of ultrasonic transmitters arranged along a path; at least one electromagnetic radiation receiver; at least one identification unit comprising an ultrasonic receiver and an electromagnetic radiation transmitter; and an evaluation unit; wherein the distance between adjacent ultrasonic transmitters of the plurality of ultrasonic transmitters is greater than one meter; wherein the evaluation unit is operable to determine a location with a coarse resolution depending on a reception signal on the at least one electromagnetic radiation receiver, said reception signal having been sent by the electromagnetic radiation transmitter of the at least one identification unit; and wherein the evaluation unit is further operable to carry out a finer spatial resolution relative to the coarse resolution based on a propagation time measurement determined with the aid of at least two ultrasonic transmitters of the plurality of ultrasonic transmitters and the ultrasonic receiver of the at least one identification unit.