FR3125889B1 - système embarqué à ondes entretenues non modulées d’évitement de terrain - Google Patents

système embarqué à ondes entretenues non modulées d’évitement de terrain Download PDF

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Publication number
FR3125889B1
FR3125889B1 FR2108324A FR2108324A FR3125889B1 FR 3125889 B1 FR3125889 B1 FR 3125889B1 FR 2108324 A FR2108324 A FR 2108324A FR 2108324 A FR2108324 A FR 2108324A FR 3125889 B1 FR3125889 B1 FR 3125889B1
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France
Prior art keywords
terrain
continuous wave
doppler
embedded
frequency
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FR2108324A
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English (en)
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FR3125889A1 (fr
Inventor
Aurélien Cabarbaye
André Cabarbaye
Adrien Cabarbaye
Pedro Castillo
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Priority to FR2108324A priority Critical patent/FR3125889B1/fr
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Publication of FR3125889B1 publication Critical patent/FR3125889B1/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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • 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
    • G01S13/9047—Doppler beam sharpening mode
    • 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
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/933—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of aircraft or spacecraft
    • G01S13/935—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of aircraft or spacecraft for terrain-avoidance

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

Abstract

L'invention concerne un système embarqué (1) qui permet de reconstituer le profil 2D du terrain devant un véhicule porteur. L’invention comprend : - Un module Doppler à onde entretenue (2) connecté à des modules d’émissions (3) réceptions (4) qui éclairent le terrain situé sous et devant l’aéronef porteur - Un filtre passe bas (5) permettant d’isoler la fréquence doppler du signal obtenu. - Un dispositif de calcul de la transformée de Fourier (6) permettant de déterminer l’angle de l’ensemble des échos reçus suivant le principe d’affûtage du faisceau Doppler. - Un dispositif (8) capable de mesurer la dérive fréquentielle de chaque lobe pour en extraire la dérivée temporelle. - Un calculateur (9) permettant d’estimer les distances entre le radar et chaque objet ayant généré un écho. Une reconstitution 2D du terrain devant l’aéronef porteur peut ainsi s’effectuer à partir de la fréquence Doppler et de la dérive fréquentielle des échos générés par les obstacles présents sur le terrain. Figure pour l'abrégé : [Fig 1]
FR2108324A 2021-07-30 2021-07-30 système embarqué à ondes entretenues non modulées d’évitement de terrain Active FR3125889B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2108324A FR3125889B1 (fr) 2021-07-30 2021-07-30 système embarqué à ondes entretenues non modulées d’évitement de terrain

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2108324 2021-07-30
FR2108324A FR3125889B1 (fr) 2021-07-30 2021-07-30 système embarqué à ondes entretenues non modulées d’évitement de terrain

Publications (2)

Publication Number Publication Date
FR3125889A1 FR3125889A1 (fr) 2023-02-03
FR3125889B1 true FR3125889B1 (fr) 2023-11-03

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ID=81328585

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2108324A Active FR3125889B1 (fr) 2021-07-30 2021-07-30 système embarqué à ondes entretenues non modulées d’évitement de terrain

Country Status (1)

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FR (1) FR3125889B1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2128846C1 (ru) 1997-07-17 1999-04-10 Открытое акционерное общество "Фазотрон - научно-исследовательский институт радиостроения" Способ определения параметров наземных препятствий при полете летательных аппаратов на малой высоте
IL154396A0 (fr) 2002-12-29 2009-02-11 Haim Niv
FR2969307B1 (fr) * 2010-12-21 2013-01-18 Thales Sa Procede et dispositif de suivi de variation de terrain
FR3101431B1 (fr) * 2019-09-26 2021-10-15 Thales Sa Procédé d'imagerie radar, et radar mettant en oeuvre un tel procédé

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Publication number Publication date
FR3125889A1 (fr) 2023-02-03

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