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 8816898 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 26, 2014

Filed:

Apr. 27, 2011
Applicant:

Kazuo Shirakawa, Kawasaki, JP;

Inventor:

Kazuo Shirakawa, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 13/42 (2006.01); G01S 7/40 (2006.01); G01S 13/89 (2006.01);
U.S. Cl.
CPC ...
G01S 13/42 (2013.01); G01S 13/89 (2013.01); G01S 7/40 (2013.01);
Abstract

A radar apparatus includes: an array antenna having antenna elements having function of a transmission antenna and a reception antenna and receiving an echo signal which is a reflection of a probe signal from a target, the probe signal being radiated from the antenna elements; a converter for converting the echo signal to a baseband signal; a signal synthesizing unit which generates a synthesized baseband signal vector on the basis of aperture synthesis of the baseband signal generated from a combination of the antenna elements giving an equal spatial phase; a correction data acquiring unit which acquires correction data on the basis of coefficients of terms of a synthesized array polynomial; a correction processing unit which corrects the synthesized baseband signal vector on the basis of the correction data; and an estimating unit which performs angle estimation on the basis of the synthesized baseband signal vector.


Find Patent Forward Citations

Shirakawa, Kazuo. (2014). Radar apparatus (U.S. Patent No. 8816898). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8816898

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