公开(公告)号：US11802939B2

公开(公告)日：2023-10-31

申请号：US17331074

申请日：2021-05-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungdo Choi ,  Jong-Sok Kim ,  Young Rae Cho

IPC: G01S7/35 ,  G01S13/536 ,  G01S13/931 ,  G01S13/58

CPC classification number: G01S7/354 ,  G01S7/356 ,  G01S13/536 ,  G01S13/584 ,  G01S13/931

Abstract: A radar signal processing method includes: extracting a first chirp sequence signal of a first carrier frequency and a second chirp sequence signal of a second carrier frequency from a radar signal received through an array antenna in a radar sensor; generating a first range-Doppler map by performing frequency conversion on the first chirp sequence signal; detecting a first target cell corresponding to a first target in the first range-Doppler map; determining a first ambiguous Doppler velocity of the first target based on first frequency information of the first target cell; determining a first range of an unambiguously measurable Doppler velocity through the first chirp sequence signal; estimating second ambiguous Doppler velocities based on the first ambiguous Doppler velocity and the first range; and determining a Doppler velocity of the first target by performing partial frequency conversion on the second chirp sequence signal based on the second ambiguous Doppler velocities.

公开(公告)号：US12298429B2

公开(公告)日：2025-05-13

申请号：US18496145

申请日：2023-10-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sungdo Choi ,  Jong-Sok Kim ,  Young Rae Cho

IPC: G01S7/35 ,  G01S13/536 ,  G01S13/58 ,  G01S13/931

Abstract: A radar signal processing method includes: extracting a first chirp sequence signal of a first carrier frequency and a second chirp sequence signal of a second carrier frequency from a radar signal received through an array antenna in a radar sensor; generating a first range-Doppler map by performing frequency conversion on the first chirp sequence signal; detecting a first target cell corresponding to a first target in the first range-Doppler map; determining a first ambiguous Doppler velocity of the first target based on first frequency information of the first target cell; determining a first range of an unambiguously measurable Doppler velocity through the first chirp sequence signal; estimating second ambiguous Doppler velocities based on the first ambiguous Doppler velocity and the first range; and determining a Doppler velocity of the first target by performing partial frequency conversion on the second chirp sequence signal based on the second ambiguous Doppler velocities.