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:
May. 26, 1998
Filed:
Sep. 27, 1996
Applicant:
Inventors:
Hiroto Nakatani, Nagoya, JP;
Hiroshi Mizuno, Kariya, JP;
Hiroshi Hazumi, Nagoya, JP;
Akihisa Fujita, Aichi-ken, JP;
Hiroshi Naganawa, Kagamigahara, JP;
Kunihiko Sasaki, Kuwana, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
342 70 ; 342 71 ; 342107 ; 342113 ; 342115 ; 342116 ; 342133 ; 342146 ; 342196 ;
Abstract
Receivers 14 and 16 comprise mixers 14b and 16b for mixing reception signals of receiver antennas 14a and 16a with a transmission signal to generate beat signals B1 and B2, respectively. Signal processing section 20 performs the Fourier transformation of beat signals B1 and B2 supplied from receivers 14 and 16 to obtain the phases of beat signals B1 and B2 and then obtain the azimuth based on the difference of these phases.