JPS57189081A - Search device for amount of resources - Google Patents

Search device for amount of resources

Info

Publication number
JPS57189081A
JPS57189081A JP56074033A JP7403381A JPS57189081A JP S57189081 A JPS57189081 A JP S57189081A JP 56074033 A JP56074033 A JP 56074033A JP 7403381 A JP7403381 A JP 7403381A JP S57189081 A JPS57189081 A JP S57189081A
Authority
JP
Japan
Prior art keywords
circuit
mean
scatter intensity
receiver
finds
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
JP56074033A
Other languages
Japanese (ja)
Other versions
JPS6312544B2 (en
Inventor
Hidehiro Hakushiyoku
Hiroshi Iino
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.)
Furuno Electric Co Ltd
Original Assignee
Furuno 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 Furuno Electric Co Ltd filed Critical Furuno Electric Co Ltd
Priority to JP56074033A priority Critical patent/JPS57189081A/en
Publication of JPS57189081A publication Critical patent/JPS57189081A/en
Publication of JPS6312544B2 publication Critical patent/JPS6312544B2/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 continuously grasp variation in mean distribution of the amount of resources by providing a scatter intensity arithmetic means with a means which finds the mean of a distribution of scatter intensity for every ultrasonic wave emission within the movement range of an ultrasonic wave emitting device from a reference position according to the movement of the device. CONSTITUTION:A transmitter 2 and a receiver 3 are connected to an ultrasonic wave receiver 1, and the receiver 3 is equipped with a TVG voltage generator. The output of the receiver 3 is squared by a squaring circuit 4, whose output is operated by a correcting circuit 5 to find scatter intensity SV. A horizontal integrating circuit 6 integrates the intensity SV from a reference position to a current position, and supplies the result to a mean scatter intensity arithmetic circuit 7. This circuit 7 consists of a section arithmetic circuit 70 which finds the mean scatter intensity of every section and a continuous arithmetic circuit 71 which finds mean scatter intensity between the reference position and the current position successively. A CRT8 as a display device regards the output of the circuit 70 as (a) and that of the circuit 71 as (b) to perform graph display.
JP56074033A 1981-05-15 1981-05-15 Search device for amount of resources Granted JPS57189081A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56074033A JPS57189081A (en) 1981-05-15 1981-05-15 Search device for amount of resources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56074033A JPS57189081A (en) 1981-05-15 1981-05-15 Search device for amount of resources

Publications (2)

Publication Number Publication Date
JPS57189081A true JPS57189081A (en) 1982-11-20
JPS6312544B2 JPS6312544B2 (en) 1988-03-19

Family

ID=13535425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56074033A Granted JPS57189081A (en) 1981-05-15 1981-05-15 Search device for amount of resources

Country Status (1)

Country Link
JP (1) JPS57189081A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59220668A (en) * 1983-05-30 1984-12-12 Japan Radio Co Ltd Remote measuring and display system of school of fish
JP2012026855A (en) * 2010-07-23 2012-02-09 Furuno Electric Co Ltd Hydrospace detection apparatus, fish shoal detection apparatus, hydrospace detection method, and fish shoal detection method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011203123A (en) * 2010-03-25 2011-10-13 Japan Radio Co Ltd Three-dimensional survey device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5016168A (en) * 1973-06-13 1975-02-20
JPS51151584A (en) * 1975-06-20 1976-12-27 Zenkoku Gyogyo Kiyousaikumiai Rengokai Measuring method for number of fish

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5016168A (en) * 1973-06-13 1975-02-20
JPS51151584A (en) * 1975-06-20 1976-12-27 Zenkoku Gyogyo Kiyousaikumiai Rengokai Measuring method for number of fish

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59220668A (en) * 1983-05-30 1984-12-12 Japan Radio Co Ltd Remote measuring and display system of school of fish
JP2012026855A (en) * 2010-07-23 2012-02-09 Furuno Electric Co Ltd Hydrospace detection apparatus, fish shoal detection apparatus, hydrospace detection method, and fish shoal detection method

Also Published As

Publication number Publication date
JPS6312544B2 (en) 1988-03-19

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