GB2334171B - Improvements in or relating to sound detection - Google Patents

Improvements in or relating to sound detection

Info

Publication number
GB2334171B
GB2334171B GB9900762A GB9900762A GB2334171B GB 2334171 B GB2334171 B GB 2334171B GB 9900762 A GB9900762 A GB 9900762A GB 9900762 A GB9900762 A GB 9900762A GB 2334171 B GB2334171 B GB 2334171B
Authority
GB
United Kingdom
Prior art keywords
relating
sound detection
sound
detection
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.)
Revoked
Application number
GB9900762A
Other versions
GB2334171A (en
Inventor
Roger Martin Langdon
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Electronic Systems Ltd
BAE Systems Electronics 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 GBGB9802688.3A external-priority patent/GB9802688D0/en
Application filed by Marconi Electronic Systems Ltd, BAE Systems Electronics Ltd filed Critical Marconi Electronic Systems Ltd
Priority to GB9900762A priority Critical patent/GB2334171B/en
Publication of GB2334171A publication Critical patent/GB2334171A/en
Application granted granted Critical
Publication of GB2334171B publication Critical patent/GB2334171B/en
Anticipated expiration legal-status Critical
Revoked 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • 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
    • G01H9/002—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means for representing acoustic field distribution
    • 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
    • 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB9900762A 1998-02-06 1999-01-15 Improvements in or relating to sound detection Revoked GB2334171B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9900762A GB2334171B (en) 1998-02-06 1999-01-15 Improvements in or relating to sound detection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9802688.3A GB9802688D0 (en) 1998-02-06 1998-02-06 Improvements in or relating to sound detection
GB9900762A GB2334171B (en) 1998-02-06 1999-01-15 Improvements in or relating to sound detection

Publications (2)

Publication Number Publication Date
GB2334171A GB2334171A (en) 1999-08-11
GB2334171B true GB2334171B (en) 2002-08-07

Family

ID=26313083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9900762A Revoked GB2334171B (en) 1998-02-06 1999-01-15 Improvements in or relating to sound detection

Country Status (1)

Country Link
GB (1) GB2334171B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6972400B2 (en) 2000-11-02 2005-12-06 Raytheon Company Multi-mode vibration sensor laser

Also Published As

Publication number Publication date
GB2334171A (en) 1999-08-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
773K Patent revoked under sect. 73(2)/1977

Free format text: PATENT REVOKED ON 20061027