WO2012007743A3 - Underwater marker - Google Patents

Underwater marker Download PDF

Info

Publication number
WO2012007743A3
WO2012007743A3 PCT/GB2011/051299 GB2011051299W WO2012007743A3 WO 2012007743 A3 WO2012007743 A3 WO 2012007743A3 GB 2011051299 W GB2011051299 W GB 2011051299W WO 2012007743 A3 WO2012007743 A3 WO 2012007743A3
Authority
WO
WIPO (PCT)
Prior art keywords
marker
shell
inclusive
cylindrical
core
Prior art date
Application number
PCT/GB2011/051299
Other languages
French (fr)
Other versions
WO2012007743A2 (en
WO2012007743A4 (en
Inventor
Carl Peter Tiltman
Andrew Malcolm Tulloch
Original Assignee
Subsea Asset Location Technologies Limited
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 GBGB1011939.4A external-priority patent/GB201011939D0/en
Priority claimed from GBGB1015563.8A external-priority patent/GB201015563D0/en
Priority claimed from GB201015952A external-priority patent/GB201015952D0/en
Priority claimed from GB201020536A external-priority patent/GB201020536D0/en
Priority claimed from GBGB1107589.2A external-priority patent/GB201107589D0/en
Application filed by Subsea Asset Location Technologies Limited filed Critical Subsea Asset Location Technologies Limited
Priority to DE112011102375T priority Critical patent/DE112011102375T5/en
Priority to GB1300349.6A priority patent/GB2494830B/en
Publication of WO2012007743A2 publication Critical patent/WO2012007743A2/en
Publication of WO2012007743A3 publication Critical patent/WO2012007743A3/en
Publication of WO2012007743A4 publication Critical patent/WO2012007743A4/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/20—Reflecting arrangements
    • G10K11/205—Reflecting arrangements for underwater use

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

A marker to mark underwater objects characterised in that it undergoes whole body resonance when exposed to an incident acoustic wave. In one arrangement the marker comprises a shell (12) surrounding a water core. In other arrangements the marker is toroidal or cylindrical or tubular in shape. Holes (20) are provided in the shell to allow water freely to enter and leave the core when the marker is immersed in water. In the case of cylindrical or tubular shells, the cylinders or tubes can be open ended to allow water freely to flow into the interior of the shell. Best results are obtained when the marker is a sphere of aluminium, aluminium alloy or brass between 200mm and 400mm inclusive in diameter with a shell wall between 6mm and 15 mm inclusive thick, operating with an interrogating sonar or other acoustic transducer at 30 to 80KHz inclusive.
PCT/GB2011/051299 2010-07-16 2011-07-11 Underwater marker WO2012007743A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112011102375T DE112011102375T5 (en) 2010-07-16 2011-07-11 Underwater marker
GB1300349.6A GB2494830B (en) 2010-07-16 2011-07-11 Underwater marker

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
GBGB1011939.4A GB201011939D0 (en) 2010-07-16 2010-07-16 Acoustic reflectors
GB1011939.4 2010-07-16
GBGB1015563.8A GB201015563D0 (en) 2010-09-17 2010-09-17 Acoustic reflectors
GB1015563.8 2010-09-17
GB201015952A GB201015952D0 (en) 2010-09-23 2010-09-23 Acoustic reflectors
GB1015952.3 2010-09-23
GB201020536A GB201020536D0 (en) 2010-12-03 2010-12-03 Underwater marker
GB1020536.7 2010-12-03
GB1107589.2 2011-05-09
GBGB1107589.2A GB201107589D0 (en) 2011-05-09 2011-05-09 Underwater marker

Publications (3)

Publication Number Publication Date
WO2012007743A2 WO2012007743A2 (en) 2012-01-19
WO2012007743A3 true WO2012007743A3 (en) 2012-08-16
WO2012007743A4 WO2012007743A4 (en) 2012-10-18

Family

ID=45443129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2011/051299 WO2012007743A2 (en) 2010-07-16 2011-07-11 Underwater marker

Country Status (3)

