EP1957358A1 - Verfahren zur erzeugung einer gefahrenwarnung vor einem angreifenden torpedo - Google Patents
Verfahren zur erzeugung einer gefahrenwarnung vor einem angreifenden torpedoInfo
- Publication number
- EP1957358A1 EP1957358A1 EP06818551A EP06818551A EP1957358A1 EP 1957358 A1 EP1957358 A1 EP 1957358A1 EP 06818551 A EP06818551 A EP 06818551A EP 06818551 A EP06818551 A EP 06818551A EP 1957358 A1 EP1957358 A1 EP 1957358A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing angle
- torpedo
- bearing
- level
- angle
- 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
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000010606 normalization Methods 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 9
- 238000012790 confirmation Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 241000251729 Elasmobranchii Species 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 239000012636 effector Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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 generating a hazard warning in front of a torpedo attacking a watercraft, in particular wedge water, according to the preamble of claim 1.
- torpedoes are capable of attacking a watercraft from all directions. This is how modern, very quiet torpedoes run the watercraft, e.g. a surface ship, usually from a previous sector, whereas
- HMS HuIl Mounted Sonars
- Rate of change the distance to the torpedo is continuously calculated. If you find one
- Torpedo removal which is covered by the area of application of an effector to combat the torpedo, triggers the deposition of the effector on the ship side.
- the invention has for its object to provide an efficient method for generating a hazard warning in the event of a torpedo attacking aft, which at least triggers a warning alarm with little effort in signal processing when the torpedo overflows the underwater antenna.
- the object is according to the features in
- the method according to the invention has the advantage that by monitoring the rate of change of the cotangent the successively determined bearing angle to the torpedo approaching, the overflow of the torpedo via the underwater antenna can be determined with simple means.
- the detection of the overflow provides data about both the speed of the torpedo and its distance to the rear of the
- Torpedo position at the moment of antenna overflow is known.
- the target data required for the control can be preprogrammed very precisely in an effector set off from the watercraft to combat the torpedo, and the time at which the effector is removed for effective control of the torpedo can be relatively precise
- the angle of a receiving direction is used as the bearing angle
- This maximum reception level is continuously compared with a threshold value, preferably after smoothing, and a gate signal is generated when the threshold value is exceeded.
- the gate signal is linked to the trigger signal of the cotangent detection in such a way that a link signal arises when the gate signal and the trigger signal generated by the cotangent detection occur together.
- the warning alarm is activated with the link signal.
- the reliability of the torpedo detection is increased, i.e. the false alarm rate is reduced, since the torpedo generates the highest reception level when the underwater antenna overflows.
- it is additionally checked at which bearing angle the
- the underwater antenna has a plurality of hydrophones or hydrophone groups arranged next to one another in the towing direction, and a fan of strings of directional characteristics, to which a direction angle is uniquely assigned, is spanned on both sides of the underwater antenna from the electrical output signals of the hydrophones or hydrophone groups .
- Receive signals from the other directional characteristics is chosen larger.
- the maximum reception level is determined in the normalized reception signals and the directional angle of the directional characteristic with the maximum reception level as
- the median or mean value is formed and the current value of the received signal divided by this median or mean value.
- the normalization window or the time segment is dimensioned differently for directional characteristics having different directional angles. In this way, when a torpedo approaches, a slow increase in the level of the received signal in the
- the reception levels become the most aft
- a pre-alarm is issued if a steep rise in level occurs which exceeds a threshold value.
- a confirmation of the pre-alarm is issued as the level increases continuously.
- Fig. 1 is a schematic plan view of a
- Fig. 3 is a diagram of the function of the bearing angle to a torpedo attacking aft (curve a) and the cotangent of the bearing angle (curve b) in each case as a function of time.
- equipped surface ship 10 as an embodiment for a general watercraft has a
- the sonar device which, in addition to locating targets, also serves to detect and locate torpedoes attacking the ship.
- the sonar device comprises an active sonar 11, which is designed in a known manner as a cylinder base or as a so-called hull mounted sonar (HMS), and a towing sonar, which is towed in the water by the surface ship 10
- HMS hull mounted sonar
- Underwater antenna hereinafter called antenna 13, has. Due to the arrangement in the bow of the ship or the integration in the front side wall of the ship, the active sonar 11 only covers a sector of approx. 150 ° in each case from the ship's forward to starboard and from the ship's forward to port and is in an aft sector ⁇ «60 ° blind. From this aft sector
- Towing antenna 13 is on a very long trailing cable or Tow rope 14, eg 800m, attached and has an acoustically effective part of approx. ⁇ m.
