A low earth orbit (LEO) satellite data uplink is provided. In one embodiment, a method of providing a data uplink to a LEO satellite includes determining position information using a LEO signal received from the LEO satellite, a first ranging signal received from a first ranging source, and a secon
A low earth orbit (LEO) satellite data uplink is provided. In one embodiment, a method of providing a data uplink to a LEO satellite includes determining position information using a LEO signal received from the LEO satellite, a first ranging signal received from a first ranging source, and a second ranging signal received from a second ranging source. The method also includes determining a timing advance parameter using a local clock reference and a LEO satellite clock reference. The method further includes preparing a data uplink signal comprising uplink data to be broadcast to the LEO satellite. In addition, the method includes synchronizing the data uplink signal with the LEO satellite using the timing advance parameter. The method also includes broadcasting the data uplink signal to the LEO satellite.
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We claim: 1. A method of providing a data uplink to a low earth orbit (LEO) satellite, the method comprising: determining position information using a LEO signal received from the LEO satellite, a first ranging signal received from a first ranging source, and a second ranging signal received from a
We claim: 1. A method of providing a data uplink to a low earth orbit (LEO) satellite, the method comprising: determining position information using a LEO signal received from the LEO satellite, a first ranging signal received from a first ranging source, and a second ranging signal received from a second ranging source; determining a timing advance parameter using a local clock reference and a LEO satellite clock reference; preparing a data uplink signal comprising uplink data to be broadcast to the LEO satellite; synchronizing the data uplink signal with the LEO satellite using the timing advance parameter; and broadcasting the data uplink signal to the LEO satellite. 2. The method of claim 1, further comprising decoding a communication signal from the LEO signal to facilitate two-way communication through the LEO satellite using the data uplink signal and the communication signal. 3. The method of claim 2, wherein the decoding comprises averaging a plurality of single bit measurements of the LEO signal. 4. The method of claim 2, wherein the communication signal and the data uplink signal comprise a telephone call. 5. The method of claim 2, further comprising performing a rekeying operation using the communication signal and the data uplink signal. 6. The method of claim 2, further comprising performing an authentication operation using the communication signal and the data uplink signal. 7. The method of claim 2, further comprising performing air traffic management using the communication signal and the data uplink signal. 8. The method of claim 1, wherein the data uplink signal comprises a beam control request. 9. The method of claim 1, wherein the data uplink signal comprises a global distress call. 10. The method of claim 1, wherein the uplink data comprises the position information. 11. The method of claim 1 wherein the uplink data comprises a text message. 12. The method of claim 1, wherein the data uplink signal comprises a plurality of channels, wherein the channels are distributed over a plurality of frequency bands and a plurality of time slots, wherein the preparing comprises: generating a pseudo random noise (PRN) overlay comprising the uplink data; applying the PRN overlay to the channels; and combining the channels to provide the data uplink signal. 13. The method of claim 1, wherein the navigation signal is selected from the group consisting of a military navigation signal, a commercial navigation signal, and a civilian navigation signal. 14. The method of claim 1, wherein the method is performed by a device selected from the group consisting of a handheld navigation device, a vehicle-based navigation device, and an aircraft-based navigation device. 15. The method of claim 1, wherein the LEO satellite clock reference is provided by the LEO signal. 16. The method of claim 1, wherein the LEO satellite is selected from the group consisting of an Iridium satellite and a Globalstar satellite. 17. The method of claim 1, wherein the preparing comprises encoding a single bit of the uplink data in a plurality of bits. 18. A data uplink device comprising: an antenna adapted to: receive a low earth orbit (LEO) signal from a LEO satellite, receive first and second ranging signals from first and second ranging sources, respectively, and broadcast a data uplink signal to the LEO satellite; and a processor adapted to: determine position information using the LEO signal, the first ranging signal, and the second ranging signal, determine a timing advance parameter using a local clock reference and a LEO satellite clock reference, prepare the data uplink signal comprising uplink data to be broadcast to the LEO satellite, and synchronize the data uplink signal with the LEO satellite using the timing advance parameter. 19. The data uplink device of claim 18, wherein the processor is adapted to decode a communication signal from the LEO signal to facilitate two-way communication through the LEO satellite using the data uplink signal and the communication signal. 20. The data uplink device of claim 19, wherein the processor is adapted to average a plurality of single bit measurements of the LEO signal to decode the communication signal. 