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FR3116127B1 - Système radar d'imagerie à entrées et sorties multiples de type MIMO. - Google Patents

Système radar d'imagerie à entrées et sorties multiples de type MIMO. Download PDF

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Publication number
FR3116127B1
FR3116127B1 FR2011577A FR2011577A FR3116127B1 FR 3116127 B1 FR3116127 B1 FR 3116127B1 FR 2011577 A FR2011577 A FR 2011577A FR 2011577 A FR2011577 A FR 2011577A FR 3116127 B1 FR3116127 B1 FR 3116127B1
Authority
FR
France
Prior art keywords
radiating element
radiating
elements
radar system
pointing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR2011577A
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English (en)
Other versions
FR3116127A1 (fr
Inventor
Yoan Veyrac
Pascal Cornic
Gall Renan Le
De La Hautiere Gonzague Bertin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thales SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thales SA filed Critical Thales SA
Priority to FR2011577A priority Critical patent/FR3116127B1/fr
Priority to CN202111332761.3A priority patent/CN114488136A/zh
Priority to US17/525,851 priority patent/US12204012B2/en
Publication of FR3116127A1 publication Critical patent/FR3116127A1/fr
Application granted granted Critical
Publication of FR3116127B1 publication Critical patent/FR3116127B1/fr
Active legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G01S13/426—Scanning radar, e.g. 3D radar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control
    • G01S13/913—Radar or analogous systems specially adapted for specific applications for traffic control for landing purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • G01S13/878—Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4004—Means for monitoring or calibrating of parts of a radar system
    • G01S7/4026—Antenna boresight
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO 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
    • G01S13/00—Systems 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S2013/0236—Special technical features
    • G01S2013/0245—Radar with phased array antenna
    • G01S2013/0263—Passive array antenna
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L’invention se rapporte à un système radar d’imagerie à entrées et sorties multiples de type MIMO, comprenant : - des voies d’émission (Ve1, VeM,) ; - des voies de réception (Vr1, VrN) ; - des éléments rayonnants (ERe1, EReM, ERr1, ERrN) colocalisés formant un réseau antennaire en deux dimensions, chaque élément rayonnant (ERe1, EReM, ERr1, ERrN) ayant un domaine de couverture instantané prédéfini ; chaque élément rayonnant étant formé par une pluralité de p sous-éléments rayonnants (SeElt1, SsEltp) répartis selon au moins une des deux dimensions du réseau antennaire, le radar comprenant une pluralité de modules de dépointage électronique (MDe1, …, MDrN), chaque module de dépointage électronique étant connecté à un élément rayonnant, chaque module de dépointage étant configuré pour appliquer une commande de dépointage (Cmd) entre tous les sous-éléments rayonnants (SeElt1, SsEltp) d’un même élément rayonnant, la commande de dépointage (Cmd) étant identique d’un élément rayonnant à l’autre, de façon à déplacer le domaine de couverture de chaque élément rayonnant dans une même direction. Figure pour l’abrégé : Fig. 3
FR2011577A 2020-11-12 2020-11-12 Système radar d'imagerie à entrées et sorties multiples de type MIMO. Active FR3116127B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR2011577A FR3116127B1 (fr) 2020-11-12 2020-11-12 Système radar d'imagerie à entrées et sorties multiples de type MIMO.
CN202111332761.3A CN114488136A (zh) 2020-11-12 2021-11-11 多输入多输出成像雷达系统
US17/525,851 US12204012B2 (en) 2020-11-12 2021-11-12 Multiple-input multiple-output imaging radar system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2011577A FR3116127B1 (fr) 2020-11-12 2020-11-12 Système radar d'imagerie à entrées et sorties multiples de type MIMO.
FR2011577 2020-11-12

Publications (2)

Publication Number Publication Date
FR3116127A1 FR3116127A1 (fr) 2022-05-13
FR3116127B1 true FR3116127B1 (fr) 2022-11-11

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FR2011577A Active FR3116127B1 (fr) 2020-11-12 2020-11-12 Système radar d'imagerie à entrées et sorties multiples de type MIMO.

