NO863465D0 - PROCEDURE AND APPARATUS FOR DISPOSAL OF VESSELS. - Google Patents

PROCEDURE AND APPARATUS FOR DISPOSAL OF VESSELS.

Info

Publication number
NO863465D0
NO863465D0 NO863465A NO863465A NO863465D0 NO 863465 D0 NO863465 D0 NO 863465D0 NO 863465 A NO863465 A NO 863465A NO 863465 A NO863465 A NO 863465A NO 863465 D0 NO863465 D0 NO 863465D0
Authority
NO
Norway
Prior art keywords
noise
ship
pattern
detected
respect
Prior art date
Application number
NO863465A
Other languages
Norwegian (no)
Other versions
NO863465L (en
NO169921C (en
NO169921B (en
Inventor
Egidius Arens
Manfred Meyersieck
Alfred Schulte
Original Assignee
Krupp Gmbh
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 Krupp Gmbh filed Critical Krupp Gmbh
Publication of NO863465D0 publication Critical patent/NO863465D0/en
Publication of NO863465L publication Critical patent/NO863465L/en
Publication of NO169921B publication Critical patent/NO169921B/en
Publication of NO169921C publication Critical patent/NO169921C/en

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
    • G01V1/001—Acoustic presence detection
    • 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

Abstract

If operating noise radiated from a ship is received and stands out against a general background noise, a ship is detected. A problem is presented by detection at low signal-to-noise ratio. In order to achieve a greater reliability of detection even in that case, a method is provided in which the noise received is examined in relation to the pattern of its envelope with respect to time and a ship is only detected if the pattern with respect to time exhibits variations which are characteristic of an amplitude-modulated noise. A device for implementing the method is provided which can be used particularly advantageously in underwater sound technology in panoramic level indicating systems.
NO863465A 1985-08-31 1986-08-29 DEVICE FOR DISPOSAL OF VESSELS NO169921C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853531230 DE3531230A1 (en) 1985-08-31 1985-08-31 METHOD FOR DETECTING VEHICLES

Publications (4)

Publication Number Publication Date
NO863465D0 true NO863465D0 (en) 1986-08-29
NO863465L NO863465L (en) 1987-03-02
NO169921B NO169921B (en) 1992-05-11
NO169921C NO169921C (en) 1992-08-19

Family

ID=6279893

Family Applications (1)

Application Number Title Priority Date Filing Date
NO863465A NO169921C (en) 1985-08-31 1986-08-29 DEVICE FOR DISPOSAL OF VESSELS

Country Status (4)

Country Link
EP (1) EP0213541B1 (en)
DE (2) DE3531230A1 (en)
DK (1) DK168465B1 (en)
NO (1) NO169921C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2202942B (en) * 1987-03-21 1991-08-21 Ferranti Plc Production of directionally limited acoustic power spectra
DE3832678C2 (en) * 1988-09-27 2001-10-18 Stn Atlas Elektronik Gmbh DF method and device for carrying it out
DE3934745C1 (en) * 1989-10-18 1990-11-15 Heinrich Prof. Dr.Rer.Nat. 4630 Bochum De Baule
DE4132964C1 (en) * 1991-10-04 1992-07-30 Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Der Verteidigung, Dieser Vertreten Durch Den Praesidenten Des Bundesamtes Fuer Wehrtechnik Und Beschaffung, 5400 Koblenz, De Registering acoustic near field of marine vessel - using platform for hydrophones and distance sensors at set spacing to locate dominant sources e.g. engine, generator
DE4243831A1 (en) * 1992-12-23 1994-06-30 Daimler Benz Ag Procedure for estimating the runtime on disturbed voice channels
DE19505052C2 (en) * 1994-04-20 1997-03-13 Fraunhofer Ges Forschung Anti-theft device for vehicles in parking garages
DE102008007851B3 (en) * 2008-02-07 2009-03-19 Atlas Elektronik Gmbh Method for conducting a torpedo attack
DE102010056526B4 (en) 2010-12-29 2016-08-11 Atlas Elektronik Gmbh Method for determining one or more relative directions as target bearing or target bearings and device for carrying out the method
DE102012000788B4 (en) 2012-01-17 2013-10-10 Atlas Elektronik Gmbh Method and device for processing waterborne sound signals
DE102012015638A1 (en) 2012-08-07 2014-02-13 Atlas Elektronik Gmbh Method and device for classifying watercraft

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189701A (en) * 1971-03-09 1980-02-19 The United States Of America As Represented By The Secretary Of The Navy Hydroacoustic detection system
JPS586133B2 (en) * 1977-06-24 1983-02-03 株式会社日立製作所 Modulation noise analysis method
JPS5614931A (en) * 1979-07-18 1981-02-13 Nissan Motor Co Ltd Knocking intensity determining device
GB2104218B (en) * 1981-07-28 1984-08-30 Ferranti Ltd Detecting harmonically-rich acoustic sources
DE3204874C2 (en) * 1982-02-11 1994-07-14 Atlas Elektronik Gmbh Passive method for obtaining target data from a sound source
DE3222255A1 (en) * 1982-06-14 1983-12-15 Fried. Krupp Gmbh, 4300 Essen Method for determining and displaying target data
FR2599860B1 (en) * 1984-03-22 1989-12-01 France Etat Armement METHOD AND DEVICE FOR THE PASSIVE SOUND DETECTION OF AIRCRAFT, ESPECIALLY HELICOPTERS

Also Published As

Publication number Publication date
DK414786A (en) 1987-03-01
DE3531230C2 (en) 1989-04-13
EP0213541B1 (en) 1991-01-16
NO863465L (en) 1987-03-02
DK168465B1 (en) 1994-03-28
DE3676905D1 (en) 1991-02-21
NO169921C (en) 1992-08-19
EP0213541A2 (en) 1987-03-11
NO169921B (en) 1992-05-11
DE3531230A1 (en) 1987-03-05
EP0213541A3 (en) 1988-11-09
DK414786D0 (en) 1986-08-29

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