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1. WO2020191978 - SAR IMAGING METHOD AND IMAGING SYSTEM THEREOF

Publication Number WO/2020/191978
Publication Date 01.10.2020
International Application No. PCT/CN2019/098636
International Filing Date 31.07.2019
IPC
G01S 13/90 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
88Radar or analogous systems, specially adapted for specific applications
89for mapping or imaging
90using synthetic aperture techniques
G01S 13/58 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
50Systems of measurement based on relative movement of target
58Velocity or trajectory determination systems; Sense-of-movement determination systems
CPC
G01S 13/58
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
50Systems of measurement based on relative movement of target
58Velocity or trajectory determination systems; Sense-of-movement determination systems
G01S 13/90
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
88Radar or analogous systems specially adapted for specific applications
89for mapping or imaging
90using synthetic aperture techniques ; , e.g. synthetic aperture radar [SAR] techniques
G01S 13/9017
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
88Radar or analogous systems specially adapted for specific applications
89for mapping or imaging
90using synthetic aperture techniques ; , e.g. synthetic aperture radar [SAR] techniques
9004SAR image acquisition techniques
9017with time domain processing of the SAR signals in azimuth
Applicants
  • 惠州市德赛西威汽车电子股份有限公司 HUIZHOU DESAY SV AUTOMOTIVE CO., LTD. [CN]/[CN]
Inventors
  • 汤新宜 TANG, Xinyi
  • 阮洪宁 RUAN, Hongning
  • 伍小军 WU, Xiaojun
Agents
  • 广州粤高专利商标代理有限公司 YOGO PATENT & TRADE MARK AGENCY LIMITED COMPANY
Priority Data
201910229770.626.03.2019CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) SAR IMAGING METHOD AND IMAGING SYSTEM THEREOF
(FR) PROCÉDÉ D'IMAGERIE SAR ET SYSTÈME D'IMAGERIE ASSOCIÉ
(ZH) SAR成像方法及其成像系统
Abstract
(EN)
An SAR imaging method, comprising: acquiring an estimated position and speed of a target object, and sending an SAR detection signal and receiving same (101); acquiring, according to the estimated position and speed of the target object, parameters of the relative motion between the target object and a detection radar in at least two continuous moments, the parameters of the relative motion at least comprising a relative speed between the target object and the detection radar (102); determining matched focusing parameters according to the parameters of relative motion, the focusing parameters being associated with the relative speed (103); and according to the received SAR detection signal, performing image focusing according to the focusing parameters when performing the SAR imaging, so as to obtain a focused SAR image (104). The present invention also relates to an SAR imaging system and a storage medium.
(FR)
L'invention concerne un procédé d'imagerie SAR comprenant : l'acquisition d'une position et d'une vitesse estimées d'un objet cible, et l'envoi d'un signal de détection SAR et la réception de ce dernier (101); l'acquisition, en fonction de la position et de la vitesse estimées de l'objet cible, de paramètres du mouvement relatif entre l'objet cible et un radar de détection dans au moins deux moments continus, les paramètres du mouvement relatif comprenant au moins une vitesse relative entre l'objet cible et le radar de détection (102); la détermination de paramètres de focalisation appariés en fonction des paramètres de mouvement relatif, les paramètres de focalisation étant associés à la vitesse relative (103); et en fonction du signal de détection SAR reçu, la réalisation d'une focalisation d'image en fonction des paramètres de focalisation lors de la réalisation de l'imagerie SAR, de façon à obtenir une image SAR focalisée (104). La présente invention concerne également un système d'imagerie SAR et un support d'informations.
(ZH)
一种SAR成像方法,包括:获取目标物体的预估位置和速度,发送并接收SAR探测信号(101);根据目标物体的预估位置和速度,获取至少两个连续时刻中目标物体与探测雷达之间的相对运动参数,相对运动参数至少包括目标物体与探测雷达之间的相对速度(102);根据相对运动参数确定相匹配的聚焦参数,聚焦参数与相对速度相关联(103);根据所接收的SAR探测信号,在进行SAR成像时根据聚焦参数进行图像聚焦,获得聚焦后的SAR图像(104)。还涉及一种SAR成像系统及存储介质。
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