GB2111679B - Sonar intruder detectors - Google Patents

Sonar intruder detectors

Info

Publication number
GB2111679B
GB2111679B GB08131584A GB8131584A GB2111679B GB 2111679 B GB2111679 B GB 2111679B GB 08131584 A GB08131584 A GB 08131584A GB 8131584 A GB8131584 A GB 8131584A GB 2111679 B GB2111679 B GB 2111679B
Authority
GB
United Kingdom
Prior art keywords
sonar
intruder detectors
intruder
detectors
sonar intruder
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
Application number
GB08131584A
Other versions
GB2111679A (en
Inventor
Peter Sothcott
Owen Griffith Williams
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB08131584A priority Critical patent/GB2111679B/en
Publication of GB2111679A publication Critical patent/GB2111679A/en
Application granted granted Critical
Publication of GB2111679B publication Critical patent/GB2111679B/en
Expired 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems
    • 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
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/04—Systems determining presence of a target
GB08131584A 1981-10-20 1981-10-20 Sonar intruder detectors Expired GB2111679B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08131584A GB2111679B (en) 1981-10-20 1981-10-20 Sonar intruder detectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08131584A GB2111679B (en) 1981-10-20 1981-10-20 Sonar intruder detectors

Publications (2)

Publication Number Publication Date
GB2111679A GB2111679A (en) 1983-07-06
GB2111679B true GB2111679B (en) 1985-03-06

Family

ID=10525269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08131584A Expired GB2111679B (en) 1981-10-20 1981-10-20 Sonar intruder detectors

Country Status (1)

Country Link
GB (1) GB2111679B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9002948D0 (en) * 1990-02-09 1990-04-04 Secr Defence Swimmer surveillance system
US7245559B2 (en) 2003-01-17 2007-07-17 Science Applications Incorporated Corporation Acoustic fence
US6813220B2 (en) * 2003-01-17 2004-11-02 Science Applications International Corporation Acoustic fence
US6778469B1 (en) 2003-02-12 2004-08-17 Science Applications International Corporation Harbor fence
DE102005007207B4 (en) * 2005-02-17 2008-04-24 Atlas Elektronik Gmbh Monitoring device for a water-bearing inlet channel
US7119732B1 (en) * 2005-12-01 2006-10-10 Raytheon Company Bistatic and multistatic system for space situational awareness
DE102005062109A1 (en) * 2005-12-23 2008-09-25 Atlas Elektronik Gmbh Person e.g. diver, protecting method for use in underwater prohibited area, involves operating unmanned underwater craft equipped with defense unit to expectation area when detecting person entering into prohibited area
FR2897442B1 (en) * 2006-02-13 2009-12-25 Marc Brussieux DEVICE FOR DETECTING INTRUSION IN AN SUBCARTIC AREA
US7457198B2 (en) * 2006-03-31 2008-11-25 Scientific Solutions, Inc. Swimmer detection sonar network
US8300499B2 (en) 2009-07-14 2012-10-30 Navico, Inc. Linear and circular downscan imaging sonar
US8305840B2 (en) 2009-07-14 2012-11-06 Navico, Inc. Downscan imaging sonar
US9142206B2 (en) 2011-07-14 2015-09-22 Navico Holding As System for interchangeable mounting options for a sonar transducer
US9182486B2 (en) 2011-12-07 2015-11-10 Navico Holding As Sonar rendering systems and associated methods
US9268020B2 (en) 2012-02-10 2016-02-23 Navico Holding As Sonar assembly for reduced interference
US9354312B2 (en) 2012-07-06 2016-05-31 Navico Holding As Sonar system using frequency bursts
US10151829B2 (en) 2016-02-23 2018-12-11 Navico Holding As Systems and associated methods for producing sonar image overlay
US11367425B2 (en) 2017-09-21 2022-06-21 Navico Holding As Sonar transducer with multiple mounting options

Also Published As

Publication number Publication date
GB2111679A (en) 1983-07-06

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Legal Events

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