公开(公告)号：US11994576B2

公开(公告)日：2024-05-28

申请号：US17198785

申请日：2021-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Luzhou Xu ,  Ricky Lap Kei Cheung ,  Hsing Kuo Lo ,  Jianghua Ying ,  Yuan Su

IPC: G01S13/524 ,  G01S13/32 ,  G01S13/58 ,  G01S7/288 ,  G01S13/931

CPC classification number: G01S13/582 ,  G01S13/32 ,  G01S13/524 ,  G01S13/584 ,  G01S7/2883 ,  G01S13/931

Abstract: A radar system transmits pulses towards a target and receives pulses reflected back therefrom. Based on samples (of the received pulses) corresponding to a CPI, a first 2D matrix having a slow-time index and a fast-time index is generated. A slow-time FFT is performed to convert the slow-time index to a Doppler bin index to produce a second 2D matrix having the Doppler bin index and the fast-time index. Thereafter, a 1D interpolation is performed along the Doppler bin index to produce a third 2D matrix having a Velocity bin index and the fast-time index. Thereafter, a fast-time FFT is performed to convert the fast-time index to a Range bin index to produce a fourth 2D matrix having the Velocity bin index and a Range bin index. A distance to and a velocity of a target is determined based on the fourth 2D matrix.

公开(公告)号：US20210215816A1

公开(公告)日：2021-07-15

申请号：US17198785

申请日：2021-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Luzhou Xu ,  Ricky Lap Kei Cheung ,  Hsing Kuo Lo ,  Jianghua Ying ,  Yuan Su

IPC: G01S13/524 ,  G01S13/58 ,  G01S13/32 ,  G01S13/24 ,  G01S7/288

Abstract: A radar system transmits pulses towards a target and receives pulses reflected back therefrom. Based on samples (of the received pulses) corresponding to a CPI, a first 2D matrix having a slow-time index and a fast-time index is generated. A slow-time FFT is performed to convert the slow-time index to a Doppler bin index to produce a second 2D matrix having the Doppler bin index and the fast-time index. Thereafter, a 1D interpolation is performed along the Doppler bin index to produce a third 2D matrix having a Velocity bin index and the fast-time index. Thereafter, a fast-time FFT is performed to convert the fast-time index to a Range bin index to produce a fourth 2D matrix having the Velocity bin index and a Range bin index. A distance to and a velocity of a target is determined based on the fourth 2D matrix.