US 11,841,456 B2
Radar apparatus and radar signal processing method
Yong Jae Kim, Seoul (KR)
Assigned to SMART RADAR SYSTEM, INC., Seongnam-si (KR)
Filed by SMART RADAR SYSTEM, INC., Seongnam-si (KR)
Filed on Oct. 24, 2021, as Appl. No. 17/508,997.
Application 17/508,997 is a continuation of application No. 16/373,636, filed on Apr. 3, 2019, granted, now 11,187,785.
Claims priority of application No. 10-2019-0002485 (KR), filed on Jan. 8, 2019.
Prior Publication US 2022/0043109 A1, Feb. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01S 7/35 (2006.01); G01S 13/58 (2006.01); G01S 13/72 (2006.01); G01S 13/50 (2006.01); G01S 13/53 (2006.01)
CPC G01S 7/352 (2013.01) [G01S 13/50 (2013.01); G01S 13/53 (2013.01); G01S 13/584 (2013.01); G01S 13/726 (2013.01); G01S 7/356 (2021.05)] 18 Claims
OG exemplary drawing
 
1. A radar apparatus comprising:
an antenna arrangement including a plurality of transmitting antennas and a plurality of receiving antennas, at least one kind of which are non-uniformly and linearly deployed;
a sensor signal processor including a range and Doppler processor configured to calculate range-Doppler data for each of virtual antennas from signals input through the plurality of receiving antennas while sequentially driving the plurality of transmitting antennas; and
a target position calculator configured to calculate position data of a target from arrangement mapped data obtained by rearranging the range-Doppler data calculated by the sensor signal processor according to a two-dimensional arrangement of the virtual antennas,
wherein the target position calculator includes:
a data access controller configured to rearrange the range-Doppler data of the targets into target-specific arrangement mapped data according to a two-dimensional spatial arrangement of the virtual antennas and output the target-specific arrangement mapped data; and
an angular position calculator configured to calculate angular positions of the targets from the target-specific arrangement mapped data.