INCOMING WAVE NUMBER ESTIMATION APPARATUS AND INCOMING WAVE NUMBER INCOMING DIRECTION ESTIMATION APPARATUS

WIPO Patent Application WO/2019/215790

A1

The present invention provides an incoming wave number estimation apparatus that includes a sub-array space averaging unit (102), an eigenvalue expansion unit (103), and a wave number estimation unit (104). The sub-array space averaging unit (102) that divides a received signal of an array antenna (101) into a plurality of sub-arrays having different shapes, calculates a correlation matrix for each sub-array having different shapes, and performs a spatial average of the correlation matrices. The eigenvalue expansion unit (103) performs eigenvalue expansion of the correlation matrix for each of the sub-arrays having different shapes after spatial averaging. The wave number estimation unit (104) estimates the number of incoming waves by integrating the eigenvalues for each of the sub-arrays having different shapes obtained by the eigenvalue expansion unit (103).

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OSHIMA TADASHI (JP)
GODA YUICHI (JP)
SUZUKI NOBUHIRO (JP)

PCT/JP2018/017646

November 14, 2019

May 07, 2018

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MITSUBISHI ELECTRIC CORP (JP)

G01S3/46; G01S7/4914; G01S13/931; G01S13/933

WO2018042484A1	2018-03-08
WO2010125790A1	2010-11-04

JP2005249604A	2005-09-15
US20070164902A1	2007-07-19

TAZAWA, Hideaki et al. (JP)

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