- a towing brake 15 can also be attached to the towing antenna 13.
- the acoustic part of the towing antenna 13 is usually attached to the towing cable 14 and towing brake 15 via attenuators, not shown here, so-called VIMs.
- the acoustic part of the towing antenna 13 is formed by a plurality of hydrophones 16 (FIG. 2) or hydrophone groups which are arranged next to one another in the towing direction and which are arranged in the
- Tow rope 14 extending signal lines 17 with one installed on board the surface ship 10
- All hydrophones 16 or hydrophone groups are operated at the same time, and by means of a directional former 18, also called beamformer, the trailing antenna 13 becomes a fan on both sides
- Each directional characteristic 19 is a direction angle ⁇
- the longitudinal axis of the trailing antenna 13 represents the reference line for the directional angle ⁇ , so that the directional characteristics 19 with the largest
- Polar patterns 19 are. The one about the individual
- Directional characteristics 19 received signals received are evaluated to a so-called a torpedo approaching aft in the wake of the surface ship 10.
- the received signals from each directional characteristic 19 are normalized in block 20, with a normalization window used for the received signals from the most aft directional characteristics 19, that is to say from the so-called Endfire sector, compared to the normalization window for the
- Receive signals from the other directional characteristics 19 is chosen large. As a result, the different mechanisms that lead to level changes in the torpedo start
- Normalization window and a short period of time, i.e. a small normalization window, is used for the rapid level changes.
- the normalization is carried out in such a way that a current signal value of the received signal is divided by the median of the signal values which are contained in a time period determined by the normalization window and immediately preceding the current signal value. Instead of the median, the mean over the
- Normalization window can be used.
- the key point of the process for generating the hazard warning is the continuous bearing of the torpedo with the output of the bearing angle and the bearing time.
- To determine the bearing angle ⁇ is in the normalized reception signals of
- Directional characteristics 19 determined the maximum reception level and the direction angle ⁇ of the directional characteristics 19 with the maximum reception level output as a bearing angle ⁇
- Reception level P max output.
- the determination of the bearing angle ⁇ and the reception level P max is based on the
- Directional characteristics 19 limited, the direction angle ⁇ are in the angular range between 40 ° to 140 °.
- Passing through a filter 24 for smoothing fluctuations due to the pendulum movement of the torpedo in the wake of the surface ship 10 is compared in block 25 with a preset value or a threshold. If the smoothed cotangent rate of change exceeds the preset value, a trigger signal for a warning alarm is applied to a logic AND gate 26.
- the level maxima P max are smoothed (filter 27) and fed to a threshold (block 28). If the filtered maximum level signal exceeds the threshold value specified in block 28, a gate signal is generated and sent to the logic AND gate 26 laid.
- the trigger signal coming from block 25 and that coming from block 28 are in the logic AND gate 26
- the warning alarm is symbolically represented in FIG. 2 by a warning signal lamp 29.
- block 30 it is checked whether the link signal which activates the warning alarm occurs at a bearing angle ⁇ which is in the range between 80 ° and 120 °. If this is the case, the link signal is switched through in block 30 and emits an additional alarm. The additional alarm will
- Torpedo-fighting effector can be used.
- aft directional characteristics 19 in turn the maximum of the reception level is monitored as a function of time.
- the occurrence of a steep rise in level is sensed and on the other another another
- the temporal course of the maximum received level is set to a threshold (block 33) on the one hand via a low pass 32 with a predefinable cutoff frequency and on the other hand to a further threshold (block 35) via a low pass 34 with a cutoff frequency that is lower than that. If the threshold value specified in block 33
- the pre-alarm is output, which is symbolized in FIG. 2 by the warning signal lamp 37. If the threshold value specified in block 35 is exceeded, a pre-alarm confirmation is output, which is shown in FIG.
- Warning signal lamp 38 is symbolized.
