FR3078783B1 - Procede de localisation haute resolution d'une cible selon un axe vertical, notamment pour son guidage et radar mettant en oeuvre un tel procede - Google Patents

Procede de localisation haute resolution d'une cible selon un axe vertical, notamment pour son guidage et radar mettant en oeuvre un tel procede Download PDF

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Publication number
FR3078783B1
FR3078783B1 FR1800205A FR1800205A FR3078783B1 FR 3078783 B1 FR3078783 B1 FR 3078783B1 FR 1800205 A FR1800205 A FR 1800205A FR 1800205 A FR1800205 A FR 1800205A FR 3078783 B1 FR3078783 B1 FR 3078783B1
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FR
France
Prior art keywords
detection cycle
replica
sequence
radar
signals
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FR1800205A
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English (en)
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FR3078783A1 (fr
Inventor
Pascal Cornic
Patrick Garrec
Patrick Le Bihan
David Monchaux
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Centre National dEtudes Spatiales CNES
Thales SA
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Centre National dEtudes Spatiales CNES
Thales SA
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Priority to FR1800205A priority Critical patent/FR3078783B1/fr
Publication of FR3078783A1 publication Critical patent/FR3078783A1/fr
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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
    • G01S13/91—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
    • 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
    • G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
    • G01S13/9021—SAR image post-processing techniques
    • G01S13/9029—SAR image post-processing techniques specially adapted for moving target detection within a single SAR image or within multiple SAR images taken at the same time
    • 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
    • G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
    • G01S13/904—SAR modes
    • G01S13/9064—Inverse SAR [ISAR]

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

Le procédé comporte une première phase de traitement dans laquelle on mesure la fréquence Doppler, la distance radiale, la vitesse radiale et l'angle d'élévation de ladite cible à chaque cycle de détection dudit radar, et une deuxième phase de traitement, appliquant le principe de l'antenne synthétique inverse, où de façon itérative : - on génère une suite de signaux synthétiques à partir des fréquences Doppler mesurées à chaque cycle de détection dudit radar, chaque signal étant fonction de l'exponentielle complexe de la variation de phase liée à la fréquence Doppler pendant la durée dudit cycle de détection ; - on génère un ensemble de répliques à chaque signal de ladite suite de signaux en fonction d'un ensemble d'hypothèses angulaires autour de l'angle d'élévation mesuré dans le cycle de détection du dernier signal de ladite suite, chaque réplique étant fonction d'une hypothèse angulaire ; - on établit un ensemble de corrélations entre chacune desdites répliques et les signaux de ladite suite, pris deux à deux ; - on sélectionne la réplique donnant la corrélation maximum dans ledit ensemble de corrélations, l'hypothèse angulaire correspondant à ladite réplique étant retenue comme valeur affinée de l'angle d'élévation de ladite cible.
FR1800205A 2018-03-12 2018-03-12 Procede de localisation haute resolution d'une cible selon un axe vertical, notamment pour son guidage et radar mettant en oeuvre un tel procede Active FR3078783B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1800205A FR3078783B1 (fr) 2018-03-12 2018-03-12 Procede de localisation haute resolution d'une cible selon un axe vertical, notamment pour son guidage et radar mettant en oeuvre un tel procede

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1800205 2018-03-12
FR1800205A FR3078783B1 (fr) 2018-03-12 2018-03-12 Procede de localisation haute resolution d'une cible selon un axe vertical, notamment pour son guidage et radar mettant en oeuvre un tel procede

Publications (2)

Publication Number Publication Date
FR3078783A1 FR3078783A1 (fr) 2019-09-13
FR3078783B1 true FR3078783B1 (fr) 2020-02-21

Family

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FR1800205A Active FR3078783B1 (fr) 2018-03-12 2018-03-12 Procede de localisation haute resolution d'une cible selon un axe vertical, notamment pour son guidage et radar mettant en oeuvre un tel procede

Country Status (1)

Country Link
FR (1) FR3078783B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112363143B (zh) * 2020-11-24 2023-11-07 北京小米移动软件有限公司 一种空调设备基于毫米波进行空间识别的方法和系统

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878336B1 (fr) * 2004-11-19 2007-04-27 Thales Sa Procede et dispositif de localisation d'aeronefs, notamment pour leur guidage automatique en phase d'atterrissage
US8678321B2 (en) * 2009-06-15 2014-03-25 Blue Origin, Llc Sea landing of space launch vehicles and associated systems and methods
FR3002098B1 (fr) * 2013-02-08 2016-04-01 Thales Sa Transpondeur pour radar doppler, systeme de localisation de cibles utilisant un tel transpondeur
FR3064800B1 (fr) * 2017-03-30 2020-09-25 Thales Sa Procede de guidage d'une cible aerienne, notamment en phase d'atterrissage vertical, et systeme radar mettant en oeuvre un tel procede

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Publication number Publication date
FR3078783A1 (fr) 2019-09-13

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