NO20003543L - FremgangsmÕte ved fiskedeteksjon fra sonardata - Google Patents

FremgangsmÕte ved fiskedeteksjon fra sonardata

Info

Publication number
NO20003543L
NO20003543L NO20003543A NO20003543A NO20003543L NO 20003543 L NO20003543 L NO 20003543L NO 20003543 A NO20003543 A NO 20003543A NO 20003543 A NO20003543 A NO 20003543A NO 20003543 L NO20003543 L NO 20003543L
Authority
NO
Norway
Prior art keywords
procedure
constitutes
dimension
sonar
sonar data
Prior art date
Application number
NO20003543A
Other languages
English (en)
Other versions
NO20003543D0 (no
Inventor
Helge Balk
Torfinn Lindem
Original Assignee
Helge Balk
Torfinn Lindem
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
Priority claimed from NO994327A external-priority patent/NO994327D0/no
Application filed by Helge Balk, Torfinn Lindem filed Critical Helge Balk
Priority to NO20003543A priority Critical patent/NO20003543L/no
Publication of NO20003543D0 publication Critical patent/NO20003543D0/no
Priority to CA002383760A priority patent/CA2383760A1/en
Priority to PCT/NO2000/000288 priority patent/WO2001018562A1/en
Priority to AU70432/00A priority patent/AU7043200A/en
Priority to EP00959043A priority patent/EP1210618A1/en
Publication of NO20003543L publication Critical patent/NO20003543L/no
Priority to NO20021069A priority patent/NO20021069L/no

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
    • 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
    • G01S15/46—Indirect determination of position data
    • 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
    • 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
    • G01S7/539—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section

Landscapes

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

Abstract

Oppfinnelsen angår en fremgangsmåte til deteksjon av objekter, fortrinnsvis fisk, fra sonardata. Ekkosignaler fra gjentatte sonarmålinger digitaliseres og registreres i en todimensjonal dataoppstilling der ekkoavstand, alternativt signalets gangtid, utgjør en dimensjon og målingsnummeret, alternativt målingstidspunktet, utgjør den andre dimensjonen. Ved ønsket størrelse av dataoppstillingen utføres todimensjonal filtrering, adaptiv terskling og morfologisk behandling slik at det kan fremstilles et ekkogram med mindre støy og sikrere påvisning av ønskede objekter. Ytterligere formanalyse forbedrer påvisningen ytterligere.
NO20003543A 1999-09-06 2000-07-10 FremgangsmÕte ved fiskedeteksjon fra sonardata NO20003543L (no)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NO20003543A NO20003543L (no) 1999-09-06 2000-07-10 FremgangsmÕte ved fiskedeteksjon fra sonardata
CA002383760A CA2383760A1 (en) 1999-09-06 2000-09-05 Fish detection method using sonar data
PCT/NO2000/000288 WO2001018562A1 (en) 1999-09-06 2000-09-05 Fish detection method using sonar data
AU70432/00A AU7043200A (en) 1999-09-06 2000-09-05 Fish detection method using sonar data
EP00959043A EP1210618A1 (en) 1999-09-06 2000-09-05 Fish detection method using sonar data
NO20021069A NO20021069L (no) 1999-09-06 2002-03-04 Fremgangsmåte ved fiskedeteksjon fra sonardata

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO994327A NO994327D0 (no) 1999-09-06 1999-09-06 Forbedret fiskedeteksjonssannsynlighet i data fra sonar med delt strÕle
NO20003543A NO20003543L (no) 1999-09-06 2000-07-10 FremgangsmÕte ved fiskedeteksjon fra sonardata

Publications (2)

Publication Number Publication Date
NO20003543D0 NO20003543D0 (no) 2000-07-10
NO20003543L true NO20003543L (no) 2001-03-07

Family

ID=26648997

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20003543A NO20003543L (no) 1999-09-06 2000-07-10 FremgangsmÕte ved fiskedeteksjon fra sonardata

Country Status (5)

Country Link
EP (1) EP1210618A1 (no)
AU (1) AU7043200A (no)
CA (1) CA2383760A1 (no)
NO (1) NO20003543L (no)
WO (1) WO2001018562A1 (no)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093546A1 (en) * 2008-02-22 2009-08-26 Siemens Milltronics Process Instruments Inc. A method for locating a wanted echo from unwanted echoes in a time-of-flight level measurement system
US8164983B2 (en) 2009-03-06 2012-04-24 Johnson David A Fish finder
DE102012007979A1 (de) * 2012-04-24 2013-10-24 Krohne Messtechnik Gmbh Verfahren zur Bestimmung des Füllstandes eines Mediums und entsprechende Vorrichtung
GB2523561B (en) * 2014-02-27 2016-03-02 Sonardyne Internat Ltd Underwater Environment Reference Map Enhancement and Intruder Detection
CN106019263B (zh) * 2016-07-13 2018-03-20 东南大学 基于多亮点回波模型的目标径向速度测量方法
EP3579020B1 (de) * 2018-06-05 2021-03-31 Elmos Semiconductor SE Verfahren zur erkennung eines hindernisses mit hilfe von reflektierten ultraschallwellen
CN113484867B (zh) * 2021-06-25 2023-10-20 山东航天电子技术研究所 一种基于成像声呐封闭空间下鱼群密度探测方法
US12205302B2 (en) * 2022-02-02 2025-01-21 InnovaSea Marine Systems Canada Inc. Fine-scale movement tracking of underwater objects
CN114814801B (zh) * 2022-05-05 2025-06-20 青岛海洋科技中心 一种提高渔用声呐图像目标分辨率的方法
CN119846612B (zh) * 2024-12-23 2025-11-28 上海船舶电子设备研究所(中国船舶集团有限公司第七二六研究所) 多波束声呐目标探测与成像方法及系统
CN119380725B (zh) * 2024-12-30 2025-03-18 自然资源部第二海洋研究所 一种基于单通道水听器的发声鱼类声信号识别方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074264A (en) * 1976-01-07 1978-02-14 Hughes Aircraft Company Adaptive threshold clutter processor
US5930200A (en) * 1998-05-08 1999-07-27 Garmin Corporation Depth sounder with object identification feature

Also Published As

Publication number Publication date
EP1210618A1 (en) 2002-06-05
NO20003543D0 (no) 2000-07-10
AU7043200A (en) 2001-04-10
CA2383760A1 (en) 2001-03-15
WO2001018562A1 (en) 2001-03-15

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