FR2708744A1 - Signal processing method and device. - Google Patents

Signal processing method and device.

Info

Publication number
FR2708744A1
FR2708744A1 FR9408723A FR9408723A FR2708744A1 FR 2708744 A1 FR2708744 A1 FR 2708744A1 FR 9408723 A FR9408723 A FR 9408723A FR 9408723 A FR9408723 A FR 9408723A FR 2708744 A1 FR2708744 A1 FR 2708744A1
Authority
FR
France
Prior art keywords
signal
cross correlator
transmitted
signals
already known
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.)
Granted
Application number
FR9408723A
Other languages
French (fr)
Other versions
FR2708744B1 (en
Inventor
Damp Dr Stephan
Sommer Eckhart
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.)
Institut Franco Allemand de Recherches de Saint Louis ISL
Original Assignee
Institut Franco Allemand de Recherches de Saint Louis ISL
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 Institut Franco Allemand de Recherches de Saint Louis ISL filed Critical Institut Franco Allemand de Recherches de Saint Louis ISL
Publication of FR2708744A1 publication Critical patent/FR2708744A1/en
Application granted granted Critical
Publication of FR2708744B1 publication Critical patent/FR2708744B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01P5/18—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 time taken to traverse a fixed distance
    • G01P5/22—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 time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • 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
    • 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
    • G01S7/491—Details of non-pulse systems
    • G01S7/4912—Receivers
    • G01S7/4915—Time delay measurement, e.g. operational details for pixel components; Phase measurement
    • 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
    • G01S7/491—Details of non-pulse systems
    • G01S7/493—Extracting wanted echo signals
    • 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

Landscapes

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

Abstract

L'invention concerne un procédé de traitement de signaux de mesure, en particulier en anémométrie laser à effet Doppler, les signaux captés étant des signaux dont la forme ou la signature sont de préférence déjà connues et qui font l'objet ensuite d'un traitement portant notamment sur leur étendue dans le temps. Conformément à la présente invention, chacun des signaux captés est transmis à au moins un corrélateur croisé qui est conçu de manière à pouvoir reconnaître au moins un signal déjà connu, le signal transmis étant comparé dans le corrélateur croisé à un modèle sur un nombre de points d'appui de préférence réduit au minimum. Le signal de mesure respectif est transmis à un corrélateur croisé présentant un temps de décalage différent et le corrélateur croisé qui reconnaît le signal répond.The invention relates to a method for processing measurement signals, in particular in Doppler laser anemometry, the signals picked up being signals whose shape or signature are preferably already known and which are then the subject of processing. relating in particular to their extent over time. In accordance with the present invention, each of the signals picked up is transmitted to at least one cross correlator which is designed so as to be able to recognize at least one already known signal, the transmitted signal being compared in the cross correlator to a model on a number of points. preferably reduced to a minimum. The respective measurement signal is transmitted to a cross correlator having a different lag time and the cross correlator which recognizes the signal responds.

FR9408723A 1993-07-14 1994-07-13 Signal processing method and device. Expired - Fee Related FR2708744B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934323553 DE4323553A1 (en) 1993-07-14 1993-07-14 Signal processing method and device

Publications (2)

Publication Number Publication Date
FR2708744A1 true FR2708744A1 (en) 1995-02-10
FR2708744B1 FR2708744B1 (en) 1996-04-05

Family

ID=6492768

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9408723A Expired - Fee Related FR2708744B1 (en) 1993-07-14 1994-07-13 Signal processing method and device.

Country Status (2)

Country Link
DE (1) DE4323553A1 (en)
FR (1) FR2708744B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2948459A1 (en) * 2009-07-24 2011-01-28 Thales Sa METHOD AND SYSTEM OF MONO-PARTICLE ANEMOMETRY BY LIDAR

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10038494A1 (en) * 2000-08-08 2002-02-21 Abb Patent Gmbh Data processing method for equipment monitoring uses autocorrelation function to identify noise corruption
US7065064B2 (en) * 2001-12-20 2006-06-20 Interdigital Technology Corporation Cell search using peak quality factors

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268519A1 (en) * 1986-10-31 1988-05-25 Office National D'etudes Et De Recherches Aerospatiales(O.N.E.R.A.) System of processing signals drowned in a noise and its application to fringe laser velocimetry
US5005144A (en) * 1989-01-11 1991-04-02 Tsuyoshi Nakajima Signal processing system for flow velocity in laser doppler velocimeter
DD290789A7 (en) * 1988-09-06 1991-06-13 F U. O Electronic Systems Gmbh,De METHOD AND CIRCUIT ARRANGEMENT FOR THE APPROACHED CORRELATION AND SIGNAL PROCESSING BY RISC PROCESSOR

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268519A1 (en) * 1986-10-31 1988-05-25 Office National D'etudes Et De Recherches Aerospatiales(O.N.E.R.A.) System of processing signals drowned in a noise and its application to fringe laser velocimetry
DD290789A7 (en) * 1988-09-06 1991-06-13 F U. O Electronic Systems Gmbh,De METHOD AND CIRCUIT ARRANGEMENT FOR THE APPROACHED CORRELATION AND SIGNAL PROCESSING BY RISC PROCESSOR
US5005144A (en) * 1989-01-11 1991-04-02 Tsuyoshi Nakajima Signal processing system for flow velocity in laser doppler velocimeter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 9145, Derwent World Patents Index; AN 91-326138 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2948459A1 (en) * 2009-07-24 2011-01-28 Thales Sa METHOD AND SYSTEM OF MONO-PARTICLE ANEMOMETRY BY LIDAR
EP2282216A3 (en) * 2009-07-24 2011-03-16 Thales Method and system for single-particle anemometry using LIDAR
US8325328B2 (en) 2009-07-24 2012-12-04 Thales Single-particle LIDAR anemometry method and system

Also Published As

Publication number Publication date
FR2708744B1 (en) 1996-04-05
DE4323553A1 (en) 1995-01-19

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Effective date: 20060331