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:
Feb. 23, 2010
Filed:
Oct. 09, 2007
David W. Meyers, Morristown, NJ (US);
Lawrence C. Vallot, Morristown, NJ (US);
Brian Schipper, Morristown, NJ (US);
Kelly Muldoon, Morristown, NJ (US);
David W. Meyers, Morristown, NJ (US);
Lawrence C. Vallot, Morristown, NJ (US);
Brian Schipper, Morristown, NJ (US);
Kelly Muldoon, Morristown, NJ (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A method and a system for providing a substituted timing signal for a missing satellite ephemeris in execution of a RAIM algorithm includes deriving a plurality of position, velocity, and time solutions from a GPS navigation system. The position, velocity and time solutions are derived from a plurality of satellite ephemerides. An atomic clock provides an atomic clock signal. The atomic clock signal is compared to the derived time solutions to arrive at a correction factor. The atomic clock signal is adjusted according to the correction factor to develop an adjusted atomic clock signal. The adjusted atomic clock signal is substituted for a missing satellite ephemeris to execute the RAIM algorithm.