Title:
METHODS AND APPARATUS FOR VELOCITY DETECTION IN MIMO RADAR INCLUDING VELOCITY AMBIGUITY RESOLUTION
Document Type and Number:
WIPO Patent Application WO/2018/071077
Kind Code:
A3
Abstract:
In described examples, a method (800) determines whether a velocity of an object detected by a radar is greater than a maximum velocity by receiving on a plurality of receivers at least one frame of chirps transmitted by at least two transmitters and reflected off of the object. A velocity induced phase shift (φd) in a virtual array vector S of signals received by each receiver corresponding to a sequence of chirps (frame) transmitted by each transmitter is estimated (804). Phases of each element of virtual array vector S are corrected using φd to generate a corrected virtual array vector Sc (805). A first Fourier transform (806) is performed on the corrected virtual array vector Sc to generate a corrected virtual array spectrum. The corrected virtual array spectrum is analyzed to detect a signature (808) that indicates that the object has an absolute velocity greater than a maximum velocity.
Inventors:
RAO SANDEEP (IN)
SUBBURAJ KARTHIK (IN)
WANG DAN (US)
AHMAD ADEEL (US)
SUBBURAJ KARTHIK (IN)
WANG DAN (US)
AHMAD ADEEL (US)
Application Number:
PCT/US2017/041366
Publication Date:
May 24, 2018
Filing Date:
July 10, 2017
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
TEXAS INSTRUMENTS JAPAN LTD (JP)
International Classes:
G01S13/58; G01S13/93
Foreign References:
| US20160131752A1 | 2016-05-12 | |||
| RU2326402C1 | 2008-06-10 | |||
| US20120001791A1 | 2012-01-05 | |||
| US6147638A | 2000-11-14 |
Other References:
See also references of EP 3482222A4
Attorney, Agent or Firm:
DAVIS, Michael, A., Jr. et al. (US)
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