Global positioning receiver with PN code output
AssigneeAtheros Communications, Inc.
InventorKeith J. Brodie
Life of this patent
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Abstract
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.
Claims13
A Global Positioning System (GPS), comprising:
- a first GPS receiver having
- 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, wherein the PN output is combined with additional data to create a ranging signal and the ranging signal is transmitted by the GPS receiver;
- a plurality of additional GPS receivers to the first GPS receiver;
- wherein transmission of the ranging signal is selectively activated based upon a request from at least one of the additional GPS receivers;
- and
- wherein the first GPS receiver determines a geoposition of the first GPS receiver, and at least one of the plurality GPS receivers receives the geoposition of the first GPS receiver to determine a geoposition of the at least one of the plurality of GPS receivers.
A local ranging system based on the Global Positioning System (GPS), comprising:
- a plurality of GPS receivers, at least one GPS receiver in the plurality of GPS receivers comprising:
- 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 and wherein the PN output is combined with additional data to create a ranging signal;
- and
- wherein a first GPS receiver of the plurality of GPS receivers determines a geoposition of the first GPS receiver, and a second GPS receiver in the plurality of GPS receivers uses at least the geoposition of the first GPS receiver to determine a geoposition of the second GPS receiver.
A method for determining a position of a receiver using Global Positioning System (GPS) signals, comprising:
- determining the position of at least a first GPS receiver using GPS signals;
- transmitting a Pseudo Noise (PN) output from the first GPS receiver;
- determining a range of at least a second GPS receiver to the first GPS receiver using the PN output;
- and
- determining a position of at least the second GPS receiver using at least the position and the range.
Dependencies are inferred from the claim text.