US Patent 7746274 Global positioning receiver with PN code output

A local ranging system for use with GPS receivers and GPS enabled devices. A device in accordance with the present invention comprises a Radio Frequency (RF) section, the RF section adaptable to receive at least one GPS signal from at least one GPS satellite, and a baseband section, coupled to the RF section, wherein the baseband section performs calculations to determine a geoposition of the GPS receiver based on the at least one GPS signal, wherein the baseband section further comprises a Pseudo Noise (PN) output.