Country Status (3)

Country Link
US (1) US12204012B2 (fr)
CN (1) CN114488136A (fr)
FR (1) FR3116127B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3140676B1 (fr) * 2022-10-05 2024-09-06 Thales Sa Système de vision de vol (EFVS) pour un aéronef, comprenant un radar millimétrique (RDRMM)

Family Cites Families (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7038620B1 (en) * 1984-02-03 2006-05-02 Northrop Grumman Corporation Warped plane phased array monopulse radar antenna
US4849763A (en) * 1987-04-23 1989-07-18 Hughes Aircraft Company Low sidelobe phased array antenna using identical solid state modules
US4931803A (en) * 1988-03-31 1990-06-05 The United States Of America As Represented By The Secretary Of The Army Electronically steered phased array radar antenna
US5592178A (en) * 1994-06-01 1997-01-07 Raytheon Company Wideband interference suppressor in a phased array radar
US5572219A (en) * 1995-07-07 1996-11-05 General Electric Company Method and apparatus for remotely calibrating a phased array system used for satellite communication
US5771016A (en) * 1997-12-05 1998-06-23 The United States Of America As Represented By The Secretary Of The Army Phased array radar with simultaneous beam-steering and single-sideband modulation
FR2807841B1 (fr) * 2000-04-18 2003-10-03 Thomson Csf Radar a imagerie bas cout a haute resolution
EP1730838A1 (fr) * 2004-03-31 2006-12-13 Xcom Wireless, Inc. Dephaseur numerique et analogique hybride a commande electronique
US7522095B1 (en) * 2005-07-15 2009-04-21 Lockheed Martin Corporation Polygonal cylinder array antenna
US7511665B2 (en) * 2005-12-20 2009-03-31 The United States Of America As Represented By The Secretary Of The Air Force Method and apparatus for a frequency diverse array
US7728772B2 (en) * 2006-06-09 2010-06-01 The Regents Of The University Of Michigan Phased array systems and phased array front-end devices
US8502744B2 (en) * 2008-09-16 2013-08-06 Honeywell International Inc. Scanning antenna
FR2950148B1 (fr) * 2009-09-15 2012-06-15 Thales Sa Radar aeroporte a large couverture angulaire, notamment pour la fonction de detection et d'evitement d'obstacle
DE102011113015A1 (de) * 2011-09-09 2013-03-14 Astyx Gmbh Abbildender Radarsensor mit synthetischer Vergrößerung der Antennenaperatur und zweidimensionaler Strahlschwenkung
US9124361B2 (en) * 2011-10-06 2015-09-01 Raytheon Company Scalable, analog monopulse network
US9972917B2 (en) * 2013-10-03 2018-05-15 Honeywell International Inc. Digital active array radar
US9897695B2 (en) * 2013-10-03 2018-02-20 Honeywell International Inc. Digital active array radar
US9541639B2 (en) * 2014-03-05 2017-01-10 Delphi Technologies, Inc. MIMO antenna with elevation detection
US9791552B1 (en) * 2014-11-19 2017-10-17 Src, Inc. On-site calibration of array antenna systems
US9479232B1 (en) * 2015-08-13 2016-10-25 Sandia Corporation Method of achieving ultra-wideband true-time-delay beam steering for active electronically scanned arrays
US9761939B2 (en) * 2015-08-17 2017-09-12 The Boeing Company Integrated low profile phased array antenna system
US10324166B2 (en) * 2015-09-28 2019-06-18 Rockwell Collins, Inc. Affordable combined pulsed/FMCW radar AESA
US9813969B2 (en) * 2015-11-03 2017-11-07 Telefonaktiebolaget Lm Ericsson (Publ) In-flight cellular communications system coverage of mobile communications equipment located in aircraft
