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. 13, 2018
Filed:
Apr. 02, 2015
Applicant:
Raytheon Company, Waltham, MA (US);
Inventors:
Kaichiang Chang, Northborough, MA (US);
Yong Liu, Acton, MA (US);
David R. Schmidt, Stow, MA (US);
Stephen M. Sparagna, Milton, MA (US);
Frederic C. Stevens, IV, Milford, MA (US);
Assignee:
Raytheon Company, Waltham, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 13/72 (2006.01); G01S 13/44 (2006.01); H01Q 25/02 (2006.01); H01Q 21/06 (2006.01); G01S 7/03 (2006.01); G01S 13/02 (2006.01);
U.S. Cl.
CPC ...
G01S 13/72 (2013.01); G01S 7/03 (2013.01); G01S 13/4463 (2013.01); H01Q 21/061 (2013.01); H01Q 25/02 (2013.01); G01S 2013/0254 (2013.01);
Abstract
A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.