The Boeing Company

Theboeing Company

Anne T Haddad

David Arthur Whelan

Gregory M Gutt

Robert W Brumley

Christopher J Martens

Barton G Ferrell

Michael Eglington

Rachel Rané Schmalzried

Rachel R Schmalzried

Christoper J Martens

A method and system are disclosed for providing an estimate of a location of a user receiver device. The method and system involve emitting from at least one vehicle at least one spot beam on Earth, and receiving with the user receiver device a signal from at least one spot beam. In one or more embodiments, at least one vehicle may be a satellite and/or a pseudolite. The method and system further involve calculating with the user receiver device the estimate of the location of the user receiver device according to the user receiver device's location within at least one spot beam. In some embodiments, when the user receiver device receives signals from at least two spot beams, the user receiver device calculates the estimate of the location of the user receiver device to be located in the center of the intersection of at least two spot beams.

Geolocation leveraging spot beam overlap

Various techniques are provided for calibrating a frequency of a local clock using a satellite signal. In one example, a method of transferring frequency stability from a satellite to a device includes receiving a signal from the satellite. The method also includes determining a code phase from the satellite signal. The method further includes receiving aiding information. In addition, the method includes calibrating a frequency of a local clock of the device using the code phase and the aiding information to substantially synchronize the local clock frequency with a satellite clock frequency.

Local clock frequency calibration using low earth orbit (LEO) satellites

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Berwyn, PA, United States of America

Anne T Haddad