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A radar ranging method and device

A technology of radar ranging and radar, which is applied in the field of radar ranging methods and devices, and achieves the effects of high precision, high precision, and improved accuracy

Active Publication Date: 2020-06-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the current technology, in order to obtain more accurate positioning results, it is necessary to improve the resolution of the millimeter-wave radar, for example, to increase the number of antenna units or reduce the signal bandwidth of the transmitted signal, how to increase the number of antenna units or reduce the transmission signal bandwidth? In the case of the signal bandwidth of the signal, there is no effective method to improve the accuracy of millimeter wave radar positioning

Method used

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  • A radar ranging method and device

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Embodiment Construction

[0029] The application will be described in further detail below in conjunction with the accompanying drawings.

[0030] Hereinafter, some terms used in this application are explained to facilitate the understanding of those skilled in the art.

[0031] 1) The positioning device may be a handheld device with a wireless connection function, a vehicle-mounted device, and the like. Common positioning devices can be: vehicle radar, mobile phone, tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, such as smart watch, smart bracelet, pedometer, etc.

[0032] 2) The radar module may be a millimeter-wave radar based on a phased array, may be a millimeter-wave radar based on digital beamforming, or may be a millimeter-wave radar based on a single antenna. Each radar module can only transmit signals, only receive signals, or both transmit and receive signals.

[0033] 3) The positioning target can be any target ...

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Abstract

The invention discloses a radar ranging method and device. The method includes the following steps: a first distance and a second distance are determined by positioning equipment, wherein the first distance is the distance between a positioning target and a first radar module, and the second distance is the distance between the positioning target and a second radar module; first imaging information and second imaging information are determined by the positioning equipment, wherein the first imaging information is the imaging information of the positioning target in the first radar module, andthe second imaging information is the imaging information of the positioning target in the second radar module; and the first scale value of the positioning target in the first direction can be determined by the positioning equipment according to a first phase difference value, the first distance, the second distance and a first fixed value, wherein the first fixed value is the distance between the first radar module and the second radar module, and the first phase difference value is the phase difference value between the first imaging information and the second imaging information.

Description

technical field [0001] The present application relates to the technical field of radar positioning, in particular to a radar ranging method and device. Background technique [0002] Millimeter wave radar refers to the radar working in the millimeter wave band, and the working frequency is usually selected in the range of 30-300GHz. The wavelength of the millimeter wave is between the centimeter wave and the light wave, so the millimeter wave has the advantages of microwave guidance and photoelectric guidance. Compared with the centimeter wave seeker, the millimeter wave seeker has the characteristics of small size, light weight and high spatial resolution. Compared with optical seekers such as infrared, laser, and television, the millimeter wave seeker has a strong ability to penetrate fog, smoke, and dust, and has the characteristics of all-weather and all-weather. [0003] Due to its small size and light weight, millimeter-wave radar can well make up for the usage scenar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/32G01S13/58G01S13/08
CPCG01S13/08G01S13/32G01S13/584
Inventor 邵云峰曹彤彤姚骏
Owner HUAWEI TECH CO LTD