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

Info

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
Authority
FR
France
Prior art keywords
pulses
target
imp2
imp1
optimizing
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
FR2108359A
Other languages
English (en)
Other versions
FR3125888A1 (fr
Inventor
Nicolas Perron
Julien Schiellein
Maxime Inizan
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.)
Thales SA
Original Assignee
Thales SA
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 Thales SA filed Critical Thales SA
Priority to FR2108359A priority Critical patent/FR3125888B1/fr
Publication of FR3125888A1 publication Critical patent/FR3125888A1/fr
Application granted granted Critical
Publication of FR3125888B1 publication Critical patent/FR3125888B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Family

ID=79270332

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2108359A Active 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

Country Status (1)

Country Link
FR (1) FR3125888B1 (fr)

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

Also Published As

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

Similar Documents

Publication Publication Date Title
US6577666B2 (en) Laser amplification system
DE60235446D1 (de) Lidar-system und verfahren
CN1519580A (zh) 光波距离计
CN106125067A (zh) 阵列激光雷达系统中的伪随机序列
CN107153193A (zh) 多线激光雷达和多线激光雷达控制方法
DE50000497D1 (de) Optische anordnung zur symmetrierung der strahlung von zweidimensionalen arrays von laserdioden
CN106169688B (zh) 基于调谐激光器的高速、大角度光束扫描方法及装置
ES2083164T3 (es) Procedimiento para la refundicion por laser de superficies metalicas.
CN208753726U (zh) 非稳腔光谱合束装置
CN110361715A (zh) 一种脉冲编码装置、编码方法及激光雷达系统
CN107153198A (zh) 激光雷达和激光雷达控制方法
FR3125888B1 (fr) Procede d'optimisation de la determination de la distance d'une cible par rapport a un radar a codage de phase en mode pulse
US20220113408A1 (en) Optical distance measuring device
WO2017081501A3 (fr) Procédé de génération d'un rayonnement térahertz, et source de rayonnement térahertz
AU2001269027B2 (en) Optical rangefinder
CN111257897A (zh) 一种激光雷达
US5790241A (en) Laser rangefinder
CN103837239A (zh) 基于反射光波形测量非聚焦泵浦的受激布里渊散射阈值的装置及阈值测量方法
GB1457973A (en) Laser amplifier
RU2477553C1 (ru) Источник импульсного лазерного излучения
RU2007112013A (ru) Лазерный дальномер
CA2407533C (fr) Telemetre optique
CN103424882B (zh) 基于逆达曼光栅的合束孔径填充装置
Lamb et al. Single-pixel imaging using 3d scanning time-of-flight photon counting
EP0984531A3 (fr) Laser à excimer avec multiplicateur d'impulsions et de faisceaux

Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 2

PLSC Publication of the preliminary search report

Effective date: 20230203

PLFP Fee payment

Year of fee payment: 3