+

WO2009106278A3 - Laser doppler velocimeter - Google Patents

Laser doppler velocimeter Download PDF

Info

Publication number
WO2009106278A3
WO2009106278A3 PCT/EP2009/001270 EP2009001270W WO2009106278A3 WO 2009106278 A3 WO2009106278 A3 WO 2009106278A3 EP 2009001270 W EP2009001270 W EP 2009001270W WO 2009106278 A3 WO2009106278 A3 WO 2009106278A3
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
light beam
laser doppler
doppler velocimeter
reflected
Prior art date
Application number
PCT/EP2009/001270
Other languages
German (de)
French (fr)
Other versions
WO2009106278A2 (en
Inventor
Georg Bastian
Original Assignee
Fachhochschule Trier
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 Fachhochschule Trier filed Critical Fachhochschule Trier
Publication of WO2009106278A2 publication Critical patent/WO2009106278A2/en
Publication of WO2009106278A3 publication Critical patent/WO2009106278A3/en

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
    • 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
    • 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
    • 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
    • G01S7/4911—Transmitters
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/0607—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/1092—Multi-wavelength lasing
    • H01S5/1096—Multi-wavelength lasing in a single cavity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
    • H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
    • H01S5/18355—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL] having a defined polarisation

Landscapes

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

Abstract

The invention relates to a laser Doppler velocimeter comprising a device for generating a first light beam having a frequency f0 and a second light beam, the frequency of which is frequency-shifted relative to the first frequency by a frequency fS and thus has a second frequency f0+fS. The first light beam is reflected on a moving object, said reflected first light beam having a Doppler-shifted frequency f0+fD. The laser Doppler velocimeter further comprises a detection device for determining a beat frequency fSW from the superposition of the second light beam having the frequency f0+fS and the reflected first light beam having the frequency f0+fD. The invention is characterized in that the device for generating a first light beam and a second light beam that is frequency-shifted by fS encompasses at least one semiconductor laser.
PCT/EP2009/001270 2008-02-29 2009-02-23 Laser doppler velocimeter WO2009106278A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008012028A DE102008012028A1 (en) 2008-02-29 2008-02-29 Device for laser Doppler velocity measurement
DE102008012028.6 2008-02-29

Publications (2)

Publication Number Publication Date
WO2009106278A2 WO2009106278A2 (en) 2009-09-03
WO2009106278A3 true WO2009106278A3 (en) 2009-12-03

Family

ID=40768047

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/001270 WO2009106278A2 (en) 2008-02-29 2009-02-23 Laser doppler velocimeter

Country Status (2)

Country Link
DE (1) DE102008012028A1 (en)
WO (1) WO2009106278A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014207965A1 (en) * 2014-04-28 2015-10-29 Robert Bosch Gmbh Device for object recognition

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2101832A (en) * 1981-06-16 1983-01-19 Nissan Motor A light pulse radar system
US5493395A (en) * 1991-05-02 1996-02-20 Canon Kabushiki Kaisha Wavelength variation measuring apparatus
US5926276A (en) * 1996-04-15 1999-07-20 Canon Kabushiki Kaisha Apparatus having an afocal lens system used in optical measurement of displacement
WO2001038884A1 (en) * 1999-11-22 2001-05-31 California Institute Of Technology Micro photonic particle sensor
US20010009458A1 (en) * 2000-01-20 2001-07-26 Kimio Asaka Coherent laser radar system and target measurement method
WO2003084006A2 (en) * 2002-04-03 2003-10-09 Esko-Graphics A/S Laser system
US20070121095A1 (en) * 2005-11-28 2007-05-31 Robert Lewis Distance measurement device with short range optics

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3606067B2 (en) * 1998-10-30 2005-01-05 スズキ株式会社 Vibration measuring method and apparatus
DE60141704D1 (en) * 2000-11-06 2010-05-12 Koninkl Philips Electronics Nv METHOD FOR MEASURING THE MOVEMENT OF AN INPUT DEVICE
CN100401095C (en) * 2002-05-29 2008-07-09 肯特·L·戴尼斯 System and method for measuring velocity using frequency modulation of laser output

