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:
Nov. 27, 2007
Filed:
Jul. 27, 2005
Kanako Honda, Kobe, JP;
Masao Nakano, Yokohama, JP;
Kanako Honda, Kobe, JP;
Masao Nakano, Yokohama, JP;
Fujitsu Ten Limited, Kobe, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In an FM-CW radar apparatus which determines the azimuth to a target by a phase monopulse technique, an abnormal value resulting from the presence of multiple targets is detected. Three receiving antennas are arranged at spacings of 5λ/4 and 6λ/4, respectively, and it is determined whether the difference between the azimuth obtained from the combination of the receiving antennas spaced 5λ/4 apart and the azimuth obtained from the combination of the receiving antennas spaced 6λ/4 apart is smaller than a predetermined value or not; when the condition has been satisfied n times in succession, it is determined that the detected value is normal. On the other hand, if the condition has not been satisfied n times in succession, or if the difference is not smaller than the predetermined value, it is determined that the detected value is an abnormal value resulting from the presence of multiple targets.