A location system relies upon a non-coherent, FDM/TDM communication scheme to measure location parameters. A locator unit moves relative to the locatable unit. A series of messages are communicated between the locator unit and the locatable unit. Through feedback provided from the locator unit to the...http://www.google.de/patents/US5515062?utm_source=gb-gplus-sharePatent US5515062 - Location system and method with acquisition of accurate location parameters
