Title:
METHOD AND APPARATUS FOR ESTIMATING DIRECTION OF ARRIVAL OF RADAR RECEIVED SIGNAL USING ANTENNA ARRAY EXTRAPOLATION
Document Type and Number:
WIPO Patent Application WO/2019/216452
Kind Code:
A1
Abstract:
Disclosed is a method for estimating a direction of arrival of a radar received signal by using an antenna array extrapolation. In a ULA antenna in which N actual antennas are spaced at equal intervals d in a line, a transform matrix representing relationships between phases of received signals received by i-th (where i is a natural number of 1 or more) to (N-2+i)th antennas and a phase of a received signal received by (N-1+i)th antenna is obtained. A phase of a virtual received signal received by a new (N+i)th virtual antenna is generated by multiplying the obtained transform matrix by values corresponding to the phases of the received signals received by (i+1)th to (N-1+i)th antennas. A magnitude component of the virtual received signal received by the (N+i)th virtual antenna is obtained by averaging the magnitudes of the received signals received by the i-th to (N-1+i)th antennas. Obtaining the transform matrix, and obtaining the phase component and the magnitude component of the virtual received signal are repeatedly performed while increasing the number of virtual antennas i by one until the number i is equal to a predetermined threshold value (M). A DOA of the radar received signal is calculated by using the obtained virtual received signal and the received signal received from the actual antenna together as inputs to a DOA estimation algorithm.
Inventors:
KIM SEONG-CHEOL (KR)
LEE SEONG-WOOK (KR)
SIM HEON-KYO (KR)
LEE SEONG-WOOK (KR)
SIM HEON-KYO (KR)
Application Number:
PCT/KR2018/005323
Publication Date:
November 14, 2019
Filing Date:
May 09, 2018
Export Citation:
Assignee:
SEOUL NAT UNIV R&DB FOUNDATION (KR)
International Classes:
G01S3/46; G01S13/02; G05D1/02
Foreign References:
| JP2018048978A | 2018-03-29 | |||
| KR101807499B1 | 2017-12-11 | |||
| JP2017227487A | 2017-12-28 | |||
| KR20140057887A | 2014-05-14 | |||
| KR20160088644A | 2016-07-26 |
Attorney, Agent or Firm:
PARK, Young-woo (KR)
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