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2101832A (en) * 1981-06-16 1983-01-19 Nissan Motor A light pulse radar system
US5493395A (en) * 1991-05-02 1996-02-20 Canon Kabushiki Kaisha Wavelength variation measuring apparatus
US5926276A (en) * 1996-04-15 1999-07-20 Canon Kabushiki Kaisha Apparatus having an afocal lens system used in optical measurement of displacement
WO2001038884A1 (en) * 1999-11-22 2001-05-31 California Institute Of Technology Micro photonic particle sensor
US20010009458A1 (en) * 2000-01-20 2001-07-26 Kimio Asaka Coherent laser radar system and target measurement method
WO2003084006A2 (en) * 2002-04-03 2003-10-09 Esko-Graphics A/S Laser system
US20070121095A1 (en) * 2005-11-28 2007-05-31 Robert Lewis Distance measurement device with short range optics

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GESKE J ET AL: "Dual-wavelength vertical-cavity surface-emitting laser arrays fabricated by nonplanar wafer bonding", 2002 IEEE 18TH. INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE. GARMISCH, GERMANY, SEPT. 29 - OKT. 3, 2002; [IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE], NEW YORK, NY : IEEE, US, vol. CONF. 18, 29 September 2002 (2002-09-29), pages 141 - 142, XP010609201, ISBN: 978-0-7803-7598-7 *

Also Published As

Publication number Publication date
DE102008012028A1 (en) 2009-09-10
WO2009106278A2 (en) 2009-09-03

Similar Documents

Publication Publication Date Title
WO2011016892A3 (en) Range imaging lidar
EP2388614A3 (en) Velocity measuring system
WO2005076116A3 (en) Optical input device based on doppler shift and laser self-mixing
EP1850739A4 (en) Laser radar system and system and method for providing chirped electromagnetic radiation
WO2010039421A3 (en) Ultrasound optical doppler hemometer and technique for using the same
WO2010000044A3 (en) Interferometric distance-measuring method with delayed chirp signal and such an apparatus
ATE475107T1 (en) FMCW RADAR METHOD WITH EVALUATION OF THE PHASE OF THE DIFFERENTIAL SIGNALS
WO2010106483A3 (en) Apparatus for determining a flow property of a fluid
JP2021527227A (en) Coherent LIDAR Pitch-Catch Scanning Methods and Systems
WO2017149526A3 (en) A method and apparatus for cooperative usage of multiple distance meters
WO2008051587A3 (en) Low coherence interferometry utilizing phase
WO2008063700A3 (en) Methods for detecting humans
WO2010030884A3 (en) Compact fiber optic geometry for a counter chirp fmcw coherent laser radar
GB0411097D0 (en) Laser radar device and method
ATE384962T1 (en) METHOD FOR DETECTING WIND SPEEDS USING A DOPPLER LIDAR SYSTEM, IN PARTICULAR ON BOARD AIRCRAFT, AND DOPPLER LIDAR SYSTEM
WO2006131859A3 (en) Laser optical feedback tomography sensor and method
WO2010061362A3 (en) Method and device for three-dimensional measurement of a dental model
CA2828441A1 (en) Method for measuring distance
GB0622354D0 (en) Self-mixing laser sensor
JP2018505427A5 (en)
JP2019512692A (en) Optical fazogram for LADAR vibration measurement
IN2012DN00691A (en)
ATE494563T1 (en) METHOD FOR DETERMINING THE OWN MOVEMENT OF A VEHICLE
WO2006036189A3 (en) System for enhanced detection of a target
WO2006104931A2 (en) Multi-beam laser vibrometry triangulation of acoustic sources

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09716182

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09716182

Country of ref document: EP

Kind code of ref document: A2

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载