IL201876A0 - Method for finding the bearing of a sound-emitting target - Google Patents

Method for finding the bearing of a sound-emitting target

Info

Publication number
IL201876A0
IL201876A0 IL201876A IL20187609A IL201876A0 IL 201876 A0 IL201876 A0 IL 201876A0 IL 201876 A IL201876 A IL 201876A IL 20187609 A IL20187609 A IL 20187609A IL 201876 A0 IL201876 A0 IL 201876A0
Authority
IL
Israel
Prior art keywords
sub
acoustic
target
location
incident angle
Prior art date
Application number
IL201876A
Other versions
IL201876A (en
Original Assignee
Atlas Elektronik Gmbh
Dietmar Schneider
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 Atlas Elektronik Gmbh, Dietmar Schneider filed Critical Atlas Elektronik Gmbh
Publication of IL201876A0 publication Critical patent/IL201876A0/en
Publication of IL201876A publication Critical patent/IL201876A/en

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
    • G01S3/78—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 electromagnetic waves other than radio waves
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • 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
    • 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
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Sliding-Contact Bearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention relates to a method for locating a sound projecting target by means of an elongated underwater antenna (10) having a plurality of electroacoustic converters (11), wherein a horizontal target location (ß<SUB>zk</SUB>) is determined in the water as the target in a directionally selective manner from the receiving signals of the converters (11), including a measured variable (C<SUB>mess</SUB>) of the acoustic velocity. In order to compensate the systematic location error inherent in such an underwater antenna, which may lead to erroneous locations particularly in the case of greater locating angles, the acoustic radiation course is calculated in the acoustic distribution direction specified by the target location (ß<SUB>zk</SUB>) by means of an acoustic distribution model, and a vertical acoustic incident angle (?<SUB>k</SUB>) is determined at the location of the antenna from the acoustic radiation course for an estimated distance and depth of the target. A correction factor is deduced from the vertical acoustic incident angle (Yk), and the measured variable (C<SUB>mess</SUB>) of the acoustic velocity is corrected by multiplying the measured variable by said acoustic incident angle. Locating in turn is carried out using the corrected variable (C<SUB>einstell</SUB>) of the acoustic velocity, and an improved target location (ß<SUB>zk</SUB>) is obtained.
IL201876A 2007-05-14 2009-11-01 Method for finding the bearing of a sound-emitting target IL201876A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007022563A DE102007022563A1 (en) 2007-05-14 2007-05-14 Method for locating a sounding target
PCT/EP2008/002640 WO2008138433A1 (en) 2007-05-14 2008-04-03 Method for locating a sound-projecting target

Publications (2)

Publication Number Publication Date
IL201876A0 true IL201876A0 (en) 2010-06-16
IL201876A IL201876A (en) 2013-03-24

Family

ID=39496047

Family Applications (1)

Application Number Title Priority Date Filing Date
IL201876A IL201876A (en) 2007-05-14 2009-11-01 Method for finding the bearing of a sound-emitting target

Country Status (11)

Country Link
EP (1) EP2145203B1 (en)
JP (1) JP4922450B2 (en)
KR (1) KR20100017807A (en)
AT (1) ATE516509T1 (en)
AU (1) AU2008250691B2 (en)
CA (1) CA2684930A1 (en)
DE (1) DE102007022563A1 (en)
ES (1) ES2369593T3 (en)
IL (1) IL201876A (en)
MY (1) MY147074A (en)
WO (1) WO2008138433A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009047940B3 (en) * 2009-10-01 2011-03-24 Atlas Hydrographic Gmbh Method for determining sound velocity in region of acoustic receiver attached at e.g. research ship during measuring surface profile of waterbody base, involves comparing profiles and determining value for sound velocity based on results
JP5704327B2 (en) * 2011-03-28 2015-04-22 日本電気株式会社 Horizontal distance calculation system and horizontal distance calculation method for calculating horizontal distance to underwater object
KR101285692B1 (en) 2012-07-04 2013-07-12 국방과학연구소 Apparatus and method for correcting direction finding data
KR101467822B1 (en) * 2013-12-18 2014-12-03 한국해양과학기술원 Signal processing method for transforming and reproducing stereo underwater acoustic signals in the air and signal processing appratus using thereof
DE102019201174A1 (en) 2019-01-30 2020-07-30 Atlas Elektronik Gmbh Method and receiving system for determining a distance to an underwater sound source
CN111580079B (en) * 2020-05-11 2022-11-29 山东省科学院海洋仪器仪表研究所 Underwater moving target nearest distance estimation method based on single-vector hydrophone
CN113176533B (en) * 2021-04-28 2023-11-24 中国电子科技集团公司第三十六研究所 Direction finding method and device for underwater acoustic communication signals and electronic equipment

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57162575A (en) * 1981-03-31 1982-10-06 Fujitsu Ltd Vertical deflecting circuit
FR2614427B1 (en) 1987-04-24 1989-06-09 Thomson Csf PASSIVE SOUND TELEMETRY PROCESS
JPS641995A (en) * 1987-06-24 1989-01-06 Nec Corp Active sonar apparatus
FR2647224B1 (en) * 1989-05-22 1992-04-30 Thomson Csf METHOD FOR DETERMINING THE MOVEMENT OF A TARGET IN UNDERWATER ACOUSTICS
DE4207716A1 (en) 1992-03-11 1993-09-16 Atlas Elektronik Gmbh METHOD FOR DETERMINING DEPTH VALUES OF A WATERBOTTOM PROFILE
JP2723813B2 (en) * 1995-02-16 1998-03-09 防衛庁技術研究本部長 Horizontal distance calculation method for the target within the convergence zone
US6388948B1 (en) * 2000-10-12 2002-05-14 The United States Of America As Represented By The Secretary Of The Navy Method and system for determining underwater effective sound velocity
DE10129726C2 (en) 2001-06-20 2003-08-28 Stn Atlas Elektronik Gmbh Method for determining target data
DE10130297C2 (en) * 2001-06-22 2003-12-24 Stn Atlas Elektronik Gmbh Method for determining the target position of a sound-emitting target
DE10153443C1 (en) 2001-10-30 2003-05-22 Stn Atlas Elektronik Gmbh Procedure for the passive location of sound-emitting targets

Also Published As

Publication number Publication date
WO2008138433A1 (en) 2008-11-20
EP2145203A1 (en) 2010-01-20
JP4922450B2 (en) 2012-04-25
IL201876A (en) 2013-03-24
ATE516509T1 (en) 2011-07-15
MY147074A (en) 2012-10-31
KR20100017807A (en) 2010-02-16
DE102007022563A1 (en) 2008-11-27
AU2008250691A1 (en) 2008-11-20
AU2008250691B2 (en) 2011-02-03
JP2010527012A (en) 2010-08-05
EP2145203B1 (en) 2011-07-13
CA2684930A1 (en) 2008-11-20
ES2369593T3 (en) 2011-12-02

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Legal Events

Date Code Title Description
FF Patent granted
MM9K Patent not in force due to non-payment of renewal fees