Title:
ステアリングベクトル推定装置、ステアリングベクトル推定方法およびステアリングベクトル推定プログラム
Document Type and Number:
Japanese Patent JP6652519
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To estimate accurately a steering vector of each object signal.SOLUTION: An observation signal vector calculation unit 10 calculates M observation signal vectors (where M is an integer equal to or greater than 2) which are M-dimensional vectors consisting of time-frequency components of observed signals acquired at different positions respectively in a state where N target signals (where N is an integer equal to or larger than 1) and noise are mixed. A covariance matrix estimating unit 30 estimates N first covariance matrices corresponding to each of the target signals and a second covariance matrix corresponding to noise for each frequency based on the observation signal vector. A generalized eigenvalue analysis unit 40 estimates the steering vector for each of the target signals based on the vector obtained by multiplying the eigenvector corresponding to the maximum eigenvalue of the generalized eigenvalue problem defined by the first covariance matrices and the second covariance matrices by the second covariance matrices.SELECTED DRAWING: Figure 1
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Inventors:
Nobutaka Ito
Tomohiro Nakatani
Akiko Araki
Tomohiro Nakatani
Akiko Araki
Application Number:
JP2017037299A
Publication Date:
February 26, 2020
Filing Date:
February 28, 2017
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G10L21/0208; G10L21/0232
Domestic Patent References:
| JP2010176105A | ||||
| JP200860635A | ||||
| JP201456181A | ||||
| JP2008203474A | ||||
| JP201354258A | ||||
| JP201737269A |
Attorney, Agent or Firm:
Sakai International Patent Office