DE19636922A1 - Verfahren zum Justieren eines Laser-Doppler-Anemometers - Google Patents
Verfahren zum Justieren eines Laser-Doppler-AnemometersInfo
- Publication number
- DE19636922A1 DE19636922A1 DE19636922A DE19636922A DE19636922A1 DE 19636922 A1 DE19636922 A1 DE 19636922A1 DE 19636922 A DE19636922 A DE 19636922A DE 19636922 A DE19636922 A DE 19636922A DE 19636922 A1 DE19636922 A1 DE 19636922A1
- Authority
- DE
- Germany
- Prior art keywords
- laser
- optics
- receiving optics
- light intensity
- intensity distribution
- 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
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
- 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
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
- G01P21/025—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers for measuring speed of fluids; for measuring speed of bodies relative to fluids
-
- 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
- G01S7/497—Means for monitoring or calibrating
- G01S7/4972—Alignment of sensor
-
- 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
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/95—Lidar systems specially adapted for specific applications for meteorological use
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Multimedia (AREA)
- Aviation & Aerospace Engineering (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Description
2 Strahlteiler
3 Sendeoptik
4 Empfangsoptik
5 Auswerteeinrichtung
6 Laserlicht
7 Laserstrahl
8 Laserstrahl
9 Objektiv
10 Objektiv
11 Schnittpunkt
12 Fokuspunkt
13 Oberfläche
14 Videokamera
15 Steuereinrichtung
16 Laser
17 Laserlicht
18 Verstelleinrichtung
19 Verstelleinrichtung
20 Linie gleicher Lichtintensität
21 Schritt: Einstellen des Fokuspunkts
22 Schritt: Ausrichten des 1. Laserstrahls
23 Schritt: Ausrichten des 2. Laserstrahls
24 Schritt: Einstellen des Schnittpunkts
25 Schritt: Ausrichten des Schnittpunkts
26 Schleife
27 Schritt: Auslenkung aller Laserstrahlen
28 Schritt: Ausrichten des I./1. Laserstrahls
29 Schritt: Ausrichten des I./2. Laserstrahls
30 Schritt: Ausrichten des II./1. Laserstrahls
31 Schritt: Ausrichten des II./2. Laserstrahls
32 Schritt: Rückführung aller Laserstrahlen
33 optische Achse
Claims (10)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19636922A DE19636922C2 (de) | 1996-09-11 | 1996-09-11 | Verfahren zum Justieren eines Laser-Doppler-Anemometers |
FR9710993A FR2753275B1 (fr) | 1996-09-11 | 1997-09-04 | Procede d'ajustage d'un anemometre doppler a laser |
US08/926,634 US5875024A (en) | 1996-09-11 | 1997-09-10 | Method of adjusting a laser doppler anemometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19636922A DE19636922C2 (de) | 1996-09-11 | 1996-09-11 | Verfahren zum Justieren eines Laser-Doppler-Anemometers |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19636922A1 true DE19636922A1 (de) | 1998-03-26 |
DE19636922C2 DE19636922C2 (de) | 2000-01-27 |
Family
ID=7805270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19636922A Expired - Fee Related DE19636922C2 (de) | 1996-09-11 | 1996-09-11 | Verfahren zum Justieren eines Laser-Doppler-Anemometers |
Country Status (3)
Country | Link |
---|---|
US (1) | US5875024A (de) |
DE (1) | DE19636922C2 (de) |
FR (1) | FR2753275B1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9926516D0 (en) | 1999-11-10 | 2000-01-12 | Secr Defence | Doppler sensor apparatus |
