FR3150871B1 - Systeme lidar a detection directe - Google Patents

Systeme lidar a detection directe Download PDF

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Publication number
FR3150871B1
FR3150871B1 FR2307264A FR2307264A FR3150871B1 FR 3150871 B1 FR3150871 B1 FR 3150871B1 FR 2307264 A FR2307264 A FR 2307264A FR 2307264 A FR2307264 A FR 2307264A FR 3150871 B1 FR3150871 B1 FR 3150871B1
Authority
FR
France
Prior art keywords
lidar system
radiation
target volume
value
peak
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
FR2307264A
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English (en)
Other versions
FR3150871A1 (fr
Inventor
Laurent Lombard
David Tomline Michel
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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Priority to FR2307264A priority Critical patent/FR3150871B1/fr
Priority to CN202480044026.8A priority patent/CN121443968A/zh
Priority to PCT/EP2024/068947 priority patent/WO2025012096A1/fr
Publication of FR3150871A1 publication Critical patent/FR3150871A1/fr
Application granted granted Critical
Publication of FR3150871B1 publication Critical patent/FR3150871B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
    • 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
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone

Landscapes

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

Abstract

Un système LIDAR à détection directe (100) comprend un modulateur (12) pour conférer un spectre en peigne à un rayonnement laser qui est émis en direction d’un volume-cible (T). Le spectre en peigne permet d’utiliser une technologie à base de fibres optiques et/ou de circuits optiques intégrés pour réaliser un ensemble de source de rayonnement (1) du système LIDAR, tout en dépassant une valeur limite de puissance de rayonnement qui est due à la diffusion stimulée par effet Brillouin. Une valeur d’un intervalle spectral inter-pics du rayonnement laser émis est sélectionnée électriquement par rapport à un écart de longueur de trajet optique qui est effective dans un interféromètre (3) du système LIDAR. De cette façon, toutes les composantes spectrales en forme de pics d’un rayonnement collecté (RC) contribuent à des signaux de mesure qui sont utilisés pour obtenir une valeur de vitesse d’un contenu du volume-cible.Figure d’abrégé : Figure 1
FR2307264A 2023-07-07 2023-07-07 Systeme lidar a detection directe Active FR3150871B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR2307264A FR3150871B1 (fr) 2023-07-07 2023-07-07 Systeme lidar a detection directe
CN202480044026.8A CN121443968A (zh) 2023-07-07 2024-07-04 直接探测lidar系统
PCT/EP2024/068947 WO2025012096A1 (fr) 2023-07-07 2024-07-04 Systeme lidar a detection directe

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2307264 2023-07-07
FR2307264A FR3150871B1 (fr) 2023-07-07 2023-07-07 Systeme lidar a detection directe

Publications (2)

Publication Number Publication Date
FR3150871A1 FR3150871A1 (fr) 2025-01-10
FR3150871B1 true FR3150871B1 (fr) 2025-06-20

Family

ID=88965559

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2307264A Active FR3150871B1 (fr) 2023-07-07 2023-07-07 Systeme lidar a detection directe

Country Status (3)

Country Link
CN (1) CN121443968A (fr)
FR (1) FR3150871B1 (fr)
WO (1) WO2025012096A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119805405B (zh) * 2025-03-14 2025-05-30 山东科技大学 一种机载海洋激光雷达水底微弱回波信号探测方法及系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0304344D0 (en) * 2003-02-26 2003-04-02 Bae Systems Plc Gas velocity sensor
DE10316762B4 (de) * 2003-04-10 2007-01-25 Eads Deutschland Gmbh Verfahren zur Erfassung von Windgeschwindigkeiten mit einem Doppler-Lidar-System, insbesondere an Bord von Flugzeugen, und Doppler-Lidar-System
FR2962553B1 (fr) * 2010-07-08 2012-08-03 Centre Nat Etd Spatiales Dispositif de teledetection laser et procede d'interferometrie

Also Published As

Publication number Publication date
WO2025012096A1 (fr) 2025-01-16
FR3150871A1 (fr) 2025-01-10
CN121443968A (zh) 2026-01-30

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