21. The data uplink device of claim 19, wherein the communication signal and the data uplink signal comprise a telephone call. 22. The data uplink device of claim 19, wherein the processor is configured to perform a rekeying operation using the communication signal and the data uplink signal. 23. The data uplink device of claim 19, wherein the processor is configured to perform an authentication operation using the communication signal and the data uplink signal. 24. The data uplink device of claim 19, wherein the processor is configured to perform air traffic management using the communication signal and the data uplink signal. 25. The data uplink device of claim 18, wherein the data uplink signal comprises a beam control request. 26. The data uplink device of claim 18, wherein the data uplink signal comprises a global distress call. 27. The data uplink device of claim 18, wherein the uplink data comprises the position information. 28. The data uplink device of claim 18, wherein the uplink data comprises a text message. 29. The data uplink device of claim 18, wherein the data uplink signal comprises a plurality of channels, wherein the channels are distributed over a plurality of frequency bands and a plurality of time slots, wherein the processor is adapted to: generate a pseudo random noise (PRN) overlay comprising the uplink data; apply the PRN overlay to the channels; and combine the channels to provide the data uplink signal. 30. The data uplink device of claim 18, wherein the navigation signal is selected from the group consisting of a military navigation signal, a commercial navigation signal, and a civilian navigation signal. 31. The data uplink device of claim 18, wherein the data uplink device is selected from the group consisting of a handheld navigation device, a vehicle-based navigation device, and an aircraft-based navigation device. 32. The data uplink device of claim 18, wherein the LEO satellite clock reference is provided by the LEO signal. 33. The data uplink device of claim 18, wherein the LEO satellite is selected from the group consisting of an Iridium satellite and a Globalstar satellite. 34. The data uplink device of claim 18, wherein the processor is adapted to encode a single bit of the uplink data in a plurality of bits. 35. A data uplink device comprising: means for determining position information using a LEO signal received from the LEO satellite, a first ranging signal received from a first ranging source, and a second ranging signal received from a second ranging source; means for determining a timing advance parameter using a local clock reference and a LEO satellite clock reference; means for preparing a data uplink signal comprising uplink data to be broadcast to the LEO satellite; means for synchronizing the data uplink signal with the LEO satellite using the timing advance parameter; and means for broadcasting the data uplink signal to the LEOsatellite.
Schuchman Leonard (Potomac MD) Bruno Ronald (Arlington VA) Rennard Robert (San Martin CA) Moses Charles (Catonsville MD), Hybrid GPS/data line unit for rapid, precise, and robust position determination.
Garin, Lionel Jacques; Chadha, Kanwar; Turetzky, Gregory Bret; Pande, Ashutosh, Information transfer in a multi-mode global positioning system used with wireless networks.
Olds Keith Andrew (Mesa AZ) Cutler Victor Hawes (Mesa AZ) Tayloe Daniel Richard (Phoenix AZ), Method and apparatus for approximating propagation delay for use in transmission compensation to orbiting satellites.
Bertiger Bary Robert ; Corman David Warren ; Cook Dean Lawrence ; Maine Kristine Patricia ; Warble Keith Vaclav, Method and apparatus for providing duplex communication service in geographical areas where conventional services are o.
Linz Joachim,DEX ; Baumle Regina,DEX, Transmission blocker for mobile radio stations and method for preventing transmission activities of a mobile radio station.
Whelan, David A.; Gutt, Gregory M.; Fyfe, Peter M., Advanced timing and time transfer for satellite constellations using crosslink ranging and an accurate time source.
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Ayyagari, Arun; Aldrich, Timothy M.; Corman, David E.; Gutt, Gregory M.; Whelan, David A., Context aware network security monitoring for threat detection.
Whelan, David A.; Gutt, Gregory M.; Lawrence, David G.; O'Connor, Michael L.; Ayyagari, Arun; Schmalzried, Rachel Rane′, Contextual-based virtual data boundaries.
Gutt, Gregory M.; Ayyagari, Arun; Whelan, David A.; O'Connor, Michael Lee; Lawrence, David G., Differential correction system enhancement leverages roving receivers enabled for a non-GPS, secondary PN and T signal to characterize local errors.
Gutt, Gregory M.; Ayyagari, Arun; Whelan, David A.; Lawrence, David G., Geolocating network nodes in attenuated environments for cyber and network security applications.
Whelan, David A.; Gutt, Gregory M.; Brumley, Robert W.; Eglington, Michael L.; Martens, Christopher J.; Haddad, Anne T.; Schmalzried, Rachel Rané, Geolocation leveraging spot beam overlap.
O'Connor, Michael Lee; Schmalzried, Rachel Rané; Lawrence, David G.; Whelan, David A.; Gutt, Gregory M., Secure routing based on the physical locations of routers.
Harvey, Michael; Malone, Craig; Shankar, Uday; Walgren, Mike; Young, Corwin Walker, System and method for position determination using low earth orbit satellites.
Janky, James M.; Talbot, Nicholas C.; Vollath, Ulrich; Riter, Bruce D., System and method for refining a position estimate of a low earth orbiting satellite.
Janky, James M.; Talbot, Nicholas C.; Vollath, Ulrich; Riter, Bruce D., System and method for refining a position estimate of a low earth orbiting satellite.
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