JPS55126871A - Sounding machine - Google Patents

Sounding machine

Info

Publication number
JPS55126871A
JPS55126871A JP3530479A JP3530479A JPS55126871A JP S55126871 A JPS55126871 A JP S55126871A JP 3530479 A JP3530479 A JP 3530479A JP 3530479 A JP3530479 A JP 3530479A JP S55126871 A JPS55126871 A JP S55126871A
Authority
JP
Japan
Prior art keywords
time
gate
reception
signal
transmitter
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
JP3530479A
Other languages
Japanese (ja)
Inventor
Masao Kawamura
Masuo Fukuda
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 JP3530479A priority Critical patent/JPS55126871A/en
Publication of JPS55126871A publication Critical patent/JPS55126871A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/101—Particularities of the measurement of distance

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To remove a multipath-reflected signal by storing the time from the emission of an acoustic wave until the reception of it and by closing the gate of a reception system at the point in time an integer greater than it. CONSTITUTION:A transmitted pulse, generated by transmission part 56, is sent to transmitter-receiver part 51 by way of duplexing part 52, and then emitted. At the same time, a time measurement instruction is sent out from transmission part 56 to time setting part 57. The 1st subaquatic reflected wave is amplified by reception part 54 by way of transmitter-receiver 51, duplexer 52 and gate part 53 and then recorded in recording part 55. This signal is stored in memory part 58. During the period of time an integer greater than the time needed to obtain the signal stored in this memory part 58, gate part 53 is closed to remove multipath reflection.
JP3530479A 1979-03-26 1979-03-26 Sounding machine Pending JPS55126871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3530479A JPS55126871A (en) 1979-03-26 1979-03-26 Sounding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3530479A JPS55126871A (en) 1979-03-26 1979-03-26 Sounding machine

Publications (1)

Publication Number Publication Date
JPS55126871A true JPS55126871A (en) 1980-10-01

Family

ID=12438035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3530479A Pending JPS55126871A (en) 1979-03-26 1979-03-26 Sounding machine

Country Status (1)

Country Link
JP (1) JPS55126871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184577A (en) * 1984-10-02 1986-04-30 Furuno Electric Co Ltd Ultrasonic wave detection and display device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51139370A (en) * 1975-05-27 1976-12-01 Omron Tateisi Electronics Co Reflection-type ultrasonic object detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51139370A (en) * 1975-05-27 1976-12-01 Omron Tateisi Electronics Co Reflection-type ultrasonic object detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6184577A (en) * 1984-10-02 1986-04-30 Furuno Electric Co Ltd Ultrasonic wave detection and display device
JPH0432995B2 (en) * 1984-10-02 1992-06-01 Furuno Electric Co

Similar Documents

Publication Publication Date Title
JPS55126871A (en) Sounding machine
GB2001499B (en) Device for suppressing very close interference echo signals in optical pulse compression radars
JPS532983A (en) Ultrasonic image receiver operated by pulse echo method
JPS56153267A (en) Distance measuring device using ultrasonic wave
JPS532982A (en) Ultrasonic image receiver operated by pulse echo method
GB1489013A (en) Propagation delay meter
IT8024423A0 (en) DEVICE FOR DETERMINING THE INSTANT OF RECEPTION OF AN ACOUSTIC WAVE.
JPS55138672A (en) Fish detector for seining
JPS573041A (en) Ultrasonic flaw detector
JPS5249792A (en) Radar apparatus
JPS56160672A (en) Sea bottom signal sensor of sea depth sounding device
JPS5618777A (en) Range measuring apparatus
JPS5576965A (en) Acoustic device for fish detector
JPS578882A (en) Position detecting device
JPS643582A (en) Ultrasonic range finder
JPS5316A (en) Repeater
JPS5496065A (en) Distance measuring method
LEE Ultrasonic biomedical measuring and recording apparatus(for recording motion of internal organs such as heart valves)[Patent]
JPS57187674A (en) Reflection finder
JPS5460596A (en) Ultrasonic vehicle sensor
JPS55101877A (en) Reflection type ultrasonic detector
JPS5672372A (en) Sound depth meter
JPS56125620A (en) Current measuring device
JPS6443781A (en) Radar signal processor
JPS56165485A (en) Ultrasonic wave probe