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. 22, 2011
Filed:
Nov. 26, 2008
Kazuo Shirakawa, Kawasaki, JP;
Kazuo Shirakawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A direction-of-arrival estimation apparatus has a signal vector generation unit operable to generate a signal vector v composed of N baseband signals vto vfrom arriving signals received from a target by N sensors. The direction-of-arrival estimation apparatus includes a Hankel matrix generation unit operable to preferentially set an order of a column of a matrix at a natural number M where 1≦M and M≦(N−1)/2 and generate an (N−M)×M matrix R, R, R, or Rfrom elements vto vof the signal vector. The direction-of-arrival estimation apparatus also includes an estimation unit operable to generate a matrix R using the matrices R, R, R, or R, divide the matrix R into two submatrices Rand Rby R=[R|R], and estimate a direction of arrival of the arriving signal based on the submatrices Rand R.
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