JPS571979A - Fish amount indicator - Google Patents

Fish amount indicator

Info

Publication number
JPS571979A
JPS571979A JP7493580A JP7493580A JPS571979A JP S571979 A JPS571979 A JP S571979A JP 7493580 A JP7493580 A JP 7493580A JP 7493580 A JP7493580 A JP 7493580A JP S571979 A JPS571979 A JP S571979A
Authority
JP
Japan
Prior art keywords
picture
boundary line
echo
fish
line
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
JP7493580A
Other languages
Japanese (ja)
Other versions
JPS6222112B2 (en
Inventor
Isoichi Tanaka
Toshio Furuya
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 JP7493580A priority Critical patent/JPS571979A/en
Publication of JPS571979A publication Critical patent/JPS571979A/en
Publication of JPS6222112B2 publication Critical patent/JPS6222112B2/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/96—Sonar systems specially adapted for specific applications for locating fish

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (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 enable an unskilled operator to easily estimate a fish amount, by a method wherein the fish amount, corresponding to an optional part of an image picture, is computed, and the result is indicated togetherwith a boundary line of the applicable water area. CONSTITUTION:A plural number of time points from each start position of a main scanning signal generator and a subscanning signal generator of a raster scanning indicator in a television set and are selected to form a boundary line which can optionally change a position and an area in a picture, and a point crossing the raster scanning line and said boundary line is indicated in a particular color. A sum of products of a level and an echo of fishes in a picture surrounded with the boundary line, and an integration vaue (echo aggregate value) of a fish echo concentration correspondling to said sum of products are found, and a correction, which corresponds to picture-setting conditions, such as a mean depth at the water area surrounded with the boudary line, a range width/picture width, water speed of a transducer/image feeding speed, etc., is made to the echo aggregate value of them. The fish amount in the water area surrounded with the boundary line is computed to find a numeral value, which can be estimated, for the indication.
JP7493580A 1980-06-05 1980-06-05 Fish amount indicator Granted JPS571979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7493580A JPS571979A (en) 1980-06-05 1980-06-05 Fish amount indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7493580A JPS571979A (en) 1980-06-05 1980-06-05 Fish amount indicator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP25158886A Division JPS6290586A (en) 1986-10-24 1986-10-24 Fish finder

Publications (2)

Publication Number Publication Date
JPS571979A true JPS571979A (en) 1982-01-07
JPS6222112B2 JPS6222112B2 (en) 1987-05-15

Family

ID=13561698

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7493580A Granted JPS571979A (en) 1980-06-05 1980-06-05 Fish amount indicator

Country Status (1)

Country Link
JP (1) JPS571979A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106338734A (en) * 2015-07-06 2017-01-18 古野电气株式会社 Method of detecting school of fish, program and fish finder
CN116609786A (en) * 2023-05-22 2023-08-18 农芯(南京)智慧农业研究院有限公司 Fish counting method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977666A (en) * 1972-11-29 1974-07-26
JPS5175550A (en) * 1974-12-26 1976-06-30 Koden Electronics Co Ltd GAZOHYO JISOCHI
JPS53124946A (en) * 1977-04-08 1978-10-31 Agency Of Ind Science & Technol Operation mask unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4977666A (en) * 1972-11-29 1974-07-26
JPS5175550A (en) * 1974-12-26 1976-06-30 Koden Electronics Co Ltd GAZOHYO JISOCHI
JPS53124946A (en) * 1977-04-08 1978-10-31 Agency Of Ind Science & Technol Operation mask unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106338734A (en) * 2015-07-06 2017-01-18 古野电气株式会社 Method of detecting school of fish, program and fish finder
JP2017015645A (en) * 2015-07-06 2017-01-19 古野電気株式会社 Fish detector, program, and fish detecting method
CN116609786A (en) * 2023-05-22 2023-08-18 农芯(南京)智慧农业研究院有限公司 Fish counting method and device
CN116609786B (en) * 2023-05-22 2024-02-09 农芯(南京)智慧农业研究院有限公司 Fish counting method and device

Also Published As

Publication number Publication date
JPS6222112B2 (en) 1987-05-15

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