MY157641A - Acoustic reflectors - Google Patents

Acoustic reflectors

Info

Publication number
MY157641A
MY157641A MYPI2012000305A MYPI2012000305A MY157641A MY 157641 A MY157641 A MY 157641A MY PI2012000305 A MYPI2012000305 A MY PI2012000305A MY PI2012000305 A MYPI2012000305 A MY PI2012000305A MY 157641 A MY157641 A MY 157641A
Authority
MY
Malaysia
Prior art keywords
shell
core
signal output
reflected
acoustic signal
Prior art date
Application number
MYPI2012000305A
Inventor
Tiltman Carl Peter
Tulloch Andrew Malcolm
Holmes Carl Duncan
Original Assignee
Subsea Asset Location Tech Ltd
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 GB0913200A external-priority patent/GB0913200D0/en
Priority claimed from GB0913203A external-priority patent/GB0913203D0/en
Priority claimed from GB0913201A external-priority patent/GB0913201D0/en
Priority claimed from GB0913387A external-priority patent/GB0913387D0/en
Priority claimed from GB0913499A external-priority patent/GB0913499D0/en
Priority claimed from GB0914462A external-priority patent/GB0914462D0/en
Priority claimed from GB0917714A external-priority patent/GB0917714D0/en
Priority claimed from GBGB1001810.9A external-priority patent/GB201001810D0/en
Priority claimed from GB201006093A external-priority patent/GB201006093D0/en
Application filed by Subsea Asset Location Tech Ltd filed Critical Subsea Asset Location Tech Ltd
Publication of MY157641A publication Critical patent/MY157641A/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
    • 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
    • G01S7/537—Counter-measures or counter-counter-measures, e.g. jamming, anti-jamming

Landscapes

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

Abstract

AN ACOUSTIC REFLECTOR (10) COMPRISES A SHELL (12) SURROUNDING A CORE (16), SAID SHELL (12) BEING CAPABLE OF TRANSMITTING ACOUSTIC WAVES (18) INCIDENT ON THE SURFACE OF THE SHELL (12) INTO THE CORE (16) TO BE FOCUSED AND REFLECTED FROM AN AREA OF THE SHELL (12) LOCATED OPPOSITE TO THE AREA OF INCIDENCE SO AS TO PROVIDE A REFLECTED ACOUSTIC SIGNAL OUTPUT FROM THE REFLECTOR, HAVING A CORE (16) IN WHICH THE SHELL (12) IS DIMENSIONED RELATIVE TO THE CORE (16) SUCH THAT A PORTION OF THE ACOUSTIC WAVES (18) INCIDENT ON THE SHELL (12) WALL ARE COUPLED INTO THE SHELL (12) AND GUIDED THEREIN AROUND THE CIRCUMFERENCE OF THE SHELL (12) AND THEN RE-RADIATED TO COMBINE CONSTRUCTIVELY WITH THE SAID REFLECTED ACOUSTIC SIGNAL OUTPUT SO AS TO PROVIDE AN ENHANCED REFLECTED ACOUSTIC SIGNAL OUTPUT. THE RATIO OF THE SPEED OF SOUND WAVE TRANSMISSION IN THE SHELL (12) TO THE AVERAGE SPEED OF THE WAVE TRANSMISSION IN THE CORE (16) IS PREFERABLY IN THE RANGE OF 2.74 TO 3.4, INCLUSIVE WITH BEST RESULT IN THE RANGE OF 2.74 TO 2.86 INCLUSIVE. APPLICATIONS TO UNDERWATER PIPELINES ARE DESCRIBED, SCOURING MEASUREMENT AND ARRAYS OF REFLECTORS ARE ALSO DESCRIBED ALONG WITH NOVEL METHODS OF CONSTRUCTION OF SUCH REFLECTORS. (FIGS. 1A & 1B)
MYPI2012000305A 2009-07-29 2010-07-16 Acoustic reflectors MY157641A (en)

Applications Claiming Priority (13)

Application Number Priority Date Filing Date Title
GB0913200A GB0913200D0 (en) 2009-07-29 2009-07-29 Acoustic markers
GB0913203A GB0913203D0 (en) 2009-07-29 2009-07-29 Acoustic reflectors
GB0913201A GB0913201D0 (en) 2009-07-29 2009-07-29 Acoustic marking system
GB0913388A GB0913388D0 (en) 2009-07-29 2009-07-31 Acoustic reflectors
GB0913387A GB0913387D0 (en) 2009-07-29 2009-07-31 Acoustic marker
GB0913499A GB0913499D0 (en) 2009-08-03 2009-08-03 Air displacement energy harvesting
GB0914462A GB0914462D0 (en) 2009-08-19 2009-08-19 Acoustic scattering devices
GB0915073A GB0915073D0 (en) 2009-07-29 2009-09-01 Acoustic markers
GB0917714A GB0917714D0 (en) 2009-10-12 2009-10-12 Acoustic reflectors
GB0921397A GB0921397D0 (en) 2009-07-29 2009-12-07 Acoustic markers
GB0921399A GB0921399D0 (en) 2009-07-29 2009-12-07 Acoustic marker containment means
GBGB1001810.9A GB201001810D0 (en) 2010-02-04 2010-02-04 Acoustic reflector deployment systems
GB201006093A GB201006093D0 (en) 2010-04-13 2010-04-13 Acoustic markers

Publications (1)

Publication Number Publication Date
MY157641A true MY157641A (en) 2016-07-15

Family

ID=42985379

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI2012000305A MY157641A (en) 2009-07-29 2010-07-16 Acoustic reflectors

Country Status (1)

Country Link
MY (1) MY157641A (en)

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