EA200800748A1 - Построение акустических изображений путем нелинейного низкочастотного управления свойствами высокочастотного рассеяния и распространения - Google Patents

Построение акустических изображений путем нелинейного низкочастотного управления свойствами высокочастотного рассеяния и распространения

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Publication number
EA200800748A1
EA200800748A1 EA200800748A EA200800748A EA200800748A1 EA 200800748 A1 EA200800748 A1 EA 200800748A1 EA 200800748 A EA200800748 A EA 200800748A EA 200800748 A EA200800748 A EA 200800748A EA 200800748 A1 EA200800748 A1 EA 200800748A1
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EA
Eurasian Patent Office
Prior art keywords
frequency
pulses
images
acoustic
methods
Prior art date
Application number
EA200800748A
Other languages
English (en)
Other versions
EA014167B1 (ru
Inventor
Бьорн А. Й. Ангельсен
Руне Хансен
Эйвинд Стандаль
Original Assignee
Бьорн А. Й. Ангельсен
Руне Хансен
Эйвинд Стандаль
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Application filed by Бьорн А. Й. Ангельсен, Руне Хансен, Эйвинд Стандаль filed Critical Бьорн А. Й. Ангельсен
Publication of EA200800748A1 publication Critical patent/EA200800748A1/ru
Publication of EA014167B1 publication Critical patent/EA014167B1/ru

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
    • 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
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/895—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum
    • G01S15/8952—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum using discrete, multiple frequencies
    • 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
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52019—Details of transmitters
    • G01S7/5202—Details of transmitters for pulse systems
    • G01S7/52022—Details of transmitters for pulse systems using a sequence of pulses, at least one pulse manipulating the transmissivity or reflexivity of the medium
    • 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
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52023—Details of receivers
    • G01S7/52036—Details of receivers using analysis of echo signal for target characterisation
    • G01S7/52038—Details of receivers using analysis of echo signal for target characterisation involving non-linear properties of the propagation medium or of the reflective target
    • 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
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52046—Techniques for image enhancement involving transmitter or receiver
    • G01S7/52049—Techniques for image enhancement involving transmitter or receiver using correction of medium-induced phase aberration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/48—Diagnostic techniques
    • A61B8/485—Diagnostic techniques involving measuring strain or elastic properties
    • 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
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • 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
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52077—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging with means for elimination of unwanted signals, e.g. noise or interference
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/50—Corrections or adjustments related to wave propagation
    • G01V2210/56—De-ghosting; Reverberation compensation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V2210/00—Details of seismic processing or analysis
    • G01V2210/50—Corrections or adjustments related to wave propagation
    • G01V2210/58—Media-related

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Acoustics & Sound (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nonlinear Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

Представлен новый способ построения акустических изображений, который обеспечивает получение изображений с сниженным шумом реверберации, получение изображений параметров нелинейного рассеяния и распространения от объекта, а также способы определения коррекций для аберраций волнового фронта, вызванных пространственными изменениями акустической скорости распространения. Эти способы нашли применение в различных областях, таких как акустические изображения геологических структур, получение изображений подводных объектов с помощью гидролокации, а также в получении медицинских ультразвуковых изображений. Способы основаны на обработке принятых сигналов от излученных групп акустических импульсов в двухполосном частотном диапазоне с перекрывающимися высокочастотными и низкочастотными импульсами. Высокочастотный импульс используется для реконструкции изображения, тогда как низкочастотный импульс используется для управления свойствами высокочастотного рассеяния и/или распространения высокочастотного импульса. 1-ый способ использует рассеянный сигнал от одиночной группы импульсов в двухполосном частотном диапазоне для фильтрации в области «быстрого времени» (времени глубины) для построения сигнала с подавленным шумом реверберации, с чувствительностью 1-ой гармоники и улучшенной пространственной разрешимостью. В других способах излучают две или более двух групп импульсов в двухполосном частотном диапазоне, в которых частота, и/или фаза, и/или амплитуда низкочастотного импульса изменяется с каждой излученной группой импульсов. Путем фильтрации координаты номера импульса и корректировки
EA200800748A 2005-09-08 2005-09-08 Способ построения изображения акустических свойств путем нелинейного низкочастотного управления свойствами высокочастотного рассеяния и распространения (варианты) и акустическое устройство для осуществления этого способа EA014167B1 (ru)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NO2005/000323 WO2007030016A1 (en) 2005-09-08 2005-09-08 Acoustic imaging by nonlinear low frequency manipulation of high frequency scattering and propagation properties

Publications (2)

Publication Number Publication Date
EA200800748A1 true EA200800748A1 (ru) 2008-08-29
EA014167B1 EA014167B1 (ru) 2010-10-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EA200800748A EA014167B1 (ru) 2005-09-08 2005-09-08 Способ построения изображения акустических свойств путем нелинейного низкочастотного управления свойствами высокочастотного рассеяния и распространения (варианты) и акустическое устройство для осуществления этого способа

Country Status (3)

Country Link
BR (1) BRPI0520533A2 (ru)
EA (1) EA014167B1 (ru)
WO (1) WO2007030016A1 (ru)

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Publication number Publication date
BRPI0520533A2 (pt) 2009-10-06
EA014167B1 (ru) 2010-10-29
WO2007030016A1 (en) 2007-03-15

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