JPS55113973A - Fish detector for dragnet - Google Patents

Fish detector for dragnet

Info

Publication number
JPS55113973A
JPS55113973A JP2136779A JP2136779A JPS55113973A JP S55113973 A JPS55113973 A JP S55113973A JP 2136779 A JP2136779 A JP 2136779A JP 2136779 A JP2136779 A JP 2136779A JP S55113973 A JPS55113973 A JP S55113973A
Authority
JP
Japan
Prior art keywords
marine bottom
time
gain
ground rope
receiver
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
JP2136779A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6238667B2 (enrdf_load_stackoverflow
Inventor
Fukutaro Takahashi
Kyozo Yamatani
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.)
Kaijo Denki Co Ltd
Marine Instr Co Ltd
Original Assignee
Kaijo Denki Co Ltd
Marine Instr 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 Kaijo Denki Co Ltd, Marine Instr Co Ltd filed Critical Kaijo Denki Co Ltd
Priority to JP2136779A priority Critical patent/JPS55113973A/ja
Publication of JPS55113973A publication Critical patent/JPS55113973A/ja
Publication of JPS6238667B2 publication Critical patent/JPS6238667B2/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
    • G01S7/52—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
    • G01S7/527—Extracting wanted echo signals

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)
JP2136779A 1979-02-27 1979-02-27 Fish detector for dragnet Granted JPS55113973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2136779A JPS55113973A (en) 1979-02-27 1979-02-27 Fish detector for dragnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2136779A JPS55113973A (en) 1979-02-27 1979-02-27 Fish detector for dragnet

Publications (2)

Publication Number Publication Date
JPS55113973A true JPS55113973A (en) 1980-09-02
JPS6238667B2 JPS6238667B2 (enrdf_load_stackoverflow) 1987-08-19

Family

ID=12053116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2136779A Granted JPS55113973A (en) 1979-02-27 1979-02-27 Fish detector for dragnet

Country Status (1)

Country Link
JP (1) JPS55113973A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160879A (ja) * 1982-03-18 1983-09-24 Marine Instr Co Ltd 底質判別装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58160879A (ja) * 1982-03-18 1983-09-24 Marine Instr Co Ltd 底質判別装置

Also Published As

Publication number Publication date
JPS6238667B2 (enrdf_load_stackoverflow) 1987-08-19

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