US 12,411,207 B2
Method and apparatus with radar signal processing
Sungdo Choi, Suwon-si (KR); Young Rae Cho, Suwon-si (KR); and Hyunwoong Cho, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Sep. 8, 2022, as Appl. No. 17/940,334.
Claims priority of application No. 10-2021-0192883 (KR), filed on Dec. 30, 2021.
Prior Publication US 2023/0213614 A1, Jul. 6, 2023
Int. Cl. G01S 7/35 (2006.01); G01S 7/41 (2006.01); G01S 13/58 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/354 (2013.01) [G01S 7/356 (2021.05); G01S 7/415 (2013.01); G01S 13/584 (2013.01); G01S 13/931 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting, through transmission antenna elements of a radar sensor, a radar signal at a transmission time interval corresponding to a time division multiplexing (TDM) latency, wherein the radar signal is for a TDM-based multiple-input multiple-output (MIMO) radar system comprising the radar sensor;
receiving a reflected signal of the radar signal through reception antenna elements of the radar sensor;
determining directions of arrival (DOAs) respectively corresponding to the transmission antenna elements by classifying radar data corresponding to the reflected signal, wherein the classifying is based on the transmission time interval;
determining an unambiguous element of a phase error element by applying an ambiguous Doppler velocity that is based on the radar data to the phase error element of the individual DOA data; and
determining integrated DOA data corresponding to the transmission antenna elements by integrating the individual DOA data by suppressing an ambiguous element of the phase error element.