EP1356450A1 - Sonar de coque pour batiment naval - Google Patents
Sonar de coque pour batiment navalInfo
- Publication number
- EP1356450A1 EP1356450A1 EP01999938A EP01999938A EP1356450A1 EP 1356450 A1 EP1356450 A1 EP 1356450A1 EP 01999938 A EP01999938 A EP 01999938A EP 01999938 A EP01999938 A EP 01999938A EP 1356450 A1 EP1356450 A1 EP 1356450A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrophones
- antenna
- sonar
- sonar according
- cylindrical surfaces
- 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.)
- Granted
Links
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 which are mounted on the hull of a naval vessel, in particular that of a surface boat.
- this type of sonar consists, as shown in Figure 1, of a cylindrical antenna formed of a support 10 on which are mounted columns of transducers 11.
- the transducers are of the "Tonpilz" type and provide both transmission and reception.
- the antenna is fixed to the hull by means of a part 12 in which tapped holes 120 have been made.
- the invention proposes a hull sonar for a naval ship comprising a low-frequency directional transmitting antenna on site formed by a stack of piezoelectric rings mainly characterized in that it further comprises a receiving antenna. transparent and volume formed by at least two sets of omnidirectional hydropones distributed over two concentric cylindrical surfaces and coaxial with the transmitting antenna. According to another characteristic, hydrophones are broadband.
- it comprises a set of sets of hydrophones on the same number of concentric cylindrical surfaces and coaxial with the transmitting antenna. According to another characteristic, the distribution of hydrophones on the cylindrical surfaces is random.
- the distribution of hydrophones on the cylindrical surfaces is incomplete.
- the transmitting antenna is suspended so as to remain vertical to overcome the rolling and pitching movements of the carrier building.
- the transmit lobe of the transmit antenna is electronically stabilized.
- reception signals of the hydrophones are processed electronically so as to form reception channels having the directivity characteristics of a baffled antenna.
- a hydrophone distribution scheme according to the invention.
- a specific transmitting antenna formed from prestressed piezoelectric rings and a specific receiving antenna formed from omnidirectional hydrophones placed on a light structure are combined.
- FIG. 2 shows a preferred embodiment of a sonar antenna according to the invention.
- the transmission antenna 20 is formed of a stack of piezoelectric rings 201 whose diameter is adapted to the frequency transmitted.
- the description of a transmitting antenna produced using this technique can be found in the French patent filed by the plaintiff on 10.03.1998 under number 98 02912, published on 17.09.1999 under number 2776 161, and issued on 26.05. 2000.
- Each ring is controlled separately by means of a power amplifier so as to produce a downward emission lobe.
- the rings are acoustically decoupled as described for example in the French patent filed by the plaintiff on October 14, 1994 under the number 94 12285, published on April 19, 1996 under the number 2,725,868, and issued on January 03, 1997.
- the transmission frequency is equal to 2.5 kHz and 10 rings of 250 mm in height are stacked.
- the width of the elevated lobe is then about 15 degrees and so as to ensure the verticality of the antenna despite the movements of the boat, the latter 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 ring control signals.
- the reception antenna 21 is placed coaxially with that of transmission.
- the hydrophones 210 are fixed to a structure 211 transparent to acoustic waves in the frequency band used.
- This structure is made of 2 concentric cylinders on which the hydrophones are fixed in columns and staggered, as shown 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 can also operate in passive mode (reception of external sources) or in multistatic mode (reception of other transmitters).
- the hydrophone signals are processed to form channels whose directivity characteristics are those of a baffled antenna.
- we form channels having a cardioid directivity as described in the patent. French filed by the plaintiff on 26.09.86 under n ° 86 13485, published on 01.04.1988 under number 2604530, and issued on 28.11.1988.
- the arrangement of the hydrophones on the 2 cylindrical supports can be random and / or incomplete (distance of several ⁇ , at the transmission frequency, between the hydrophones).
- more than two cylinders can be used, thus forming a solid antenna.
- an adaptive processing of the hydrophone signals can be implemented so as to reject the noise from 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)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0015993A FR2818081B1 (fr) | 2000-12-08 | 2000-12-08 | Sonar de coque pour batiment naval |
FR0015993 | 2000-12-08 | ||
PCT/FR2001/003797 WO2002047065A1 (fr) | 2000-12-08 | 2001-11-30 | Sonar de coque pour batiment naval |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1356450A1 true EP1356450A1 (fr) | 2003-10-29 |
EP1356450B1 EP1356450B1 (fr) | 2006-11-02 |
Family
ID=8857418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01999938A Expired - Lifetime EP1356450B1 (fr) | 2000-12-08 | 2001-11-30 | Sonar de coque pour batiment naval |
Country Status (8)
Country | Link |
---|---|
US (1) | US6856580B2 (fr) |
EP (1) | EP1356450B1 (fr) |
AU (1) | AU2002222088A1 (fr) |
DE (1) | DE60124314T2 (fr) |
FR (1) | FR2818081B1 (fr) |
NO (1) | NO20032607L (fr) |
RU (1) | RU2003120448A (fr) |
WO (1) | WO2002047065A1 (fr) |
Families Citing this family (8)
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 |
FR3060761B1 (fr) * | 2016-12-20 | 2020-10-02 | Thales Sa | Systeme optimise de detection acoustique de diverses menaces sous-marines sur une zone sensible |
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)
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 |
-
2000
- 2000-12-08 FR FR0015993A patent/FR2818081B1/fr not_active Expired - Lifetime
-
2001
- 2001-11-30 WO PCT/FR2001/003797 patent/WO2002047065A1/fr active IP Right Grant
- 2001-11-30 DE DE60124314T patent/DE60124314T2/de not_active Expired - Lifetime
- 2001-11-30 EP EP01999938A patent/EP1356450B1/fr not_active Expired - Lifetime
- 2001-11-30 RU RU2003120448/28A patent/RU2003120448A/ru not_active Application Discontinuation
- 2001-11-30 US US10/433,777 patent/US6856580B2/en not_active Expired - Lifetime
- 2001-11-30 AU AU2002222088A patent/AU2002222088A1/en not_active Abandoned
-
2003
- 2003-06-10 NO NO20032607A patent/NO20032607L/no unknown
Non-Patent Citations (1)
Title |
---|
See references of WO0247065A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2002047065A1 (fr) | 2002-06-13 |
DE60124314T2 (de) | 2007-05-31 |
NO20032607D0 (no) | 2003-06-10 |
EP1356450B1 (fr) | 2006-11-02 |
US6856580B2 (en) | 2005-02-15 |
AU2002222088A1 (en) | 2002-06-18 |
RU2003120448A (ru) | 2005-02-20 |
FR2818081B1 (fr) | 2003-04-11 |
FR2818081A1 (fr) | 2002-06-14 |
NO20032607L (no) | 2003-06-10 |
DE60124314D1 (de) | 2006-12-14 |
US20040052160A1 (en) | 2004-03-18 |
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