GB2252628A - Underwater profile detector device - Google Patents

Underwater profile detector device

Info

Publication number
GB2252628A
GB2252628A GB9207497A GB9207497A GB2252628A GB 2252628 A GB2252628 A GB 2252628A GB 9207497 A GB9207497 A GB 9207497A GB 9207497 A GB9207497 A GB 9207497A GB 2252628 A GB2252628 A GB 2252628A
Authority
GB
United Kingdom
Prior art keywords
profile
target
signal
underwater
scanning head
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
GB9207497A
Other versions
GB2252628B (en
GB9207497D0 (en
Inventor
Christopher Andrew Edwards
Hugh Beatty Braithwaite
Stephen Peter Crotch-Harvey
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.)
ULVERTECH Ltd
Original Assignee
ULVERTECH 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
Application filed by ULVERTECH Ltd filed Critical ULVERTECH Ltd
Publication of GB9207497D0 publication Critical patent/GB9207497D0/en
Publication of GB2252628A publication Critical patent/GB2252628A/en
Application granted granted Critical
Publication of GB2252628B publication Critical patent/GB2252628B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
    • G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
    • G10K11/355—Arcuate movement
    • 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
    • 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
    • G01S7/521—Constructional features

Abstract

There is disclosed an underwater profile detection system for monitoring the profile of an underwater target, such as a trench (11) in the seabed (10) and which comprises a set of underwater scanners (15) operable to direct acoustic signals towards the target (11) and to receive reflected signals from the target in order to monitor the profile thereof, and a remote electronic monitoring station (16) connectable via an umbilical (13) to the scanners (15) and operable to process signals received from the scanners and to derive therefrom a display on a screen (17) which is representative of the profile which is undergoing scanning. Each scanner (15) comprises a waterproof housing (18) divided into first and second compartments (19, 20), an acoustic scanning head (21) pivotally mounted on one end of the housing (18) and arranged to emit an acoustic profile detection signal towards the target (11) whose profile is to be monitored, to receive the signal reflected from the target, and to translate this into a signal which is representative of the profile of the target; an electronic processing unit mounted in the first compartment (19) and connected to the scanning head (21) so as to be able to receive the profile signal and to process the profile signal for onward transmission via the umbilical (13) to the remote electronic monitoring station (16); and a drive unit mounted in the second compartment (20) and coupled with the scanning head (21) so as to advance the head through predetermined angular increments at each of which profile detection signals are transmitted. The scanning head (21) comprises two separate substantially planar acoustic transducers (22) which are capable of issuing profile detection signals simultaneously, and which are adjustable together as a unit between different angular settings under the control of the drive unit, and which are enclosed by an acoustically transparent oil filled enclosure dome (23). <IMAGE>
GB9207497A 1989-10-04 1992-04-06 Underwater profile detector device Expired - Fee Related GB2252628B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898922324A GB8922324D0 (en) 1989-10-04 1989-10-04 Underwater profile detector device
PCT/GB1990/001512 WO1991005268A1 (en) 1989-10-04 1990-10-03 Underwater profile detector device

Publications (3)

Publication Number Publication Date
GB9207497D0 GB9207497D0 (en) 1992-06-03
GB2252628A true GB2252628A (en) 1992-08-12
GB2252628B GB2252628B (en) 1994-04-13

Family

ID=10664017

Family Applications (2)

Application Number Title Priority Date Filing Date
GB898922324A Pending GB8922324D0 (en) 1989-10-04 1989-10-04 Underwater profile detector device
GB9207497A Expired - Fee Related GB2252628B (en) 1989-10-04 1992-04-06 Underwater profile detector device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB898922324A Pending GB8922324D0 (en) 1989-10-04 1989-10-04 Underwater profile detector device

Country Status (4)

Country Link
AU (1) AU6508090A (en)
CA (1) CA2067130A1 (en)
GB (2) GB8922324D0 (en)
WO (1) WO1991005268A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5309408A (en) * 1993-03-01 1994-05-03 Raytheon Company Sonar system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832944A (en) * 1945-10-01 1958-04-29 Gen Electric Stabilized mounting for underwater sound apparatus
DE1220149B (en) * 1959-11-16 1966-06-30 Dr Siegfried Fahrentholz Echosounder device for surveying waterways
DE3219487A1 (en) * 1982-05-25 1983-12-01 Honeywell-Elac-Nautik Gmbh, 2300 Kiel Method for locating objects, particularly ground mines, on the bottom of waters
GB2128331A (en) * 1982-09-30 1984-04-26 Krupp Gmbh Acoustic underwater antenna with synthetic aperture
EP0157408A2 (en) * 1984-04-02 1985-10-09 Advanced Technology Laboratories, Inc. Fully wetted mechanical ultrasound scanhead

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832944A (en) * 1945-10-01 1958-04-29 Gen Electric Stabilized mounting for underwater sound apparatus
DE1220149B (en) * 1959-11-16 1966-06-30 Dr Siegfried Fahrentholz Echosounder device for surveying waterways
DE3219487A1 (en) * 1982-05-25 1983-12-01 Honeywell-Elac-Nautik Gmbh, 2300 Kiel Method for locating objects, particularly ground mines, on the bottom of waters
GB2128331A (en) * 1982-09-30 1984-04-26 Krupp Gmbh Acoustic underwater antenna with synthetic aperture
EP0157408A2 (en) * 1984-04-02 1985-10-09 Advanced Technology Laboratories, Inc. Fully wetted mechanical ultrasound scanhead

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE JOURNAL OF OCEANIC ENGINEERING.vol.OE-11.no.4.Oct.86. P.474-9;m.Okino et.al. *
OCEAN ENGINEERING AND THE ENVIRONMENT-CONFERENCE RECORD:vol.2/2.14.Nov.85.p.682-5.E.H.Hammerstad. *

Also Published As

Publication number Publication date
GB2252628B (en) 1994-04-13
WO1991005268A1 (en) 1991-04-18
GB8922324D0 (en) 1989-11-22
GB9207497D0 (en) 1992-06-03
AU6508090A (en) 1991-04-28
CA2067130A1 (en) 1991-04-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19951003