GB2298276B - Sonic or geophonic signal bearing determining apparatus - Google Patents

Sonic or geophonic signal bearing determining apparatus

Info

Publication number
GB2298276B
GB2298276B GB8103009A GB8103009A GB2298276B GB 2298276 B GB2298276 B GB 2298276B GB 8103009 A GB8103009 A GB 8103009A GB 8103009 A GB8103009 A GB 8103009A GB 2298276 B GB2298276 B GB 2298276B
Authority
GB
United Kingdom
Prior art keywords
geophonic
sonic
signal bearing
determining apparatus
bearing determining
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.)
Expired - Lifetime
Application number
GB8103009A
Other versions
GB8103009D0 (en
GB2298276A (en
Inventor
Michael Laurence Henning
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
BAE Systems Electronics Ltd
Original Assignee
GEC Marconi Ltd
Plessey Co Ltd
Marconi 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 GEC Marconi Ltd, Plessey Co Ltd, Marconi Co Ltd filed Critical GEC Marconi Ltd
Priority to GB8103009A priority Critical patent/GB2298276B/en
Publication of GB8103009D0 publication Critical patent/GB8103009D0/en
Publication of GB2298276A publication Critical patent/GB2298276A/en
Application granted granted Critical
Publication of GB2298276B publication Critical patent/GB2298276B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/80—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction
    • G01S3/808—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/8083—Systems for determining direction or deviation from predetermined direction using transducers spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems determining direction of source

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB8103009A 1981-02-03 1981-02-03 Sonic or geophonic signal bearing determining apparatus Expired - Lifetime GB2298276B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8103009A GB2298276B (en) 1981-02-03 1981-02-03 Sonic or geophonic signal bearing determining apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8103009A GB2298276B (en) 1981-02-03 1981-02-03 Sonic or geophonic signal bearing determining apparatus

Publications (3)

Publication Number Publication Date
GB8103009D0 GB8103009D0 (en) 1996-04-24
GB2298276A GB2298276A (en) 1996-08-28
GB2298276B true GB2298276B (en) 1997-01-08

Family

ID=10519369

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8103009A Expired - Lifetime GB2298276B (en) 1981-02-03 1981-02-03 Sonic or geophonic signal bearing determining apparatus

Country Status (1)

Country Link
GB (1) GB2298276B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2656112A2 (en) * 2010-12-21 2013-10-30 Shell Internationale Research Maatschappij B.V. Detecting the direction of acoustic signals with a fiber optical distributed acoustic sensing (das) assembly

Also Published As

Publication number Publication date
GB8103009D0 (en) 1996-04-24
GB2298276A (en) 1996-08-28

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Legal Events

Date Code Title Description
730 Substitution of applicants allowed (sect. 30/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20010202