A system and method involve tracking the location of objects within an area of interest using transmitted-reference ultra-wideband (TR-UWB) signals. The system includes at least three base stations communicating with a central processor, at least one mobile device and at least one fixed beacon transmitter...http://www.google.com/patents/US20030069025?utm_source=gb-gplus-sharePatent US20030069025 - Transmitter location for ultra-wideband, transmitted-reference CDMA communication system
