JPS5576965A - Acoustic device for fish detector - Google Patents

Acoustic device for fish detector

Info

Publication number
JPS5576965A
JPS5576965A JP15050678A JP15050678A JPS5576965A JP S5576965 A JPS5576965 A JP S5576965A JP 15050678 A JP15050678 A JP 15050678A JP 15050678 A JP15050678 A JP 15050678A JP S5576965 A JPS5576965 A JP S5576965A
Authority
JP
Japan
Prior art keywords
submarine
signal
depth
detector
gate
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
JP15050678A
Other languages
Japanese (ja)
Inventor
Shuhei Kaneoka
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.)
Koden Electronics Co Ltd
Original Assignee
Koden Electronics 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 Koden Electronics Co Ltd filed Critical Koden Electronics Co Ltd
Priority to JP15050678A priority Critical patent/JPS5576965A/en
Publication of JPS5576965A publication Critical patent/JPS5576965A/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 obtain only reflected wave signal at shallower depth than any depth on the submarine bottom and completely identify the fish on the submarine bottom by a fish detector by providing a time delay circuit corresponding to any depth in the fish detector. CONSTITUTION:The received pulse from a sound transmitter/receiver 1 is applied through a duplexer circuit 2 and a receiver 4 to a delay circuit 5. This received pulse signal is applied to an analog gate 9 after arbitrarily set delay time by a delay time controller 6. The pulse signal at the receiver 4 is also applied to a submarine detector 7 for detecting the submarine signal. A submarine gate 8 receives a transmitting timing pulse from a trnasmitting timing pulse generator 14 and the submarine signal output from the detector 7 and produces a gate signal to thereby control the gate 9. Thus, it can obtain the signal at shallower depth than any depth to operate through a modulator 10 and an amplifier 12 an electroacoustic converter 13 to thereby generate a sound.
JP15050678A 1978-12-07 1978-12-07 Acoustic device for fish detector Pending JPS5576965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15050678A JPS5576965A (en) 1978-12-07 1978-12-07 Acoustic device for fish detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15050678A JPS5576965A (en) 1978-12-07 1978-12-07 Acoustic device for fish detector

Publications (1)

Publication Number Publication Date
JPS5576965A true JPS5576965A (en) 1980-06-10

Family

ID=15498347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15050678A Pending JPS5576965A (en) 1978-12-07 1978-12-07 Acoustic device for fish detector

Country Status (1)

Country Link
JP (1) JPS5576965A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155570U (en) * 1983-04-05 1984-10-18 古野電気株式会社 Fish alarm device for fish finder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155570U (en) * 1983-04-05 1984-10-18 古野電気株式会社 Fish alarm device for fish finder

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