The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2012
Filed:
Feb. 06, 2009
David A. Whelan, New Port Coast, CA (US);
Clark E. Cohen, Washington, DC (US);
Greg M. Gutt, Leesburg, VA (US);
Barton G. Ferrell, Troy, IL (US);
David A. Whelan, New Port Coast, CA (US);
Clark E. Cohen, Washington, DC (US);
Greg M. Gutt, Leesburg, VA (US);
Barton G. Ferrell, Troy, IL (US);
The Boeing Company, Chicago, IL (US);
Abstract
A method for estimating a precise position of a user device from signals from a low earth orbit (LEO) satellite includes receiving at least one carrier signal at a user device, each carrier signal being transmitted a distinct LEO satellite. The user device processes the carrier signals to obtain a first carrier phase information. The user device recalls an inertial position fix derived at an inertial reference unit. The user device derives a position of the user device based on the inertial position fix and the first carrier phase information.