公开(公告)号：US20220035019A1

公开(公告)日：2022-02-03

申请号：US17345039

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mu ZHOU ,  Jinnan LIU ,  Chen YANG

IPC: G01S13/58 ,  G01S13/931 ,  G01S13/00

Abstract: Embodiments of this application disclose a signal processing method, a radar system, and a vehicle. The method is applied to a radar system including an array antenna. The method includes: sequentially transmitting signals according to a first transmission sequence through M transmit antennas, where the first transmission sequence is different from a sequence that is formed by arranging the M transmit antennas based on spatial locations; receiving, through N receive antennas, echo signals that are formed after a target reflects the transmitted signals, where M and N are positive integers, and M is greater than 2; and measuring a parameter of the target based on the echo signals. According to the embodiments of this application, correlation between space and a Doppler phase shift is reduced by changing a switching order of transmit antennas.

公开(公告)号：US20220116126A1

公开(公告)日：2022-04-14

申请号：US17558949

申请日：2021-12-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mu ZHOU

IPC: H04B17/14 ,  H04W24/10 ,  H04B7/06

Abstract: A transmission channel calibration apparatus and a wireless communications device are provided, to calibrate a transmission channel in a system. The apparatus includes: a first measured channel, a second measured channel, a first reference channel, and a second reference channel, where the first measured channel and the second measured channel are symmetrically arranged, and the first reference channel and the second reference channel are symmetrically arranged; and a vector detection unit, configured to: when the first measured channel transmits a first signal, perform detection based on a first feedback signal and a second feedback signal that are respectively output by the first reference channel and the second reference channel, to obtain a first signal vector and a second signal vector; and when the second measured channel transmits the first signal, perform detection based on a third feedback signal.

公开(公告)号：US20210218482A1

公开(公告)日：2021-07-15

申请号：US17159411

申请日：2021-01-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mu ZHOU ,  Yi CAO

IPC: H04B17/11 ,  H04B7/06

Abstract: This application provides an apparatus for correcting a deviation between a plurality of transmission channels, which includes a first transmission channel and a second transmission channel. The first transmission channel and the second transmission channel are respectively connected to a first endpoint and a second endpoint of a correction coupling channel. The apparatus includes a vector detection unit, configured to: when a first signal is fed at the first endpoint and a second signal is fed at the second endpoint, respectively detect a plurality of signal vectors based on a plurality of feedback signals of the first transmission channel and the second transmission channel; and a processing unit, configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the detected signal vectors.

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.

公开(公告)号：US20200328828A1

公开(公告)日：2020-10-15

申请号：US16911925

申请日：2020-06-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Mu ZHOU ,  Yi CAO

IPC: H04B17/11 ,  H04B7/06

Abstract: The present disclosure relates to apparatus for correcting a deviation between a plurality of transmission channels, which includes a first transmission channel and a second transmission channel. The first transmission channel and the second transmission channel are respectively connected to a first endpoint and a second endpoint of a correction coupling channel. One example apparatus includes a receiver and at least one processor. The receiver is configured to when a first signal is fed at the first endpoint and a second signal is fed at the second endpoint, respectively detect a plurality of signal vectors based on a plurality of feedback signals of the first transmission channel and the second transmission channel. The at least one processor is configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the detected signal vectors.