FR3125888B1 - Procede d'optimisation de la determination de la distance d'une cible par rapport a un radar a codage de phase en mode pulse - Google Patents

Procede d'optimisation de la determination de la distance d'une cible par rapport a un radar a codage de phase en mode pulse Download PDF

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Publication number
FR3125888B1
FR3125888B1 FR2108359A FR2108359A FR3125888B1 FR 3125888 B1 FR3125888 B1 FR 3125888B1 FR 2108359 A FR2108359 A FR 2108359A FR 2108359 A FR2108359 A FR 2108359A FR 3125888 B1 FR3125888 B1 FR 3125888B1
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France
Prior art keywords
pulses
target
imp2
imp1
optimizing
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Active
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FR2108359A
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English (en)
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FR3125888A1 (fr
Inventor
Nicolas Perron
Julien Schiellein
Maxime Inizan
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Thales SA
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Thales SA
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Priority to FR2108359A priority Critical patent/FR3125888B1/fr
Publication of FR3125888A1 publication Critical patent/FR3125888A1/fr
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Publication of FR3125888B1 publication Critical patent/FR3125888B1/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
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
    • G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
    • G01S13/284—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses
    • G01S13/288—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses phase modulated
    • 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
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/30—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using more than one pulse per radar period
    • 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
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/581—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of interrupted pulse modulated waves and based upon the Doppler effect resulting from movement of targets
    • G01S13/582—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of interrupted pulse modulated waves and based upon the Doppler effect resulting from movement of targets adapted for simultaneous range and velocity measurements
    • 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
    • G01S7/28—Details of pulse systems
    • G01S7/2806—Employing storage or delay devices which preserve the pulse form of the echo signal, e.g. for comparing and combining echoes received during different periods
    • 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
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods

Landscapes

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

Abstract

L’invention se rapporte à un procédé d’optimisation de la détermination de la distance d’une cible par rapport à un radar à codage de phase en mode pulsé, le procédé comprenant : a) générer une séquence d'impulsions d'émission comprenant une pluralité d’impulsions d’émission (Imp1, Imp2), chaque impulsion d’émission (Imp1, Imp2) comprenant une pluralité de groupes de sous-impulsions (Si1, Si2, Si3) ; b) émettre ladite pluralité de groupes de sous-impulsions (Si1, Si2, Si3) de façon non contigüe ; c) recevoir au moins certaines desdites impulsions émises (Imp1, Imp2), et effectuer une concaténation desdits groupes de sous-impulsions (Si1, Si2, Si3), ce qui fournit une pluralité d’impulsions concaténées (IC) selon le schéma de codage de phase ; d) calculer une fonction de corrélation entre chaque impulsion d’émission (Imp1, Imp2) et l'impulsion concaténée correspondante (IC), ladite fonction de corrélation présentant au moins un pic ; e) déterminer la distance d’une cible par rapport audit radar à partir de la position dudit pic dans la fonction de corrélation. Figure pour l’abrégé : Fig. 5
FR2108359A 2021-07-30 2021-07-30 Procede d'optimisation de la determination de la distance d'une cible par rapport a un radar a codage de phase en mode pulse Active FR3125888B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR2108359A FR3125888B1 (fr) 2021-07-30 2021-07-30 Procede d'optimisation de la determination de la distance d'une cible par rapport a un radar a codage de phase en mode pulse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2108359A FR3125888B1 (fr) 2021-07-30 2021-07-30 Procede d'optimisation de la determination de la distance d'une cible par rapport a un radar a codage de phase en mode pulse
FR2108359 2021-07-30

Publications (2)

Publication Number Publication Date
FR3125888A1 FR3125888A1 (fr) 2023-02-03
FR3125888B1 true FR3125888B1 (fr) 2023-07-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN121336126A (zh) * 2023-06-22 2026-01-13 瑞典爱立信有限公司 用于检测近距离对象和远距离对象的雷达脉冲

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2487374B (en) * 2011-01-18 2016-07-27 Thales Holdings Uk Plc Radar system synthesising a broadband waveform from a series of narrowband chirps and accounting for Doppler of a target between chirps
FR3007585B1 (fr) 2013-06-21 2015-06-05 Thales Sa Systeme de detection a emissions multiples simultanees et procede de detection

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Publication number Publication date
FR3125888A1 (fr) 2023-02-03

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