Country Link
DE (1) DE112011102375T5 (en)
GB (1) GB2494830B (en)
WO (1) WO2012007743A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201121116D0 (en) 2011-12-08 2012-01-18 Grenoble 2 Sas Acoustic reflectors
EP2668522B1 (en) 2011-01-25 2020-03-11 Clearwater Hydroacoustics Limited Identification, detection and positioning of underwater acoustic reflectors
GB2554765A (en) * 2016-10-10 2018-04-11 Subsea Asset Location Tech Limited Autonomous unmanned submersible vehicle docking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE439857C (en) * 1924-10-21 1927-01-20 Hans Hemmeter Tea saver egg for repeated brewing of tea etc. like
DE1934746U (en) * 1965-12-11 1966-03-17 Onno Behrends Fa Infusion container for infusion beverages.
US4176355A (en) * 1978-01-12 1979-11-27 Harris Stanley R Radiation reflecting target surface
WO2006075167A1 (en) * 2005-01-14 2006-07-20 The Secretary Of State For Defence An acoustic reflector

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1394049B1 (en) * 2009-04-16 2012-05-25 Milano Politecnico SYSTEM AND METHOD OF DETECTION FOR THE MEASUREMENT OF THE PHENOMENA OF ALTIMETRIC VARIATION OF THE MARINE FONDALS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE439857C (en) * 1924-10-21 1927-01-20 Hans Hemmeter Tea saver egg for repeated brewing of tea etc. like
DE1934746U (en) * 1965-12-11 1966-03-17 Onno Behrends Fa Infusion container for infusion beverages.
US4176355A (en) * 1978-01-12 1979-11-27 Harris Stanley R Radiation reflecting target surface
WO2006075167A1 (en) * 2005-01-14 2006-07-20 The Secretary Of State For Defence An acoustic reflector

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DON L FOLDS ET AL: "Target strength of liquid-filled spheres", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA,, vol. 73, no. 4, 1 April 1983 (1983-04-01), pages 1147 - 1151, XP001418878 *
GREGORY KADUCHAK ET AL: "Relationship Between Material Parameters and Target Strength of Fluid-Filled Spherical Shells in Water: Calculations and Observations", IEEE JOURNAL OF OCEANIC ENGINEERING, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 23, no. 1, 1 January 1998 (1998-01-01), XP011042419, ISSN: 0364-9059 *

Also Published As

Publication number Publication date
GB2494830A (en) 2013-03-20
GB2494830B (en) 2015-03-11
GB201300349D0 (en) 2013-02-20
WO2012007743A2 (en) 2012-01-19
DE112011102375T5 (en) 2013-04-25
WO2012007743A4 (en) 2012-10-18

Similar Documents

Publication Publication Date Title
WO2012007742A3 (en) Acoustic reflectors
WO2012009310A3 (en) Method and apparatus for a well employing the use of an activation ball
EP1885030A3 (en) A wire cover and an assembling method
TW200722615A (en) Fluid energy converter
WO2011041096A3 (en) Membrane-coupled ultrasonic probe system for detecting flaws in a tubular
WO2011085872A3 (en) Ultrasound transducer for use in a fluid medium
WO2006127708A3 (en) Underwater recreation apparatus and method therefor
WO2012007743A3 (en) Underwater marker
EP1949019A4 (en) Method of increasing the range of a subcalibre shell and subcalibre shells with a long range
ATE439295T1 (en) ACOUSTIC BUOY
CN208715424U (en) Hemispherical wave buoy
GB2476763B (en) Subsea gravity separator
WO2012101655A3 (en) A self actuating archimedes screw to raise seawater by harnessing wave energy
RU2010120830A (en) DEVICE FOR STATIONARY WATER TAKE-OFF IN THE BOTTOM OF THE OCEAN
WO2009099652A3 (en) End fitting for pressure vessel
CN203587172U (en) Protective cover of tidal level meter
RU152944U1 (en) MULTI-ELEMENT HYDROACOUSTIC ANTENNA FOR HYDROLOCATOR
CN204423896U (en) The underwater acoustic transducer of a kind of effective defence sea life attachment
CN204694382U (en) Ultrasonic calorimeter
CN104810013B (en) A kind of deep water low frequency compound bar coupler transducer
MY164615A (en) Acoustic reflectors
EP2172597A3 (en) Well
CN104859814A (en) Lifesaving device
WO2014087246A3 (en) Water toy with bellows
CN204061860U (en) The microcosmic pressure reduction structure of a kind of pressurized container and pressure piping

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 1300349

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20110711

WWE Wipo information: entry into national phase

Ref document number: 1300349.6

Country of ref document: GB

WWE Wipo information: entry into national phase

Ref document number: 1120111023758

Country of ref document: DE

Ref document number: 112011102375

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11804589

Country of ref document: EP

Kind code of ref document: A2