CA2036124A1 - Hydroacoustic ranging system - Google Patents

Hydroacoustic ranging system

Info

Publication number
CA2036124A1
CA2036124A1 CA 2036124 CA2036124A CA2036124A1 CA 2036124 A1 CA2036124 A1 CA 2036124A1 CA 2036124 CA2036124 CA 2036124 CA 2036124 A CA2036124 A CA 2036124A CA 2036124 A1 CA2036124 A1 CA 2036124A1
Authority
CA
Canada
Prior art keywords
transducers
pulse
hydroacoustic
carrier frequencies
accurately
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
CA 2036124
Other languages
French (fr)
Other versions
CA2036124C (en
Inventor
Robert E. Rouquette
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.)
Ion Geophysical Corp
Original Assignee
Laitram LLC
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 US07/482,657 external-priority patent/US5031159A/en
Application filed by Laitram LLC filed Critical Laitram LLC
Publication of CA2036124A1 publication Critical patent/CA2036124A1/en
Application granted granted Critical
Publication of CA2036124C publication Critical patent/CA2036124C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

Digital processing systems and methods of hydroacoustic pulse communications in offshore seismic exploration systems provide more efficient surveys with less critical equipment. Thus hydroacoustic transceiver transducers towed in a set of streamers behind a vessel are accurately positioned under variable operation conditions with a geodetic reference point for more efficiently and accurately monitoring echo points for seismically identifying underwater formations. Spacings between transducers are found by calculating from pulse arrival times the transit times of hydroacoustic pulses. Predetermined pulse shapes and carrier frequencies above 40kHz are accurately determined upon receipt by digitally sampling waveshapes to determine shape and timing the reception of identified pulse shapes at transducers which are transmitted from other transducers for computing separations between sending and receiving transducers. Pulse transit time averaging avoids precise synchronization for simpler apparatus. The carrier frequencies and associated high pass filters for received pulses eliminate hydroacoustic noise. The digital pulse sampling and timing techniques simplify communications with associated data processing systems for seismic analysis and provide compact on-location electronic systems coupled to the transducers.
CA 2036124 1990-02-21 1991-02-11 Hydroacoustic ranging system Expired - Lifetime CA2036124C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/482,657 US5031159A (en) 1990-02-21 1990-02-21 Hydroacoustic ranging system
US07/482,657 1990-02-21

Publications (2)

Publication Number Publication Date
CA2036124A1 true CA2036124A1 (en) 1991-08-22
CA2036124C CA2036124C (en) 2000-05-02

Family

ID=23916913

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2036124 Expired - Lifetime CA2036124C (en) 1990-02-21 1991-02-11 Hydroacoustic ranging system

Country Status (5)

Country Link
CA (1) CA2036124C (en)
DE (1) DE69125747T2 (en)
FI (1) FI103612B (en)
NO (1) NO302720B1 (en)
NZ (1) NZ237024A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111033296A (en) * 2017-04-11 2020-04-17 波特兰州立大学 Wideband acoustic localization with accurate calibration and joint parameter estimation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG137726A1 (en) * 2006-06-06 2007-12-28 Sony Corp A method and apparatus for measuring distance between a target and a receiver in a ranging system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111033296A (en) * 2017-04-11 2020-04-17 波特兰州立大学 Wideband acoustic localization with accurate calibration and joint parameter estimation

Also Published As

Publication number Publication date
FI910838A (en) 1991-08-22
FI103612B1 (en) 1999-07-30
NO302720B1 (en) 1998-04-14
NO910659L (en) 1991-08-22
FI103612B (en) 1999-07-30
FI910838A0 (en) 1991-02-21
CA2036124C (en) 2000-05-02
NO910659D0 (en) 1991-02-19
DE69125747D1 (en) 1997-05-28
DE69125747T2 (en) 1997-10-23
NZ237024A (en) 1993-05-26

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Legal Events

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