US10254396B2 (en) * 2016-01-20 2019-04-09 The Boeing Company Due regard radar system
US10082570B1 (en) * 2016-02-26 2018-09-25 Waymo Llc Integrated MIMO and SAR radar antenna architecture for self driving cars
US10224629B2 (en) * 2016-05-20 2019-03-05 Rockwell Collins, Inc. Systems and methods for ultra-ultra-wide band AESA
US10854995B2 (en) * 2016-09-02 2020-12-01 Movandi Corporation Wireless transceiver having receive antennas and transmit antennas with orthogonal polarizations in a phased array antenna panel
GB2556620A (en) * 2016-09-27 2018-06-06 Zoneart Networks Ltd Antenna array
FR3056762B1 (fr) * 2016-09-29 2018-09-07 Thales Procede de modulation d'une onde hyperfrequence, systeme d'emission mettant en oeuvre ce procede et radar comportant un tel systeme
CN110168962B (zh) * 2016-10-28 2022-03-11 瑞典爱立信有限公司 空中和基于地面的通信设备之间的无线通信链路
WO2018106720A1 (fr) * 2016-12-05 2018-06-14 Echodyne Corp Sous-système d'antennes à réseau d'émission de direction de faisceau analogique et réseau de réception de formation de faisceau numérique
US10754020B2 (en) * 2017-08-30 2020-08-25 Honeywell International Inc. Mechanically assisted phased array for extended scan limits
US11621486B2 (en) * 2017-09-13 2023-04-04 Metawave Corporation Method and apparatus for an active radiating and feed structure
SE1751148A1 (en) * 2017-09-18 2019-03-19 Icomera Ab Wireless communication system for aircrafts
US10649081B2 (en) * 2017-09-29 2020-05-12 United States of America as represented by the Administrators of NASA Spaceborne synthetic aperture radar system and method
EP3499264B1 (fr) * 2017-12-13 2020-07-01 Nxp B.V. Unité radar et procédé pour raccorder en cascade de circuits intégrés dans une unité radar
EP3517996B1 (fr) * 2018-01-25 2022-09-07 Aptiv Technologies Limited Procédé pour déterminer la position d'un véhicule
KR20200133767A (ko) * 2018-04-19 2020-11-30 메타웨이브 코포레이션 안테나 어레이 소자의 방사 방법 및 장치
US11424548B2 (en) * 2018-05-01 2022-08-23 Metawave Corporation Method and apparatus for a meta-structure antenna array
US11385326B2 (en) * 2018-06-13 2022-07-12 Metawave Corporation Hybrid analog and digital beamforming
DE102018210155A1 (de) * 2018-06-21 2019-12-24 Robert Bosch Gmbh Verfahren und Vorrichtung zur Auswertung von Radarsignalen
US10908254B2 (en) * 2018-12-20 2021-02-02 GM Global Technology Operations LLC Traveling-wave imaging manifold for high resolution radar system
KR102193950B1 (ko) * 2019-01-04 2020-12-22 주식회사 서울로보틱스 센서를 이용하여 획득한 공간 정보를 활용하는 차량 및 센싱 장치, 그리고 이를 위한 서버
KR102746695B1 (ko) * 2019-02-01 2024-12-26 주식회사 에이치엘클레무브 차량용 레이더 센서장치 및 물체 감지방법과 그를 위한 안테나 장치
US11653221B2 (en) * 2020-02-28 2023-05-16 Bae Systems Information And Electronic Systems Integration Inc. Method for control of cognitive LPE radio
US11258167B1 (en) * 2020-09-01 2022-02-22 Rockwell Collins, Inc. Embedded antennas in aerostructures and electrically short conformal antennas
US11995157B2 (en) * 2020-12-04 2024-05-28 Caterpillar Inc. Intelligent LiDAR scanning
US11953617B2 (en) * 2021-03-24 2024-04-09 Rockwell Collins, Inc. Multi-panel multi-function AESA system

Also Published As

Publication number Publication date
FR3116127A1 (fr) 2022-05-13
US12204012B2 (en) 2025-01-21
CN114488136A (zh) 2022-05-13
US20220146657A1 (en) 2022-05-12

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