JPS5531962A - Water depth measuring unit of laser - Google Patents

Water depth measuring unit of laser

Info

Publication number
JPS5531962A
JPS5531962A JP10583178A JP10583178A JPS5531962A JP S5531962 A JPS5531962 A JP S5531962A JP 10583178 A JP10583178 A JP 10583178A JP 10583178 A JP10583178 A JP 10583178A JP S5531962 A JPS5531962 A JP S5531962A
Authority
JP
Japan
Prior art keywords
circuit
photo electric
laser
detection circuit
trigger
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
JP10583178A
Other languages
Japanese (ja)
Other versions
JPS6222105B2 (en
Inventor
Sho Yasuda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10583178A priority Critical patent/JPS5531962A/en
Publication of JPS5531962A publication Critical patent/JPS5531962A/en
Publication of JPS6222105B2 publication Critical patent/JPS6222105B2/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
    • 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
    • G01S7/483—Details of pulse systems
    • G01S7/486—Receivers
    • G01S7/489—Gain of receiver varied automatically during pulse-recurrence period

Landscapes

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

Abstract

PURPOSE:To increase the detection sensitivity by timingly changing the sensitivity of photo electric conversion element through the use of laser echo as trigger. CONSTITUTION:As the photo electric conversion element, the photo electric multiplier 9 is used, and it is connected to the bias power supply 10, amplifier 11, trigger detection circuit 12, ramp waveform generating circuit 13, and time difference detction circuit 14. Thus, the laser light emitted from the pulse laser unit 1 and reflected from the sea surface vertically emitted on it with the transmission optical system, is received to the photo electric multiplier 9 via the reception optical system, capacitor lens, and interference filter without attenuation. The echo signal is detected stably without excessive input state, and after amplification, it is fed to the trigger detection circuit 12, the first pulse is outputted at the time, the ramp waveform generation circuit 13 is triggered, the time difference detection circuit 14 is started, the bias voltage to the photo electric multiplier 9 is increased in ramp function, the bothe circuits 13 and 14 are reset and stopped with the echo signal after that, and the output of the circuit 14 gives water depth.
JP10583178A 1978-08-29 1978-08-29 Water depth measuring unit of laser Granted JPS5531962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10583178A JPS5531962A (en) 1978-08-29 1978-08-29 Water depth measuring unit of laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10583178A JPS5531962A (en) 1978-08-29 1978-08-29 Water depth measuring unit of laser

Publications (2)

Publication Number Publication Date
JPS5531962A true JPS5531962A (en) 1980-03-06
JPS6222105B2 JPS6222105B2 (en) 1987-05-15

Family

ID=14417987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10583178A Granted JPS5531962A (en) 1978-08-29 1978-08-29 Water depth measuring unit of laser

Country Status (1)

Country Link
JP (1) JPS5531962A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001075A1 (en) * 1980-09-22 1982-04-01 Penny M Ocean depth sounding from the air by laser beam
JPS57163975U (en) * 1981-04-09 1982-10-15
CN112986963A (en) * 2021-02-08 2021-06-18 武汉徕得智能技术有限公司 Laser pulse ranging echo signal multi-path scaling result selection control method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8617409D0 (en) * 1986-07-16 1986-08-20 Sp Tyres Uk Ltd Tyre sidewalls

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5245500A (en) * 1975-10-07 1977-04-09 Takigen Seizo Kk Mechanism for controlling angle of revolution

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5245500A (en) * 1975-10-07 1977-04-09 Takigen Seizo Kk Mechanism for controlling angle of revolution

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001075A1 (en) * 1980-09-22 1982-04-01 Penny M Ocean depth sounding from the air by laser beam
JPS57163975U (en) * 1981-04-09 1982-10-15
JPS6115172Y2 (en) * 1981-04-09 1986-05-12
CN112986963A (en) * 2021-02-08 2021-06-18 武汉徕得智能技术有限公司 Laser pulse ranging echo signal multi-path scaling result selection control method
CN112986963B (en) * 2021-02-08 2024-05-03 武汉徕得智能技术有限公司 Laser pulse ranging echo signal multipath scaling result selection control method

Also Published As

Publication number Publication date
JPS6222105B2 (en) 1987-05-15

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