EP1117587A1 - Anti-torpedo defence method - Google Patents
Anti-torpedo defence methodInfo
- Publication number
- EP1117587A1 EP1117587A1 EP00940415A EP00940415A EP1117587A1 EP 1117587 A1 EP1117587 A1 EP 1117587A1 EP 00940415 A EP00940415 A EP 00940415A EP 00940415 A EP00940415 A EP 00940415A EP 1117587 A1 EP1117587 A1 EP 1117587A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torpedo
- ship
- sonar
- distance
- towing
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G9/00—Other offensive or defensive arrangements on vessels against submarines, torpedoes, or mines
- B63G9/02—Means for protecting vessels against torpedo attack
Definitions
- the invention relates to a method for warding off a torpedo attacking a ship from the attacked ship, in which the torpedo is located using a ship-based sonar device, which has an on-board active sonar that is located all around with a stern gap, and a towing sonar that is towed away from the ship and is combated by means of at least one defense detector which can be removed from the ship.
- torpedoes Due to their type, torpedoes are capable of attacking a surface ship from all directions. Thus, modern, very quiet torpedoes usually start the ship from a previous, older or wake-water-loud loud torpedoes from aft sector. For the early location of the approaching torpedo, an all-round view of the sonar device is therefore required, which must actively locate to detect the quiet torpedoes.
- Known on-board active sonars which are usually installed in the bow of the ship or integrated on the bow as so-called hull-mounted sonars (HMS), have an imperfect all-round view with a more or less large aft gap due to the position and the screw noise of the ship. This aft sector of the ship is blind to incoming torpedoes.
- HMS hull-mounted sonars
- the sonar device additionally has a towing sonar dragged in the water, active and passive locating, consisting of a transmitter and a receiver, which are towed on towing ropes.
- active and passive locating consisting of a transmitter and a receiver, which are towed on towing ropes.
- the invention has for its object to improve a method for torpedo defense of the type mentioned in such a way that reliable protection against torpedoes attacking from the aft direction, which can be noisy, is achieved with little technical effort for the towing sonar.
- the method according to the invention has the advantage that the passive bearing and passive acquisition of distance information to the torpedo reliably measure every torpedo, even a very loud torpedo that starts astern, and the use of the defense reefectors, which are fast but only have a limited range can be optimized.
- the towing sonar only needs to be designed as a short passive towing antenna, since it only has to have a relatively short range determined by the ship due to the gap angle and the towing distance of the towing antenna. With this inexpensive tow antenna is the blind
- the invention is described below with reference to an embodiment shown in the drawing.
- the drawing shows a schematic representation of a top view of a surface ship equipped with a sonar device for torpedo defense.
- a surface ship 10 equipped with protection devices against torpedoes has a sonar device which, in addition to locating targets, serves to detect and locate torpedoes attacking the ship.
- the sonar device comprises an on-board (on-board) active sonar 11 and a towing sonar 12 drawn in the water.
- the active sonar 11 is known in a known manner either as a cylinder base or as a so-called HMS (envelope-mounted sonar) with a
- the towing sonar 12 which consists exclusively of a receiver, a so-called towing antenna 13, which is towed by the ship 10 at a towing distance s serves to close this gap of approximately 60 ° in the aft region of the surface ship 10.
- the tow antenna 13 is attached to a tow rope 14.
- a towing brake 15 can also be attached, which ensures improved rectilinear alignment of the towing antenna 13.
- the surface ship 10 equipped with the described sonar device thus has all-round protection against attacking torpedoes, which are reliably detected and located regardless of their configuration and direction of attack and are actively combated by deploying defense detectors.
- a torpedo starting in the monitoring sector of the active sonar 11 is measured with high precision by the active sonar 11 so that its position is known at every point in time when the torpedo starts measured so that its position is known at all times during torpedo start.
- the active sonar 11 In the aft sector of the surface ship 10 monitored in front of the towing sonar 12, in which the active sonar 11 is "blind", the approaching, often very loud torpedoes are also detected and located.
- the approaching torpedo 16 is acoustically passively direction-mapped in a known manner.
- the bearing angle is indicated with ⁇ ⁇ .
- the frequency f ⁇ of at least one significant spectral line emitted by the Torpado 16 is measured over time (f ⁇ (t)).
