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:
Mar. 05, 2013
Filed:
Jan. 26, 2011
Hisateru Asanuma, Kobe, JP;
Masahiro Sakaguchi, Kobe, JP;
Tomoya Kawasaki, Toyota, JP;
Motomi Iyoda, Seto, JP;
Hisateru Asanuma, Kobe, JP;
Masahiro Sakaguchi, Kobe, JP;
Tomoya Kawasaki, Toyota, JP;
Motomi Iyoda, Seto, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A reflected wave that a transmitted wave is reflected by targets including a stationary target and a moving target is received as receiving signals of at least two reception antennas. A phase difference between beat signals at respective peak frequencies, generated from a transmitting signal and the receiving signals, is calculated. Directions of the targets are calculated in such a manner that the calculated phase difference of the targets is stored in a storage area in advance, it is predicted whether peak frequencies of the plurality of targets overlap each other, a predicted phase difference of the stationary target at the time when the peak frequencies overlap each other is calculated on the basis of the stored phase difference, and a predicted phase difference of the moving target is calculated on the basis of the calculated phase difference and the predicted phase difference of the stationary target.