EP2545613A1 - Système d'antenne, dispositif de radar et procédé de radar avec une couverture de 360 degrés - Google Patents

Système d'antenne, dispositif de radar et procédé de radar avec une couverture de 360 degrés

Info

Publication number
EP2545613A1
EP2545613A1 EP11708351A EP11708351A EP2545613A1 EP 2545613 A1 EP2545613 A1 EP 2545613A1 EP 11708351 A EP11708351 A EP 11708351A EP 11708351 A EP11708351 A EP 11708351A EP 2545613 A1 EP2545613 A1 EP 2545613A1
Authority
EP
European Patent Office
Prior art keywords
antennas
positions
reception
polygon
transmission
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.)
Granted
Application number
EP11708351A
Other languages
German (de)
English (en)
Other versions
EP2545613B1 (fr
Inventor
Peter Hoogeboom
Francesco Belfiori
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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 Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO filed Critical Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Priority to EP11708351.9A priority Critical patent/EP2545613B1/fr
Publication of EP2545613A1 publication Critical patent/EP2545613A1/fr
Application granted granted Critical
Publication of EP2545613B1 publication Critical patent/EP2545613B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • 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

Definitions

  • WO2007/082335 explains that this arrangement can be used to simulate a much larger array with one transmission antenna and a plurality of reception antennas.
  • a synthetic aperture radar wherein reflections are measured by transmission-reception measurements at a series of positions an antenna pattern can be realized with a main lobe in a selectable direction.
  • a synthetic aperture radar is realized by moving a single antenna successively to different positions to obtain the measurements, or by using respective antennas at different positions for both transmission and reception.
  • reflection values can be obtained that each correspond to a virtual measurement of transmission and reception with an antenna positioned midway between the positions of a transmission and reception antenna. These reflection values can be used according to synthetic aperture radar techniques.
  • the diameter of the virtual phased array is about half that of the actual array of reception antennas. This has the effect that the angular resolution of the antenna pattern is coarser than that of a phased array with antennas at the locations of the reception antennas in the actual array.
  • Control and signal processing circuit 29 causes measurements of coefficients S(m,n) to be performed for each of the reception antennas 12 in the groups adjacent the active transmission antenna 10. This is repeated for all of the transmission antennas 10.
  • coefficients for virtual antennas at a plurality of positions p(m,n) are notionally obtained.
  • weight factors w(d,m,n) may be selected as phase vectors exp( -2*i*k'*p(m,n)), where k' is a wavevector in the direction d, but there is considerable freedom in the selection of the weight factors w(d,m,n).
  • weight factors for certain combinations of transmission and reception antennas may be made zero. For example only weight factors for pairs in a sector of the circle that faces the direction d are non zero.
  • the amplitude of the weight factors may be different for different pairs.
  • An optimization algorithm may be used to select the values of the weight factors. Such optimization algorithms are known from the field of synthetic aperture radar.
  • the antennas may be arranged on a three dimensional sphere, with the transmission antennas 10 at the corners of a three dimensional polygon.
  • Regular polygons a tetraeder, cube, pentaheder, octaheder, dodecaheder or regular twenty plane
  • the reception antennas 12 may be located on the ribs between corners, or planes between corners.

Landscapes

  • Radar Systems Or Details Thereof (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention porte sur un système d'antenne ayant un certain nombre d'antennes d'émission (10) disposées à des positions respectives à des coins d'un polygone. Une pluralité de groupes (14a-f) d'antennes de réception (12) sont prévus, chacun à des positions entre les positions des antennes d'émission à des paires respectives de coins voisins du polygone. Une cible réfléchit les signaux issus des antennes d'émission (10). Les réflexions des signaux de chacune des antennes d'émission sont reçues dans les antennes de réception (12). Un signal de sortie d'antenne est calculé à partir d'une somme pondérée complexe de réflexions correspondant aux différentes combinaisons d'antennes d'émission et d'antennes de réception.
EP11708351.9A 2010-03-09 2011-03-09 Système d'antenne, dispositif radar et procédé de radar avec une couverture à 360° Not-in-force EP2545613B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11708351.9A EP2545613B1 (fr) 2010-03-09 2011-03-09 Système d'antenne, dispositif radar et procédé de radar avec une couverture à 360°

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10155992A EP2365585A1 (fr) 2010-03-09 2010-03-09 Système d'antenne, dispositif radar et procédé de radar avec une couverture à 360°
PCT/NL2011/050163 WO2011112084A1 (fr) 2010-03-09 2011-03-09 Système d'antenne, dispositif de radar et procédé de radar avec une couverture de 360 degrés
EP11708351.9A EP2545613B1 (fr) 2010-03-09 2011-03-09 Système d'antenne, dispositif radar et procédé de radar avec une couverture à 360°

Publications (2)

Publication Number Publication Date
EP2545613A1 true EP2545613A1 (fr) 2013-01-16
EP2545613B1 EP2545613B1 (fr) 2018-07-18

Family

ID=42272134

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10155992A Withdrawn EP2365585A1 (fr) 2010-03-09 2010-03-09 Système d'antenne, dispositif radar et procédé de radar avec une couverture à 360°
EP11708351.9A Not-in-force EP2545613B1 (fr) 2010-03-09 2011-03-09 Système d'antenne, dispositif radar et procédé de radar avec une couverture à 360°

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10155992A Withdrawn EP2365585A1 (fr) 2010-03-09 2010-03-09 Système d'antenne, dispositif radar et procédé de radar avec une couverture à 360°

Country Status (2)

Country Link
EP (2) EP2365585A1 (fr)
WO (1) WO2011112084A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2840650B1 (fr) * 2013-08-24 2018-12-26 HENSOLDT Sensors GmbH Réseau tridimensionnel d'antennes
CN106549226B (zh) * 2015-09-22 2019-09-03 启碁科技股份有限公司 射频收发系统
TWI583145B (zh) 2015-09-22 2017-05-11 啟碁科技股份有限公司 射頻收發系統
EP3579337A1 (fr) 2018-06-07 2019-12-11 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO Antenne radar destinée à être utilisée dans un véhicule aérien sans pilote miniature
US11579234B2 (en) * 2019-08-02 2023-02-14 Rockwell Collins, Inc. Interferometric direction-finding antenna array with multiplexed/switched radiating elements
CN114325716A (zh) * 2021-12-24 2022-04-12 深圳市道通智能航空技术股份有限公司 一种雷达装置及无人机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2121675A1 (fr) * 1991-11-08 1993-05-13 Asu Ram Jha Antennes terriennes pour systeme de telecommunications par satellite
EP1938421A4 (fr) * 2005-10-17 2010-03-31 Groundprobe Pty Ltd Radar à synthèse d'ouverture à réseau périmétrique
US7994965B2 (en) 2006-01-17 2011-08-09 Teledyne Australia Pty Ltd Surveillance apparatus and method
PL2191292T3 (pl) * 2007-09-19 2019-09-30 Teledyne Australia Pty Ltd Układ i sposób obrazowania

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011112084A1 *

Also Published As

Publication number Publication date
EP2545613B1 (fr) 2018-07-18
EP2365585A1 (fr) 2011-09-14
WO2011112084A1 (fr) 2011-09-15

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