公开(公告)号：US20220026532A1

公开(公告)日：2022-01-27

申请号：US17490200

申请日：2021-09-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qiang Li ,  Honglei Li ,  Tong Jiang ,  Hongying Wu

IPC: G01S7/48 ,  G01S17/14 ,  G01S7/481 ,  G01S7/4861

Abstract: An echo signal processing method includes receiving echo signals, in different directions, including a first echo signal and a second echo signal, and the first echo signal and the second echo signal are received, determining a first inflection point from the first echo signal, determining a second inflection point from the second echo signal, determining whether a time difference between a first moment at which the first inflection point is received from the first echo signal and a second moment at which the second inflection point is received from the second echo signal is less than a preset threshold, and combining the first echo signal and the second echo signal when the time difference is less than the preset threshold.

公开(公告)号：US20220011414A1

公开(公告)日：2022-01-13

申请号：US17486946

申请日：2021-09-28

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Tong Jiang ,  Qiang Li ,  Hongying Wu ,  Honglei Li ,  Qiang Li

IPC: G01S7/4865 ,  G01S7/481 ,  G01S17/10 ,  G01S17/931

Abstract: A ranging method and apparatus are provided. The method includes processing, by a ranging device, an echo signal of a detection signal based on a time-to-digital conversion ranging manner to determine a first data set. The echo signal is processed based on an analog-to-digital conversion ranging manner to determine a second data set. An output distance set is determined based on at least one parameter in the first data set or the second data set, and one or more of the following relationships: a relationship between at least one of an actual transmit power of the detection signal and a preset power threshold, a relationship between at least one estimated distance and a preset distance threshold, or a relationship between at least one signal parameter of the echo signal and a preset parameter threshold.

公开(公告)号：US12241968B2

公开(公告)日：2025-03-04

申请号：US17845337

申请日：2022-06-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiang Li ,  Hongying Wu

IPC: G01S13/89 ,  G01S7/292 ,  G01S13/931

Abstract: The disclosure provides a radar ranging method and device, a radar, and an in-vehicle system. An example method includes: obtaining a pulse waveform of a transmit signal sent to a target object by a radar; obtaining a sampling sequence of an echo signal received by the radar; determining, in sampling points on a rising edge of the sampling sequence, a first timing point used to indicate a receive moment of the echo signal; determining, based on the first timing point and the pulse waveform of the transmit signal, a second timing point used to indicate a transmit moment of the transmit signal; and calculating a distance between the radar and the target object based on the first timing point and the second timing point.

公开(公告)号：US20240313863A1

公开(公告)日：2024-09-19

申请号：US18658148

申请日：2024-05-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhongyang Xu ,  Shilong Pan ,  Tonghui Liu ,  Fengxi Yu ,  Menglin Li ,  Hongying Wu

IPC: H04B10/50 ,  H04B10/516

CPC classification number: H04B10/504 ,  H04B10/516

Abstract: A signal processing system includes a modulation system and a transmission system. The modulation system is configured to perform first modulation processing on a first subcarrier signal to obtain a second subcarrier signal. The modulation system is further configured to perform second modulation processing on the second subcarrier signal and a first signal light to obtain a transmission signal light. The transmission signal light includes a single-frequency optical carrier signal and an optical sideband signal, and a frequency band of the single-frequency optical carrier signal and a frequency band of the optical sideband signal do not completely overlap. The transmission system is configured to transmit the transmission signal light.

公开(公告)号：US20220026544A1

公开(公告)日：2022-01-27

申请号：US17496999

申请日：2021-10-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hongying Wu ,  Tong Jiang ,  Qiang Li ,  Honglei Li

IPC: G01S7/4865 ,  G01S17/08 ,  G01S7/48

Abstract: A ranging method includes obtaining a first echo signal that is obtained after laser light emitted by a laser to a measured object is reflected by the measured object, determining that the first echo signal is a saturated echo signal, calculating an initial distance using a receiving moment of the first echo signal, determining a target distance compensation value corresponding to a saturation degree of the first echo signal, compensating, using the target distance compensation value and in a distance compensation manner, the initial distance, and setting a distance obtained after compensation as a measured distance between the measured object and the laser.

公开(公告)号：US20220082659A1

公开(公告)日：2022-03-17

申请号：US17456223

申请日：2021-11-23

Applicant: Huawei Technologies Co., Ltd

Inventor： Honglei Li ,  Tong Jiang ,  Qiang Li ,  Hongying Wu

IPC: G01S7/41 ,  G01S13/58

Abstract: A method includes: determining, a first pixel in a receiving field of view of a radar and N sampling point sets in an echo signal corresponding to the first pixel; estimating an estimated distance between the radar and a target object based on each first sampling point set of the N sampling point sets, and determining, based on each estimated distance, M cumulative receiving fields of view in a one-to-one correspondence with M data frames; determining a second sampling point set in echo signals corresponding to Q neighboring pixels, and superposing each first sampling point set and the corresponding second sampling point set to obtain an echo signal that corresponds to the first pixel and that is obtained; and calculating an actual distance between the radar and the target object based on the echo signal obtained after superposition processing.

公开(公告)号：US20220018943A1

公开(公告)日：2022-01-20

申请号：US17489069

申请日：2021-09-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Honglei Li ,  Qiang Li ,  Tong Jiang ,  Hongying Wu

IPC: G01S7/4863 ,  G01S17/10

Abstract: A ranging method includes determining a pixel matrix based on a received echo signal, determining a first amplitude value set based on a first pixel, determining a second pixel based on the first pixel, determining, based on the second pixel, a second amplitude value set based on the second pixel, performing a summation on a target first amplitude value set and a target second amplitude value set, obtaining a target ranging set based on all first amplitude value sets and all second amplitude value sets, and performing a ranging based on the target ranging set to improve a signal-to-noise ratio of an accumulated amplitude value set and a ranging accuracy.