JPS5723873A - Laser doppler speedometer - Google Patents

Laser doppler speedometer

Info

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
Application number
JP9890080A
Other languages
Japanese (ja)
Other versions
JPS6367673B2 (en
Inventor
Kazuo Hisama
Shuichi Tai
Toshio Aranishi
Koichi Hamanaka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9890080A priority Critical patent/JPS5723873A/en
Publication of JPS5723873A publication Critical patent/JPS5723873A/en
Publication of JPS6367673B2 publication Critical patent/JPS6367673B2/ja
Granted legal-status Critical Current

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.
JP9890080A 1980-07-18 1980-07-18 Laser doppler speedometer Granted JPS5723873A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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