- the warning signal lamps 29, 31, 37 and 38 preferably generate a differently colored display in a display on which the torpedo track is visualized. For example, a newly emerging torpedo is confirmed by the warning signal lamp 37 lighting up in blue and a confirmation of the newly emerging torpedo
- the warning signal lamp 38 lights up in green, an overflow of the torpedo by lighting up the warning signal lamp 29 in red and a maximum alarm by the three flashing
- Warning signal lamps 31 visualized.
- the normalized received signals can be shown on a screen, a so-called BTR display.
- the parallel active operation of the active sonar 11 interferes with the passive operation of the towing sonar. It is therefore advantageous to hide interference from the transmission process when receiving passive signals. This can be done in such a way that the transmission process is carried out by a majority
- Threshold exceeding of the level of the received signals (before their normalization in block 20) is detected and the old level value is maintained as long as the
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Emergency Alarm Devices (AREA)
- Cookers (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06818551T PL1957358T3 (pl) | 2005-12-08 | 2006-11-15 | Sposób generowania ostrzeżenia o zagrożeniu atakującą torpedą |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005058559A DE102005058559B3 (de) | 2005-12-08 | 2005-12-08 | Verfahren zur Erzeugung einer Gefahrenwarnung vor einem angreifenden Torpedo |
PCT/EP2006/010950 WO2007065535A1 (de) | 2005-12-08 | 2006-11-15 | Verfahren zur erzeugung einer gefahrenwarnung vor einem angreifenden torpedo |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1957358A1 true EP1957358A1 (de) | 2008-08-20 |
EP1957358B1 EP1957358B1 (de) | 2009-03-11 |
Family
ID=37440261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06818551A Active EP1957358B1 (de) | 2005-12-08 | 2006-11-15 | Verfahren zur erzeugung einer gefahrenwarnung vor einem angreifenden torpedo |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1957358B1 (de) |
AT (1) | ATE425079T1 (de) |
DE (2) | DE102005058559B3 (de) |
DK (1) | DK1957358T3 (de) |
PL (1) | PL1957358T3 (de) |
WO (1) | WO2007065535A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2513880C2 (ru) * | 2012-06-07 | 2014-04-20 | Открытое акционерное общество "Таганрогский научно-исследовательский институт связи" (ОАО "ТНИИС") | Способ защиты подводной лодки от широкополосной мины-торпеды |
DE102016109105A1 (de) * | 2016-05-18 | 2017-11-23 | Atlas Elektronik Gmbh | Wasserfahrzeug zum Orten eines Unterwasserobjektes |
RU2756387C1 (ru) * | 2019-04-26 | 2021-09-29 | Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-Морского Флота "Военно-морская академия им. Адмирала Флота Советского Союза Н.Г. Кузнецова" | Интегрированная подсистема управления противоторпедной защиты надводного корабля |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4216534A (en) * | 1960-06-28 | 1980-08-05 | The United States Of America As Represented By The Secretary Of The Navy | Decoying acoustic homing torpedoes |
US4215630A (en) * | 1978-03-06 | 1980-08-05 | General Dynamics Corporation Pomona Division | Anti-ship torpedo defense missile |
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 |
DE19935436B4 (de) * | 1999-07-28 | 2005-11-10 | Atlas Elektronik Gmbh | Verfahren zur Torpedoabwehr |
-
2005
- 2005-12-08 DE DE102005058559A patent/DE102005058559B3/de not_active Expired - Fee Related
-
2006
- 2006-11-15 PL PL06818551T patent/PL1957358T3/pl unknown
- 2006-11-15 DK DK06818551T patent/DK1957358T3/da active
- 2006-11-15 EP EP06818551A patent/EP1957358B1/de active Active
- 2006-11-15 WO PCT/EP2006/010950 patent/WO2007065535A1/de active Application Filing
- 2006-11-15 DE DE502006003138T patent/DE502006003138D1/de active Active
- 2006-11-15 AT AT06818551T patent/ATE425079T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2007065535A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007065535A1 (de) | 2007-06-14 |
EP1957358B1 (de) | 2009-03-11 |
DE502006003138D1 (de) | 2009-04-23 |
PL1957358T3 (pl) | 2009-08-31 |
DE102005058559B3 (de) | 2006-12-14 |
ATE425079T1 (de) | 2009-03-15 |
DK1957358T3 (da) | 2009-05-18 |
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