FR3095048B1 - SONAR IMAGE PROCESSING APPARATUS, SONAR IMAGE PROCESSING METHOD AND PROGRAM - Google Patents

SONAR IMAGE PROCESSING APPARATUS, SONAR IMAGE PROCESSING METHOD AND PROGRAM Download PDF

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Publication number
FR3095048B1
FR3095048B1 FR2003291A FR2003291A FR3095048B1 FR 3095048 B1 FR3095048 B1 FR 3095048B1 FR 2003291 A FR2003291 A FR 2003291A FR 2003291 A FR2003291 A FR 2003291A FR 3095048 B1 FR3095048 B1 FR 3095048B1
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France
Prior art keywords
images
sonar
image processing
point
unit
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FR2003291A
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French (fr)
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FR3095048A1 (en
Inventor
Yoshiyuki Nakamura
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NEC Corp
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NEC Corp
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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
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8902—Side-looking sonar
    • G01S15/8904—Side-looking sonar using synthetic aperture techniques
    • 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
    • G01S7/52004—Means for monitoring or calibrating

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

Appareil de traitement d’image sonar (10) comprenant une unité d’acquisition de données (11) pour acquérir une pluralité de données de sonar dans une pluralité de directions d’inclinaison et une vitesse mesurée du son dans l’eau, une unité de traitement d’image (12) pour convertir la pluralité de données de sonar en images en utilisant la vitesse mesurée du son dans l’eau et créer de ce fait une pluralité d’images sonar, une unité de détection d’image ponctuelle (13) pour détecter une image ponctuelle dans chacune de la pluralité d’images sonar, une unité d’extraction d’image ponctuelle (14) pour extraire une paire d’images ponctuelles positionnées sensiblement à la même position à travers la pluralité d’images sonar parmi les images ponctuelles détectées, et une unité d’estimation de vitesse du son (15) pour calculer une différence entre des coordonnées de distance-azimut de la paire d’images ponctuelles et estimer une vitesse corrigée du son dans l’eau pour laquelle la différence est minimisée.A sonar image processing apparatus (10) comprising a data acquisition unit (11) for acquiring a plurality of sonar data in a plurality of tilt directions and a measured speed of sound in water, a unit an image processing unit (12) for converting the plurality of sonar data into images using the measured speed of sound in water and thereby creating a plurality of sonar images, a point image detection unit ( 13) for detecting a point image in each of the plurality of sonar images, a point image extraction unit (14) for extracting a pair of point images positioned at substantially the same position across the plurality of images sonar among the detected point images, and a sound velocity estimating unit (15) for calculating a difference between range-azimuth coordinates of the pair of point images and estimating a corrected water sound velocity for which the difference is minimized.

FR2003291A 2019-04-12 2020-04-02 SONAR IMAGE PROCESSING APPARATUS, SONAR IMAGE PROCESSING METHOD AND PROGRAM Active FR3095048B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-076326 2019-04-12
JP2019076326A JP7259503B2 (en) 2019-04-12 2019-04-12 Sonar image processing device, sonar image processing method and program

Publications (2)

Publication Number Publication Date
FR3095048A1 FR3095048A1 (en) 2020-10-16
FR3095048B1 true FR3095048B1 (en) 2022-07-08

Family

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Family Applications (1)

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FR2003291A Active FR3095048B1 (en) 2019-04-12 2020-04-02 SONAR IMAGE PROCESSING APPARATUS, SONAR IMAGE PROCESSING METHOD AND PROGRAM

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JP (1) JP7259503B2 (en)
FR (1) FR3095048B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114910915A (en) * 2021-02-08 2022-08-16 中国科学院声学研究所 Multi-mode imaging method for underwater target of side scan sonar

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59212791A (en) * 1983-05-19 1984-12-01 Yokogawa Medical Syst Ltd Ultrasonic imaging system
JP3401374B2 (en) * 1995-11-06 2003-04-28 株式会社カイジョー Sound velocity correction method for underwater position measurement system
JP2010127771A (en) 2008-11-27 2010-06-10 Nec Corp Synthetic aperture sonar, and method and program for correcting phase error of synthetic aperture sonar
JP6292772B2 (en) 2013-06-05 2018-03-14 三菱電機株式会社 Radar image processing apparatus and radar image processing method

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Publication number Publication date
FR3095048A1 (en) 2020-10-16
JP7259503B2 (en) 2023-04-18
JP2020173213A (en) 2020-10-22

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