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:
Jun. 18, 2013
Filed:
Sep. 10, 2010
Vladimir Volman, Newtown, PA (US);
John B. Stetson, New Hope, PA (US);
Vladimir Volman, Newtown, PA (US);
John B. Stetson, New Hope, PA (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
A radar system comprises an electromagnetic transmitter and an array of antenna elements connected in Multiple-Input Multiple-Output manner for routing signals reflected from the target to a plurality of receive beam rotation processors. The receive beam rotation processing for each antenna element includes application of rotation frequency offsets to the received signals and summation in summing and differencing adders to generate I and Q components of the rotating beams. The I and Q components for each element are summed to generate received signals including angle-or-arrival (AOA) information. The AOA information is further processed by correlating with reference replica AOA signals and by averaging to determine the actual AOA. The transmitter may have multiple contrarotating beams generated by application of frequency offsets. The transmit and receive beam rotations may be synchronized.