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:
Sep. 17, 2019
Filed:
Apr. 20, 2017
Applicant:
Raytheon Company, Waltham, MA (US);
Inventors:
Ian S. Robinson, Redondo Beach, CA (US);
Bradley A. Flanders, Whittier, CA (US);
Assignee:
Raytheon Company, Waltham, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01S 3/48 (2006.01); G01S 3/46 (2006.01);
U.S. Cl.
CPC ...
G01S 3/48 (2013.01); G01S 3/46 (2013.01);
Abstract
Methods and systems for determining an angle of arrival (AoA) of a RF emitter signal utilizing phase comparisons between pairs of antennas from among two closely spaced antenna elements and a third antenna element fixedly positioned more distant, and a combination of TDOA and PI techniques, to resolve PI ambiguities. Overlapping AoA ambiguity patterns with different angular spacings may be resolved by TDOA techniques. A span of TDOA AoA possibilities is obtained, centered at a solution to a TDOA angle calculation and bounded by a known TDOA measurement error range.