A local positioning method for use with a vehicle system in an industrial environment, the method including the steps of communicating a first transmitter identification associated with a first transmitter location, a second transmitter identification associated with a second transmitter location, and...http://www.google.de/patents/US6532416?utm_source=gb-gplus-sharePatent US6532416 - Apparatus, method and system for a wireless communication and local positioning system in an automated, industrial and/or manufacturing environment
