EP1356450B1 - Rumpfsonar für seeschiff - Google Patents

Rumpfsonar für seeschiff Download PDF

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Publication number
EP1356450B1
EP1356450B1 EP01999938A EP01999938A EP1356450B1 EP 1356450 B1 EP1356450 B1 EP 1356450B1 EP 01999938 A EP01999938 A EP 01999938A EP 01999938 A EP01999938 A EP 01999938A EP 1356450 B1 EP1356450 B1 EP 1356450B1
Authority
EP
European Patent Office
Prior art keywords
hydrophones
antenna
sonar
sonar according
transmit antenna
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
EP01999938A
Other languages
English (en)
French (fr)
Other versions
EP1356450A1 (de
Inventor
Michel Thales Intellectual Property EYRIES
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.)
Thales SA
Original Assignee
Thales SA
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Filing date
Publication date
Application filed by Thales SA filed Critical Thales SA
Publication of EP1356450A1 publication Critical patent/EP1356450A1/de
Application granted granted Critical
Publication of EP1356450B1 publication Critical patent/EP1356450B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
    • G10K11/006—Transducer mounting in underwater equipment, e.g. sonobuoys
    • G10K11/008—Arrays of transducers

Definitions

  • the present invention relates to active sonars that are mounted on the hull of a naval vessel, including that of a surface vessel.
  • this type of sonar is constituted, as represented in FIG. 1, by a cylindrical antenna formed of a support 10 on which columns of transducers 11 are mounted.
  • the transducers are of the "Tonpilz" type. and ensure both transmission and reception.
  • the antenna is fixed on the shell by means of a part 12 in which threaded holes 120 have been made.
  • the invention proposes a naval ship shell sonar comprising a low-frequency direction-in-line emission antenna formed of a stack of piezoelectric rings mainly characterized in that it further comprises a receiving antenna.
  • transparent and volumic formed of at least two sets of omnidirectional hydrophones distributed over two concentric cylindrical surfaces and coaxial with the transmitting antenna.
  • the hydrophones are broadband.
  • it comprises a set of hydrophone assemblies on the same number of concentric cylindrical surfaces and coaxial with the transmitting antenna.
  • the distribution of the hydrophones on the cylindrical surfaces is random.
  • the distribution of the hydrophones on the cylindrical surfaces is incomplete.
  • the transmitting antenna is suspended so as to remain vertical to overcome the roll and pitch movements of the carrier building.
  • the emission lobe of the transmitting antenna is electronically stabilized.
  • reception signals of the hydrophones are electronically processed so as to form reception channels having the directivity characteristics of a baffled antenna.
  • a specific emission antenna formed of prestressed piezoelectric rings is combined with a specific reception antenna formed of omnidirectional hydrophones placed on a light structure.
  • FIG. 2 shows a preferred embodiment of a sonar antenna according to the invention.
  • the transmitting antenna 20 is formed of a stack of piezoelectric rings 201 whose diameter is adapted to the transmitted frequency.
  • Each ring is controlled separately by means of a power amplifier so as to produce a downwardly transmitting lobe. For this reason the rings are acoustically decoupled, as described for example in the French patent filed by the applicant on 14.10.1994 under the number 94 12285, published on 19.04.1996 under the number 2,725,868, and issued on 03.01.1997.
  • the transmission frequency is equal to 2.5 kHz and 10 rings of 250 mm high are stacked.
  • the width of the lobe in site is then about 15 degrees and so as to ensure the verticality of the antenna despite the movements of the boat, it is connected to the boat by means of an articulated axis 202.
  • the emission lobe is electrically stabilized in a known manner by varying the phases of the control signals of the rings.
  • the receiving antenna 21 is placed coaxially with the transmission antenna.
  • the hydrophones 210 are fixed on a structure 211 transparent to the acoustic waves in the frequency band used.
  • This structure is made of two concentric cylinders on which the hydrophones are fixed in columns and quincunxes, as represented for example in Figure 3 where the black circles correspond to the hydrophones of the outer cylinder and the white circles to the hydrophones of the inner cylinder.
  • the hydrophones will be broadband so that the sonar also can operate in passive (reception of external sources) or in multistatic (reception of other transmitters).
  • the hydrophone signals are processed to form channels whose directivity characteristics are those of a baffled antenna.
  • channels with a cardioid directivity as described in the patent, are formed.
  • the arrangement of the hydrophones on the two cylindrical supports may be random and / or incomplete (distance of several ⁇ , at the transmission frequency, between the hydrophones).
  • more than two cylinders can be used, thereby forming a voluminal antenna.
  • adaptive processing of the hydrophone signals can be implemented so as to reject the sound of the boat.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Claims (8)

