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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.:

US 9658321 B1

PDFFull Text
Date of Patent:
May. 23, 2017

Filed:

Dec. 04, 2014

Method and apparatus for reducing noise in a coded aperture radar

Applicant:

Hrl Laboratories Llc, Malibu, CA (US);

Inventor:

Jonathan J. Lynch, Oxnard, CA (US);

Assignee:

HRL Laboratories, LLC, Malibu, CA (US);

Attorney:

Ladas & Parry

Primary Examiner:

Timothy A Brainard

Int. Cl.
CPC ...
G01S 13/34 (2006.01); G01S 7/28 (2006.01); G01S 7/02 (2006.01); G01S 13/02 (2006.01); G01S 13/44 (2006.01); G01S 13/536 (2006.01); G01S 7/35 (2006.01); G01S 13/88 (2006.01); G01S 13/93 (2006.01); G01S 13/94 (2006.01);
U.S. Cl.
CPC ...
G01S 7/2813 (2013.01); G01S 7/02 (2013.01); G01S 13/02 (2013.01); G01S 13/343 (2013.01); G01S 13/4418 (2013.01); G01S 13/4463 (2013.01); G01S 13/536 (2013.01); G01S 13/882 (2013.01); G01S 13/931 (2013.01); G01S 13/94 (2013.01); G01S 2007/356 (2013.01);
Abstract

A method and apparatus for reducing noise in a coded aperture radar system, the coded aperture radar system transmitting signals which occur in sweeps, with K sweeps utilized to cover field of view of the coded aperture radar system and Q frequency shifts or steps occurring each sweep thereof. An array of N antenna elements is provided, the array of antenna elements each having an associated two state modulator coupled therewith. Energy received at the array is modulated according to a sequence of multibit codes, the number of codes in the sequence of codes comprising at least K times Q times N, thereby reducing noise in the coded aperture radar system compared to a coded aperture radar system radar system having fewer than K times Q times N codes in its sequence of multibit codes.

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