JPS57119273A - Acoustic range finder - Google Patents

Acoustic range finder

Info

Publication number
JPS57119273A
JPS57119273A JP540881A JP540881A JPS57119273A JP S57119273 A JPS57119273 A JP S57119273A JP 540881 A JP540881 A JP 540881A JP 540881 A JP540881 A JP 540881A JP S57119273 A JPS57119273 A JP S57119273A
Authority
JP
Japan
Prior art keywords
amplification degree
amplifier
circuit
changes
peak
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.)
Pending
Application number
JP540881A
Other languages
Japanese (ja)
Inventor
Hideyuki Takahashi
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP540881A priority Critical patent/JPS57119273A/en
Publication of JPS57119273A publication Critical patent/JPS57119273A/en
Pending 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
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/529—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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To enable to normally perform a correct finding of a range even if a reflection efficiency changes, by controlling an amplification degree voltage control type reception amplifier according to a value just before peak from a sample hold circuit. CONSTITUTION:A reflection ultrasonic wave, received by a transmitting and receiving device, is amplified by an amplification degree voltage control type reception amplifier 15 whose amplification degree changes in reverse proportion to a change in control voltage. A part of the output of the amplifier 15 is processed by a detector 16, a peak memory 17, and a sample hold circuit 18, and a peak value is held at the circuit 18. The amplifier 15 is feedback-controlled by a hold voltage right before it passes through an integration circuit 19, a nor- mally correct acoustic range finding is performed by means of an ultrasonic wave even if a reflection efficiency at the bottom of the water changes.
JP540881A 1981-01-16 1981-01-16 Acoustic range finder Pending JPS57119273A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP540881A JPS57119273A (en) 1981-01-16 1981-01-16 Acoustic range finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP540881A JPS57119273A (en) 1981-01-16 1981-01-16 Acoustic range finder

Publications (1)

Publication Number Publication Date
JPS57119273A true JPS57119273A (en) 1982-07-24

Family

ID=11610314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP540881A Pending JPS57119273A (en) 1981-01-16 1981-01-16 Acoustic range finder

Country Status (1)

Country Link
JP (1) JPS57119273A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6390784A (en) * 1986-10-03 1988-04-21 Tokyo Keiki Co Ltd Echo level control system for guidance and assistance system for berthing
JPS6390786A (en) * 1986-10-03 1988-04-21 Tokyo Keiki Co Ltd Extremely fine signal reception system for guidance and assistance system for berthing
RU189788U1 (en) * 2019-02-11 2019-06-04 Общество с ограниченной ответственностью "КОМПСТАР" ULTRASONIC DALNOMER

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6390784A (en) * 1986-10-03 1988-04-21 Tokyo Keiki Co Ltd Echo level control system for guidance and assistance system for berthing
JPS6390786A (en) * 1986-10-03 1988-04-21 Tokyo Keiki Co Ltd Extremely fine signal reception system for guidance and assistance system for berthing
JPH0431551B2 (en) * 1986-10-03 1992-05-26
JPH0431550B2 (en) * 1986-10-03 1992-05-26
RU189788U1 (en) * 2019-02-11 2019-06-04 Общество с ограниченной ответственностью "КОМПСТАР" ULTRASONIC DALNOMER

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