GB8902981D0 - Sonar detector - Google Patents

Sonar detector

Info

Publication number
GB8902981D0
GB8902981D0 GB898902981A GB8902981A GB8902981D0 GB 8902981 D0 GB8902981 D0 GB 8902981D0 GB 898902981 A GB898902981 A GB 898902981A GB 8902981 A GB8902981 A GB 8902981A GB 8902981 D0 GB8902981 D0 GB 8902981D0
Authority
GB
United Kingdom
Prior art keywords
sonar detector
sonar
detector
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.)
Withdrawn
Application number
GB898902981A
Other versions
GB2242267A (en
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8902981A priority Critical patent/GB2242267A/en
Priority to FR9002738A priority patent/FR2664783A1/en
Publication of GB8902981D0 publication Critical patent/GB8902981D0/en
Publication of GB2242267A publication Critical patent/GB2242267A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
    • G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
    • G01V1/186—Hydrophones
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (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)
  • Transducers For Ultrasonic Waves (AREA)
GB8902981A 1989-02-10 1989-02-10 Sonar detector Withdrawn GB2242267A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8902981A GB2242267A (en) 1989-02-10 1989-02-10 Sonar detector
FR9002738A FR2664783A1 (en) 1989-02-10 1990-03-05 Acoustic beacon constituting a sonar detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8902981A GB2242267A (en) 1989-02-10 1989-02-10 Sonar detector

Publications (2)

Publication Number Publication Date
GB8902981D0 true GB8902981D0 (en) 1991-07-03
GB2242267A GB2242267A (en) 1991-09-25

Family

ID=10651440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8902981A Withdrawn GB2242267A (en) 1989-02-10 1989-02-10 Sonar detector

Country Status (2)

Country Link
FR (1) FR2664783A1 (en)
GB (1) GB2242267A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6563967B2 (en) 2000-01-27 2003-05-13 Northrop Grumman Corporation Fiber optic displacement sensor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383220B (en) * 1977-07-27 1987-06-10 List Hans MEASURING VALUE WITH A PIEZOELECTRIC MEASURING ELEMENT
US4193130A (en) * 1978-09-07 1980-03-11 The United States Of America As Represented By The Secretary Of The Navy Fiber optic hydrophone for use as an underwater electroacoustic standard
GB2113417A (en) * 1982-01-14 1983-08-03 Standard Telephones Cables Ltd Acousto-optical fibre transducer
GB2125957B (en) * 1982-03-18 1986-02-12 Plessey Co Plc Interferometers
US4534222A (en) * 1983-08-08 1985-08-13 Mcdonnell Douglas Corporation Fiber-optic seismic sensor
GB2147758B (en) * 1983-08-24 1987-08-05 Plessey Co Plc Optical detecting and/or measuring
DE3481449D1 (en) * 1984-09-18 1990-04-05 Western Atlas Int Inc SEA ICE MIXED PROBE.
US4799752A (en) * 1987-09-21 1989-01-24 Litton Systems, Inc. Fiber optic gradient hydrophone and method of using same
US4893930A (en) * 1988-01-25 1990-01-16 The United States Of America As Represented By The Secretary Of The Navy Multiple axis, fiber optic interferometric seismic sensor

Also Published As

Publication number Publication date
FR2664783A1 (en) 1992-01-17
GB2242267A (en) 1991-09-25

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)