Title:
DIRECTION-OF-ARRIVAL ESTIMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/030857
Kind Code:
A1
Abstract:
This direction-of-arrival estimation device (1) comprises: a correlation matrix generation unit (31) for generating a correlation matrix on the basis of M reception signals respectively obtained from the outputs of a plurality of antenna elements (201-20M), a Σ weight calculation unit (33) for calculating M Σ weights corresponding to the M reception signals using the correlation matrix, a Δ weight calculation unit (34) for calculating M Δ weights by executing a power minimization method using the M Σ weights and two constraint conditions, a Σ beam generation unit (41) for generating a Σ beam using the M Σ weights, a Δ beam generation unit (42) for generating a Δ beam using the M Δ weights, a monopulse ratio calculation unit (43) for calculating the ratio between the Σ beam and Δ beam as a monopulse ratio, and a measured angle calculation unit (44) for calculating an estimated arrival angle value by comparing the monopulse ratio with a reference discrimination curve defining the relationship between the ratio between the Σ beam and Δ beam and the arrival angle.
Inventors:
FUKUSHIMA HIROFUMI (JP)
TAKAHASHI RYUHEI (JP)
SUZUKI NOBUHIRO (JP)
TAKAHASHI RYUHEI (JP)
SUZUKI NOBUHIRO (JP)
Application Number:
PCT/JP2017/028935
Publication Date:
February 14, 2019
Filing Date:
August 09, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01S3/46
Foreign References:
| JP2013174498A | 2013-09-05 | |||
| US5600326A | 1997-02-04 | |||
| US20020169578A1 | 2002-11-14 |
Other References:
YU , KAI-BOR ET AL.: "Adaptive Digital Beamforming for Angle Estimation in Jamming", IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, vol. 37, no. 2, April 2001 (2001-04-01), pages 508 - 523, XP031461522
FANTE, RONALD L.: "Synthesis of Adaptive Monopulse Patterns", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 47, no. 5, May 1999 (1999-05-01), pages 773 - 774, XP011003534
RAO, CAN ET AL.: "Monopulse Estimation with Multipoint Constrained Adaptation in Mainlobe Jamming", PROCEEDINGS OF 2011 IEEE CIE INTERNATIONAL CONFERENCE ON RADAR, vol. 2, 24 October 2011 (2011-10-24), XP032124041
TAKAHASHI R., ET . AL.: "Optimization of monopulse angle accuracy based on cramer-rao lover bound", IEICE TECHNICAL REPORT, vol. 112, no. 439, 14 February 2013 (2013-02-14), pages 43 - 48
FANTE, RONALD L.: "Synthesis of Adaptive Monopulse Patterns", IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol. 47, no. 5, May 1999 (1999-05-01), pages 773 - 774, XP011003534
RAO, CAN ET AL.: "Monopulse Estimation with Multipoint Constrained Adaptation in Mainlobe Jamming", PROCEEDINGS OF 2011 IEEE CIE INTERNATIONAL CONFERENCE ON RADAR, vol. 2, 24 October 2011 (2011-10-24), XP032124041
TAKAHASHI R., ET . AL.: "Optimization of monopulse angle accuracy based on cramer-rao lover bound", IEICE TECHNICAL REPORT, vol. 112, no. 439, 14 February 2013 (2013-02-14), pages 43 - 48
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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