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. 24, 2015
Filed:
Jan. 14, 2011
Applicants:
Jack Gray, Point Pleasant, NJ (US);
Jonathan A. Boardman, Mount Laurel, NJ (US);
Inventors:
Jack Gray, Point Pleasant, NJ (US);
Jonathan A. Boardman, Mount Laurel, NJ (US);
Assignee:
Lockheed Martin Corporation, Bethesda, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 13/00 (2006.01); G01S 5/02 (2010.01); G01S 13/95 (2006.01);
U.S. Cl.
CPC ...
G01S 5/0247 (2013.01); G01S 13/956 (2013.01);
Abstract
There may be situations in which a ship at sea is lost and GPS is not available due to jamming, and neither a position fix nor GPS is available, or the heading and attitude sensors are degraded. A system and method allow estimating a ship's heading and pitch using radar range measurements, multiple antennas and satellite ephemeris data.