  1. Rumpfsonar für ein Schiff mit einer Niederfrequenz-Sendeantenne (20) mit Richtcharakteristik in Elevationsrichtung, die von einem Stapel von piezoelektrischen Ringen (201) gebildet wird, dadurch gekennzeichnet, dass es außerdem eine für Schallwellen durchlässige und volumetrische Empfangsantenne aufweist, die von mindestens zwei Einheiten von ungerichteten Hydrofonen (210) gebildet wird, die auf zwei zylindrischen, konzentrischen und zur Sendeantenne koaxialen Flächen verteilt sind.
  2. Sonar nach Anspruch 1, dadurch gekennzeichnet, dass die Hydrofone (210) Breitband-Hydrofone sind.
  3. Sonar nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass es eine Einheit von Hydrofoneinheiten (210) auf einer gleichen Anzahl von zylindrischen, konzentrischen und zur Sendeantenne koaxialen Flächen aufweist.
  4. Sonar nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Verteilung der Hydrofone (210) auf den zylindrischen Flächen zufällig ist.
  5. Sonar nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Verteilung der Hydrofone (210) auf den zylindrischen Flächen lückenhaft ist.
  6. Sonar nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Sendeantenne (202) aufgehängt ist, um senkrecht zu bleiben, um sich von den Schlinger- und Stampfbewegungen des Trägerschiffs zu befreien.
  7. Sonar nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Sendekeule der Sendeantenne (202) elektronisch stabilisiert wird.
  8. Sonar nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Empfangssignale der Hydrofone (202) elektronisch verarbeitet werden, um Empfangskanäle zu bilden, die die Richteigenschaften einer abgeschirmten Antenne aufweisen.
EP01999938A 2000-12-08 2001-11-30 Rumpfsonar für seeschiff Expired - Lifetime EP1356450B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0015993 2000-12-08
FR0015993A FR2818081B1 (fr) 2000-12-08 2000-12-08 Sonar de coque pour batiment naval
PCT/FR2001/003797 WO2002047065A1 (fr) 2000-12-08 2001-11-30 Sonar de coque pour batiment naval

Publications (2)

Publication Number Publication Date
EP1356450A1 EP1356450A1 (de) 2003-10-29
EP1356450B1 true EP1356450B1 (de) 2006-11-02

Family

ID=8857418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01999938A Expired - Lifetime EP1356450B1 (de) 2000-12-08 2001-11-30 Rumpfsonar für seeschiff

Country Status (8)

Country Link
US (1) US6856580B2 (de)
EP (1) EP1356450B1 (de)
AU (1) AU2002222088A1 (de)
DE (1) DE60124314T2 (de)
FR (1) FR2818081B1 (de)
NO (1) NO20032607D0 (de)
RU (1) RU2003120448A (de)
WO (1) WO2002047065A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11333755B2 (en) * 2016-12-20 2022-05-17 Thales Optimised acoustic detection system for detecting various underwater threats in a sensitive zone

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584338B1 (fr) * 1985-07-02 1987-10-16 Axo Equip Automobile Procede de fabrication de blocs optiques et blocs optiques obtenus, selon ledit procede
US7354167B2 (en) 2004-05-27 2008-04-08 Angstrom, Inc. Beam focusing and scanning system using micromirror array lens
DE102009018624B3 (de) * 2009-04-23 2010-11-04 Atlas Elektronik Gmbh Elektroakustische Unterwasserantenne
US8681587B2 (en) 2012-03-29 2014-03-25 Rensselaer Polytechnic Institute Method and apparatus for an acoustic-electric channel mounting
FR3015785B1 (fr) * 2013-12-20 2015-12-25 Thales Sa Antenne omnidirectionnelle compacte pour sonar trempe
FR3026569B1 (fr) * 2014-09-26 2017-12-08 Thales Sa Antenne omnidirectionnelle
CN114740461B (zh) * 2022-06-07 2022-09-02 深圳市晟达通讯设备有限公司 一种声呐系统、以及用于该声呐系统的水下定位天线

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141148A (en) * 1960-12-27 1964-07-14 Honeywell Regulator Co Underwater sound apparatus
US4661938A (en) * 1986-01-23 1987-04-28 Westinghouse Electric Corp. Sonar apparatus
FR2604530B1 (fr) * 1986-09-26 1988-12-09 Thomson Csf Sonar cylindrique deployable
DE3635364A1 (de) * 1986-10-17 1988-04-28 Fraunhofer Ges Forschung Gruppenstrahler
US5515342A (en) * 1988-12-22 1996-05-07 Martin Marietta Corporation Dual frequency sonar transducer assembly
FR2739522B1 (fr) * 1995-09-28 1997-11-14 France Etat Antenne de sonar
US6341661B1 (en) * 2000-04-19 2002-01-29 L3 Communications Corporation Bow dome sonar

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11333755B2 (en) * 2016-12-20 2022-05-17 Thales Optimised acoustic detection system for detecting various underwater threats in a sensitive zone

Also Published As

Publication number Publication date
WO2002047065A1 (fr) 2002-06-13
US20040052160A1 (en) 2004-03-18
FR2818081B1 (fr) 2003-04-11
DE60124314T2 (de) 2007-05-31
AU2002222088A1 (en) 2002-06-18
US6856580B2 (en) 2005-02-15
RU2003120448A (ru) 2005-02-20
FR2818081A1 (fr) 2002-06-14
NO20032607L (no) 2003-06-10
DE60124314D1 (de) 2006-12-14
EP1356450A1 (de) 2003-10-29
NO20032607D0 (no) 2003-06-10

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