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WO1999035519A3 - Diffusion de rayleigh modulee et filtree - Google Patents

Diffusion de rayleigh modulee et filtree Download PDF

Info

Publication number
WO1999035519A3
WO1999035519A3 PCT/US1999/000691 US9900691W WO9935519A3 WO 1999035519 A3 WO1999035519 A3 WO 1999035519A3 US 9900691 W US9900691 W US 9900691W WO 9935519 A3 WO9935519 A3 WO 9935519A3
Authority
WO
WIPO (PCT)
Prior art keywords
scattered light
modulated
rayleigh scattering
laser
fluid
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.)
Ceased
Application number
PCT/US1999/000691
Other languages
English (en)
Other versions
WO1999035519A2 (fr
Inventor
Philip L Varghese
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.)
University of Texas System
University of Texas at Austin
Original Assignee
University of Texas System
University of Texas at Austin
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 University of Texas System, University of Texas at Austin filed Critical University of Texas System
Priority to AU24556/99A priority Critical patent/AU2455699A/en
Publication of WO1999035519A2 publication Critical patent/WO1999035519A2/fr
Publication of WO1999035519A3 publication Critical patent/WO1999035519A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G01P5/26—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
    • G01S17/02—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)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention porte sur un système et un procédé de mesure de la vitesse d'un fluide, tel qu'un jet de gaz supersonique, recourant à la lumière laser modulée d'une diode laser accordable, la modulation consistant à faire vibrer le laser. La lumière diffusée une fois recueillie traverse une cellule contenant par exemple du rubidium. Le motif de la lumière diffusée est comparé à un modèle de référence. Le décalage Doppler de la lumière diffusée par rapport à la référence fournit des données servant à calculer la vitesse du fluide.
PCT/US1999/000691 1998-01-12 1999-01-12 Diffusion de rayleigh modulee et filtree Ceased WO1999035519A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU24556/99A AU2455699A (en) 1998-01-12 1999-01-12 Modulated filtered rayleigh scattering

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7125098P 1998-01-12 1998-01-12
US60/071,250 1998-01-12

Publications (2)

Publication Number Publication Date
WO1999035519A2 WO1999035519A2 (fr) 1999-07-15
WO1999035519A3 true WO1999035519A3 (fr) 1999-09-30

Family

ID=22100191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/000691 Ceased WO1999035519A2 (fr) 1998-01-12 1999-01-12 Diffusion de rayleigh modulee et filtree

Country Status (2)

Country Link
AU (1) AU2455699A (fr)
WO (1) WO1999035519A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE361472T1 (de) 2002-08-02 2007-05-15 Ophir Corp System und verfahren zum optischen messen von luftdaten
US7564539B2 (en) 2002-08-02 2009-07-21 Ophir Corporation Optical air data systems and methods
US8072584B2 (en) 2002-08-02 2011-12-06 Ophir Corporation Optical air data systems and methods
DE102005028268B4 (de) 2005-06-14 2013-12-12 Forschungsverbund Berlin E.V. Verfahren und Vorrichtung zur Erzeugung und Detektion eines Raman-Spektrums
DE102009042404B3 (de) * 2009-09-16 2011-04-14 Technische Universität Dresden Verfahren zur Bestimmung der Geschwindigkeit eines bewegten Fluids unter Einsatz einer Eigenkalibrierung eines Doppler-Global-Velozimeters mit Laserfrequenzmodulation
GB2532585B (en) * 2013-06-30 2018-04-25 Wind Farm Analytics Ltd Turbine fluid velocity field measurement
US9334807B2 (en) 2014-05-13 2016-05-10 The Boeing Company Methods and apparatus to determine airflow conditions at an inlet of an engine
DE202016102010U1 (de) * 2016-04-15 2017-07-18 Deutsches Zentrum für Luft- und Raumfahrt e.V. Luftfahrzeug
CN113176582B (zh) * 2021-04-27 2023-07-18 厦门大学 一种基于双频泵浦的流速探测激光雷达和流速探测方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919536A (en) * 1988-06-06 1990-04-24 Northrop Corporation System for measuring velocity field of fluid flow utilizing a laser-doppler spectral image converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919536A (en) * 1988-06-06 1990-04-24 Northrop Corporation System for measuring velocity field of fluid flow utilizing a laser-doppler spectral image converter

Also Published As

Publication number Publication date
AU2455699A (en) 1999-07-26
WO1999035519A2 (fr) 1999-07-15

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