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:
Jan. 17, 2017
Filed:
May. 21, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Yuu Watanabe, Toyota, JP;
Koichiro Suzuki, Yokohama, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
In a dual-frequency CW radar apparatus, first/second beat signals that include reflection components of radar waves conforming to transmission signals of first/second frequencies are generated for each antenna element and the generated signals are Fourier transformed. A power spectrum average of the beat signals is used as a basis for the detection of a peak frequency fcorresponding to the frequency of the reflection components. A second eigenvalue λof a correlation matrix: Ry=(½)·[y,y][y,y]is calculated, the matrix being based on first received vector y/second received vector yhaving elements that are Fourier transformed values of the peak frequency f. Based on the magnitude of the eigenvalue λ, whether or not the reflection components corresponding to the peak frequency fare synthetic components of the reflected waves from a plurality of targets is decided.