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1. WO2020107234 - RADAR SYSTEM AND WAVEFORM GENERATION METHOD

Publication Number WO/2020/107234
Publication Date 04.06.2020
International Application No. PCT/CN2018/117762
International Filing Date 27.11.2018
IPC
G01S 13/34 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
08Systems for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
34using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
CPC
G01S 13/34
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06Systems determining position data of a target
08Systems for measuring distance only
32using transmission of continuous unmodulated waves, amplitude-, frequency- or phase-modulated waves
34using transmission of frequency-modulated waves and the received signal, or a signal derived therefrom, being heterodyned with a locally-generated signal related to the contemporaneous transmitted signal to give a beat-frequency signal
Applicants
  • 华为技术有限公司 HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
Inventors
  • 刘劲楠 LIU, Jinnan
  • 李德建 LI, Dejian
Agents
  • 广州三环专利商标代理有限公司 SCIHEAD IP LAW FIRM
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) RADAR SYSTEM AND WAVEFORM GENERATION METHOD
(FR) SYSTÈME RADAR ET PROCÉDÉ DE GÉNÉRATION DE FORME D'ONDE
(ZH) 雷达系统及波形生成方法
Abstract
(EN)
A radar system (500), comprising a grouping unit (501) which divides multi-transmitting antennas of the radar system (500) into multiple groups of transmitting antennas; and a control unit (502) which controls one transmitting antenna in each group of transmitting antennas to transmit a chirp signal. Chirp signals transmitted by a transmitting antenna i and a transmitting antenna i + 1 which transmit the chirp signals adjacent in time satisfy the following relationships: first, an initial frequency in which the transmitting antenna i + 1 transmits the chirp signal is: a difference value between a cut-off frequency in which the transmitting antenna i transmits the chirp signal plus the initial frequency in which the transmitting antenna i + 1 transmits the chirp signal and the cut-off frequency in which the transmitting antenna i transmits the chirp signal; second, the slopes of waveforms of the chirp signals transmitted by the transmitting antenna i +1 and the transmitting antenna i are the same. Hence, the chirp signal sent on the time Treset is achieved.
(FR)
La présente invention concerne un système radar (500) comprenant une unité de regroupement (501) qui divise les multiples antennes d'émission du système radar (500) en de multiples groupes d'antennes d'émission; et une unité de commande (502) qui commande une antenne d'émission dans chaque groupe d'antennes d'émission afin d'émettre un signal chirp. Les signaux chirp émis par une antenne d'émission i et une antenne d'émission i + 1 qui transmettent des signaux chirp adjacents dans le temps satisfont les relations suivantes : premièrement, une fréquence initiale dans laquelle l'antenne d'émission i + 1 émet le signal chirp est : une valeur de différence entre une fréquence de coupure dans laquelle l'antenne d'émission i émet le signal chirp plus la fréquence initiale dans laquelle l'antenne d'émission i + 1 émet le signal chirp et la fréquence de coupure dans laquelle l'antenne d'émission i émet le signal chirp; deuxièmement, les pentes des formes d'onde des signaux chirp émis par l'antenne d'émission i +1 et l'antenne d'émission i sont identiques. Par conséquent, un signal chirp envoyé sur au temps Treset est obtenu.
(ZH)
一种雷达系统(500),包括分组单元(501)将雷达系统(500)的多发射天线分成多组发射天线;控制单元(502)控制每组发射天线中的一根发射天线发射啁啾信号;其中,发射啁啾信号在时间上相邻的发射天线i和发射天线i+1发射的啁啾信号满足如下关系:第一、发射天线i+1发射啁啾信号的起始频率为:发射天线i发射啁啾信号的截止频率+发射天线i+1发射啁啾信号的起始频率与发射天线i发射啁啾信号的截止频率之间的差值(I);第二、发射天线i+1和发射天线i发射啁啾信号的波形的斜率相同。由此实现了在时间T reset上发送啁啾信号。
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