- the distance a ⁇ to the torpedo 16 is now calculated in a known manner from the bearing angle migration speed d ⁇ ⁇ / dt, the frequency f ⁇ and the rate of change df ⁇ / dt the frequency f ⁇ .
- the torpedo distance a ⁇ results from the following equation:
- the position of the torpedo 16 by the towing sonar 16 is known at any point in time by the attacking torpedo 16 after bearing and distance, so that when setting a torpedo distance a ⁇ , which is covered by the area of use of a defense detector, the latter is used to combat the torpedo is released or shot down by the ship 10.
- the location range R of the trailing antenna 13 can be kept relatively small, so that the trailing antenna 13 requires only a relatively small amount of technical effort.
- the minimum range of the trailing antenna 13 corresponds to that multiplied by the sine of the half angle ⁇ of the aft gap of the active sonar 11
- the range R of the tow sonar 12 is usually selected to be somewhat larger than this minimum range.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Colloid Chemistry (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Developing Agents For Electrophotography (AREA)
- Magnetic Heads (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Optical Distance (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK00940415T DK1117587T3 (en) | 1999-07-28 | 2000-06-30 | Method for determining the measuring distance |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19935436 | 1999-07-28 | ||
DE19935436A DE19935436B4 (en) | 1999-07-28 | 1999-07-28 | Torpedo defense method |
PCT/EP2000/006101 WO2001008970A1 (en) | 1999-07-28 | 2000-06-30 | Anti-torpedo defence method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1117587A1 true EP1117587A1 (en) | 2001-07-25 |
EP1117587B1 EP1117587B1 (en) | 2004-10-27 |
Family
ID=7916350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00940415A Expired - Lifetime EP1117587B1 (en) | 1999-07-28 | 2000-06-30 | Anti-torpedo defence method |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1117587B1 (en) |
AT (1) | ATE280708T1 (en) |
AU (1) | AU5535600A (en) |
DE (2) | DE19935436B4 (en) |
DK (1) | DK1117587T3 (en) |
WO (1) | WO2001008970A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10228681C1 (en) * | 2002-06-27 | 2003-07-03 | Stn Atlas Elektronik Gmbh | Underwater body detection method uses evaluation of electroacoustic signals for detection of splash noise when body drops into water |
DE102005058559B3 (en) * | 2005-12-08 | 2006-12-14 | Atlas Elektronik Gmbh | Danger warning producing method for use during attacking of wake-controlled torpedo, involves comparing slew rate of cotangent with default value and releasing operating signal for warning alarm if cotangent exceeds default value |
DE102016109105A1 (en) * | 2016-05-18 | 2017-11-23 | Atlas Elektronik Gmbh | Watercraft for locating an underwater object |
RU2654435C1 (en) * | 2017-01-23 | 2018-05-17 | Федеральное государственное унитарное предприятие "Крыловский государственный научный центр" | Underwater vehicle-hunter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5373773A (en) * | 1981-08-06 | 1994-12-20 | The United States Of American As Represented By The Secretary Of The Navy | Anti-torpedo stern defense system |
DE3519269C2 (en) * | 1985-05-30 | 1993-12-02 | Nord Systemtechnik | Method for determining travel status data of an object |
-
1999
- 1999-07-28 DE DE19935436A patent/DE19935436B4/en not_active Expired - Fee Related
-
2000
- 2000-06-30 AT AT00940415T patent/ATE280708T1/en not_active IP Right Cessation
- 2000-06-30 AU AU55356/00A patent/AU5535600A/en not_active Abandoned
- 2000-06-30 EP EP00940415A patent/EP1117587B1/en not_active Expired - Lifetime
- 2000-06-30 WO PCT/EP2000/006101 patent/WO2001008970A1/en active IP Right Grant
- 2000-06-30 DK DK00940415T patent/DK1117587T3/en active
- 2000-06-30 DE DE50008407T patent/DE50008407D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0108970A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19935436A1 (en) | 2001-02-08 |
DK1117587T3 (en) | 2005-01-10 |
DE19935436B4 (en) | 2005-11-10 |
AU5535600A (en) | 2001-02-19 |
ATE280708T1 (en) | 2004-11-15 |
DE50008407D1 (en) | 2004-12-02 |
EP1117587B1 (en) | 2004-10-27 |
WO2001008970A1 (en) | 2001-02-08 |
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