公开(公告)号：US20220221570A1

公开(公告)日：2022-07-14

申请号：US17707691

申请日：2022-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jintai ZHU ,  Dejian LI ,  Dapeng LAO ,  Ben WANG

IPC: G01S13/58 ,  G01S13/931 ,  G01S7/41 ,  G01S13/34

Abstract: A velocity ambiguity resolving method and an echo signal processing apparatus are provided. The method includes: calculating, for first echo signals respectively received by at least two receive antennas in the N receive antennas, a first estimate of a direction of arrival formed by the at least two receive antennas and a first target, where the first echo signals are echo signals formed after transmit signals sent by a same transmit antenna in a time division transmit mode are reflected by the first target; separately performing, by using the first estimate, angle compensation on M second echo signals received by a first receive antenna, to obtain M first compensated echo signals; and performing velocity estimation based on at least two first compensated echo signals, to obtain a velocity of the first target.

公开(公告)号：US20220171050A1

公开(公告)日：2022-06-02

申请号：US17675743

申请日：2022-02-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinnan LIU ,  Mu ZHOU ,  Dapeng LAO ,  Chen YANG

IPC: G01S13/58 ,  G01S7/35

Abstract: A signal transmission method and apparatus, a signal processing method and apparatus, and a radar system are provided, so that a MIMO radar can accurately resume a velocity measurement of a target to a velocity measurement range of a SIMO radar. The signal transmission method is applied to a multiple input multiple output (MIMO) radar. A transmitter in the MIMO radar sends a measurement frame used to measure a velocity of a target. The measurement frame includes a first burst. In the first burst, each low-density transmit antenna sends one chirp signal in each timeslot, and at least one high-density transmit antenna sends more chirp signals in additional timeslots.