FR2708744B1 - Signal processing method and device. - Google Patents

Signal processing method and device.

Info

Publication number
FR2708744B1
FR2708744B1 FR9408723A FR9408723A FR2708744B1 FR 2708744 B1 FR2708744 B1 FR 2708744B1 FR 9408723 A FR9408723 A FR 9408723A FR 9408723 A FR9408723 A FR 9408723A FR 2708744 B1 FR2708744 B1 FR 2708744B1
Authority
FR
France
Prior art keywords
correlator
measured signal
cross
measured
fed
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.)
Expired - Fee Related
Application number
FR9408723A
Other languages
French (fr)
Other versions
FR2708744A1 (en
Inventor
Damp Stephan Dr
Eckhart Sommer
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

The invention relates to a method for processing measured signals, in particular in laser Doppler anemometry, measured signals, preferably having predetermined shape or signature, being acquired and the measured signals being further processed, in particular for evaluating their temporal extent, according to the invention a respectively received measured signal being fed to at least one cross-correlator which is configured so that it can recognise at least one predetermined measured signal, the fed measured signal being compared in the cross-correlator with a pattern, preferably at a minimised number of support points; the respective measured signal is transferred to a cross-correlator which has a different offset time, with the respective cross-correlator which acquires the respective measured signal responding.
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 FR2708744A1 (en) 1995-02-10
FR2708744B1 true 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)

Families Citing this family (3)

* 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
FR2948459B1 (en) * 2009-07-24 2011-08-19 Thales Sa METHOD AND SYSTEM OF MONO-PARTICLE ANEMOMETRY BY LIDAR

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2606157B1 (en) * 1986-10-31 1989-01-06 Onera (Off Nat Aerospatiale) SYSTEM FOR PROCESSING SIGNALS IMMERSED IN NOISE AND ITS APPLICATION IN 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
JPH02236171A (en) * 1989-01-11 1990-09-19 Takeshi Nakajima Flow velocity measuring apparatus of laser doppler current meter

Also Published As

Publication number Publication date
DE4323553A1 (en) 1995-01-19
FR2708744A1 (en) 1995-02-10

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20060331