US 12,085,666 B2
Radar device, imaging method, and imaging program
Tatsuya Sumiya, Tokyo (JP); Masayuki Ariyoshi, Tokyo (JP); Kazurnine Ogura, Tokyo (JP); Taichi Tanaka, Tokyo (JP); and Daisuke Ikefuji, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/622,300
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Jun. 28, 2019, PCT No. PCT/JP2019/025791
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/261525, PCT Pub. Date Dec. 30, 2020.
Prior Publication US 2022/0260673 A1, Aug. 18, 2022
Int. Cl. G01S 7/02 (2006.01); G01S 13/32 (2006.01); G01S 13/89 (2006.01)
CPC G01S 7/027 (2021.05) [G01S 13/32 (2013.01); G01S 13/89 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A radar device comprising:
a radar signal transmission and receiving unit which obtains radar signals, based on reflected waves received by a plurality of receiving antennas,
a movement estimation unit which estimates a movement of an object that may appear in a radar image,
a movement discretization unit which discretizes the estimated movement,
a signal dividing unit which divides the radar signals into a plurality of groups,
a Fourier transform processing unit which applies Fourier transform to the radar signals of each of the groups,
a phase-compensation and synthesis processing unit which synthesizes results of the Fourier transform after performing phase compensation corresponding to the movement of the object on the results of the Fourier transform, and
an imaging processing unit which generates the radar image from the synthesized result of the Fourier transform.