Title:
RADAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/131601
Kind Code:
A1
Abstract:
The present invention improves the azimuth detection accuracy of a radar device. A radar device 1 that uses a virtual expansion antenna system performs, by a DSP 108, a calibration process on first reception information based on a reception signal received through an existing reception antenna 110a, 110b, and performs virtual expansion process for virtually expanding the reception antenna 110a, 110b with respect to the first reception information on which the calibration process has been performed, to convert the first reception information into second reception information based on the virtual expansion antenna system. Then, the radar device estimates the incoming direction of the reception signal on the basis of the second reception information.
Inventors:
KURODA HIROSHI (JP)
TAKEDA SHIGEKI (JP)
UMEHIRA MASAHIRO (JP)
TAKEDA SHIGEKI (JP)
UMEHIRA MASAHIRO (JP)
Application Number:
PCT/JP2020/045180
Publication Date:
July 01, 2021
Filing Date:
December 04, 2020
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
G01S7/02; G01S3/46; G01S13/34; H01Q3/26; H01Q21/08
Foreign References:
| JP2005257298A | 2005-09-22 | |||
| JP2017090229A | 2017-05-25 |
Other References:
KANG, SEOKHYUN ET AL.: "Improving the Performance of DOA Estimation Using Virtual Antenna in Automotive Radar", IEICE TRANSACTIONS ON COMMUNICATIONS, vol. E100-B, no. 5, May 2017 (2017-05-01), pages 771 - 778, DOI: 10.1587/transcom.2016EBP3368 4
YAMADA, HIROYOSHI: "Array Calibration Technique for High-Resolution Direction of Arrival Estimation", THE IEICE TRANSACTIONS ON COMMUNICATIONS B, vol. J92-B, no. 9, 1 September 2009 (2009-09-01), pages 1308 - 1321
YAMADA, HIROYOSHI: "Array Calibration Technique for High-Resolution Direction of Arrival Estimation", THE IEICE TRANSACTIONS ON COMMUNICATIONS B, vol. J92-B, no. 9, 1 September 2009 (2009-09-01), pages 1308 - 1321
Attorney, Agent or Firm:
TODA Yuji (JP)
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