POSITION LOCATION SYSTEM

摘要

Methods and apparatus are provided for locating the position, preferably in three dimensions, of a sensor (7) by generating magnetic fields which are detected at the sensor (7). The magnetic fields are generated from a plurality of locations (1) and, in one embodiment of the invention, enable both the orientation and location of a single coil sensor (7) to be determined. The present invention thus finds application in many areas where the use of prior art sensors comprising two or more mutually perpendicular coils is inappropriate.