A server provides GPS aiding data to mobile GPS receivers are provided with an enclosed environment (e.g., within a large building) where the received GPS signal is likely to be weak or suffer multipath signal interference. The server receives GPS signals from one or more antennas within the enclosed...http://www.google.es/patents/US6900758?utm_source=gb-gplus-sharePatente US6900758 - System, method, apparatus and means for constructing building tomography and timing information
System, method, apparatus and means for constructing building tomography and ...
