Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Reexamination Certificate
2007-06-19
2010-12-07
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
Reexamination Certificate
active
07847733
ABSTRACT:
An arriving direction estimating device for estimating the arriving direction of an arriving wave with high accuracy and at high speed by using a sensor array. The arriving direction estimating device comprises a receiving section for generating a baseband signal from the arriving signals received by sensors, a matrix creating section for creating a spatial average covariance matrix R by combining the correlation vector of the baseband signal, a projection matrix creating section for creating a projection matrix Q from the matrix R depending on the number of signals of the arriving signals, a scale matrix creating section for creating a scale matrix S from a partial matrix of the matrix R, and an estimating section for estimating the arriving direction of the arriving wave from the angle distribution or an algebraic equation by using QS−1QHdefined using the projection matrix Q and the scale matrix S.
REFERENCES:
patent: 5854612 (1998-12-01), Kamiya et al.
patent: 6377213 (2002-04-01), Odachi et al.
patent: 6446025 (2002-09-01), Nakamura et al.
patent: 6642888 (2003-11-01), Kishigami et al.
patent: 6836245 (2004-12-01), Kishigami et al.
patent: 7333056 (2008-02-01), Kishigami et al.
patent: 2004/0189523 (2004-09-01), Kishigami et al.
patent: 9-219616 (1997-08-01), None
patent: 10-229307 (1998-08-01), None
patent: 11-133130 (1999-05-01), None
patent: 11-281725 (1999-10-01), None
patent: 11-289213 (1999-10-01), None
patent: 2000-196328 (2000-07-01), None
patent: 2002-243826 (2002-08-01), None
J. Xin, “Computationally Efficient Subspace-Based Method for Direction-of-Arrival Estimation Without Eigendecompostion” IEEE Transactions on Signal Processing vol. 52, No. 4 Apr. 2004, pp. 876-893.
Fujitsu Limited
Hanify & King P.C.
Nguyen Nga X
Tarcza Thomas H
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