KR20010057961A (ko) * | 1999-12-23 | 2001-07-05 | 신현준 | 레이저 판속계 및 이것을 이용한 강판의 반사도 변화에따른 측정오차 제거방법 |
FR2818386B1 (fr) * | 2000-12-14 | 2004-06-04 | Cit Alcatel | Dispositif pour l'alignement des voies d'emission et de reception d'un lidar spatial et lidar equipe d'un tel dispositif |
GB0223512D0 (en) * | 2002-10-10 | 2002-11-13 | Qinetiq Ltd | Bistatic laser radar apparatus |
US6765655B1 (en) | 2003-05-30 | 2004-07-20 | General Electric Company | Data aquisition system and method for a laser doppler anemometer |
US7126586B2 (en) * | 2004-09-17 | 2006-10-24 | Microsoft Corporation | Data input devices and methods for detecting movement of a tracking surface by detecting laser doppler self-mixing effects of a frequency modulated laser light beam |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4126392A (en) * | 1976-10-20 | 1978-11-21 | United Technologies Corporation | Optical system for laser doppler velocimeter and the like |
US4637717A (en) * | 1984-04-12 | 1987-01-20 | The United States Of America As Represented By The United States Department Of Energy | Dual beam translator for use in Laser Doppler anemometry |
EP0333905A1 (de) * | 1988-03-25 | 1989-09-27 | Dietrich Dr. Dopheide | 4PI-Laser-Doppler -Anemometer (LDA) zur Messung von Geschwindigkeiten bewegter Messobjekte |
DE3815474A1 (de) * | 1988-05-06 | 1989-11-16 | Deutsche Forsch Luft Raumfahrt | Verfahren und vorrichtung zur messung der stroemungsgeschwindigkeit, insbesondere in einem windkanal |
DE3820654A1 (de) * | 1988-06-18 | 1989-12-21 | Deutsche Forsch Luft Raumfahrt | Verfahren und vorrichtung zur bestimmung des vorzeichens der richtung einer teilchenstroemung |
US5090801A (en) * | 1990-10-11 | 1992-02-25 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Laser velocimeter for near-surface measurements |
-
1996
- 1996-09-11 DE DE19636922A patent/DE19636922C2/de not_active Expired - Fee Related
-
1997
- 1997-09-04 FR FR9710993A patent/FR2753275B1/fr not_active Expired - Fee Related
- 1997-09-10 US US08/926,634 patent/US5875024A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19636922C2 (de) | 2000-01-27 |
US5875024A (en) | 1999-02-23 |
FR2753275A1 (fr) | 1998-03-13 |
FR2753275B1 (fr) | 2000-05-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: DEUTSCHES ZENTRUM FUER LUFT- UND RAUMFAHRT E.V., 5 |
|
8181 | Inventor (new situation) |
Free format text: SEELHORST, ULRICH, DIPL.-PHYS., 37085 GOETTINGEN, DE SCHMIDT, FRANK, DIPL.-ING., 37083 GOETTINGEN, DE BUETEFISCH, KARL-ALOYS, DIPL.-PHYS. DR., 37120 BOVENDEN, DE SAUERLAND, KARL-HEINZ, DIPL.-ING., 37176 NOERTEN-HARDENBERG, DE PALLUCH, ILMS, 81375 MUENCHEN, DE |
|
8181 | Inventor (new situation) |
Free format text: SEELHORST, ULRICH, DIPL.-PHYS., 37085 GOETTINGEN, DE SCHMIDT, FRANK, DIPL.-ING., 37083 GOETTINGEN, DE BUETEFISCH, KARL-ALOYS, DIPL.-PHYS. DR., 37120 BOVENDEN, DE SAUERLAND, KARL-HEINZ, DIPL.-ING., 37176 NOERTEN-HARDENBERG, DE PALLUCH, JENS, 81375 MUENCHEN, DE |
|
8180 | Miscellaneous part 1 |
Free format text: DER ANMELDER IST ZU AENDERN IN: DEUTSCHES ZENTRUM FUER LUFT- UND RAUMFAHRT E.V., 53175 BONN, DE PALLUCH, JENS, 81375 MUENCHEN, DE |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PALLUCH, JENS, 81375 MUENCHEN, DE Owner name: DEUTSCHES ZENTRUM F. LUFT- UND RAUMFAHRT E.V., DE |
|
8339 | Ceased/non-payment of the annual fee |