Radar device and target angle detection method

Details Radar device and target angle detection method Radar device and target angle detection method

2009-01-26

2011-11-08

Gregory, Bernarr (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Determining direction

C342S027000, C342S070000, C342S118000, C342S127000, C342S128000, C342S146000, C342S175000, C342S195000

Reexamination Certificate

active

08054216

ABSTRACT:
A radar device has a plurality of receiving antennas which receive, as a reception wave, a radar wave sent in a predetermined reference direction and reflected by a target; a phase difference detection unit which detects a first phase difference of the reception wave received by a first receiving antenna pair that is spaced by a first gap, and a second phase difference of the reception wave received by a second receiving antenna pair that is spaced by a second gap smaller than the first gap; and an angle detection unit which performs a first process of determining, as a detection angle, an angle of the target relative to the reference direction being a mutually coincident angle from among a plurality of first angles corresponding to the first phase difference and a plurality of second angles corresponding to the second phase difference. The radar device allows expanding an angle detection range without reducing the resolution of the angle corresponding to the second phase difference.

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Japanese Office Action issued in Japanese Patent Application No. 2008-017142, on Jan. 5, 2010, (with English Translation).
Nov. 9, 2010 Office Action issued in Japanese Patent Application No. 2008-017142 with English Translation.

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