JPS5723873A - Laser doppler speedometer - Google Patents
Laser doppler speedometerInfo
- Publication number
- JPS5723873A JPS5723873A JP9890080A JP9890080A JPS5723873A JP S5723873 A JPS5723873 A JP S5723873A JP 9890080 A JP9890080 A JP 9890080A JP 9890080 A JP9890080 A JP 9890080A JP S5723873 A JPS5723873 A JP S5723873A
- Authority
- JP
- Japan
- Prior art keywords
- light
- laser
- given
- optical receiver
- branched
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
PURPOSE:To achieve high performance, by detecting one branch light with an optical receiver in heterodyne detection after the laser emission light is branched into two, and electrically operating the difference between this detected output and that including a speed signal. CONSTITUTION:Laser light from a laser 1 is branched into two at a beam splitter 2, and one light after two branch is introduced to a optical receiver 5' directly. Another light is given to a speed probe 3, and scattered light subject to doppler effect at a measured objective 7 and the reference light are given to another optical receiver. After the output of the receivers 5, 5' is differentially amplified at a differential amplifier 8 and noise by interference between laser modes is rejected, the result is given to a spectrum analyzer 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9890080A JPS5723873A (en) | 1980-07-18 | 1980-07-18 | Laser doppler speedometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9890080A JPS5723873A (en) | 1980-07-18 | 1980-07-18 | Laser doppler speedometer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5723873A true JPS5723873A (en) | 1982-02-08 |
JPS6367673B2 JPS6367673B2 (en) | 1988-12-27 |
Family
ID=14231997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9890080A Granted JPS5723873A (en) | 1980-07-18 | 1980-07-18 | Laser doppler speedometer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5723873A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6048190U (en) * | 1983-09-09 | 1985-04-04 | 日本電気株式会社 | Optical input arrival time difference measuring device |
KR20010057953A (en) * | 1999-12-23 | 2001-07-05 | 신현준 | Velocity measurer and its method of sheet material using laser |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4738828B1 (en) * | 1967-09-22 | 1972-09-30 | ||
JPS5563634A (en) * | 1978-10-31 | 1980-05-13 | Nilsson Gert Erik | Method of deciding flowing motion of fluid and its device |
-
1980
- 1980-07-18 JP JP9890080A patent/JPS5723873A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4738828B1 (en) * | 1967-09-22 | 1972-09-30 | ||
JPS5563634A (en) * | 1978-10-31 | 1980-05-13 | Nilsson Gert Erik | Method of deciding flowing motion of fluid and its device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6048190U (en) * | 1983-09-09 | 1985-04-04 | 日本電気株式会社 | Optical input arrival time difference measuring device |
KR20010057953A (en) * | 1999-12-23 | 2001-07-05 | 신현준 | Velocity measurer and its method of sheet material using laser |
Also Published As
Publication number | Publication date |
---|---|
JPS6367673B2 (en) | 1988-12-27 |
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