DE102018131524A1 - Process for protecting moving or immovable objects from approaching laser-guided threats - Google Patents

Abstract

In order to easily protect movable or immovable objects (1) from laser-guided threats (3) approaching the object (1) in particular from above, the invention proposes effective masses of a corresponding number of decoys (4) in one to ignite the predeterminable height range on the windward side of the object (1) to be protected, so that the decoy cloud (s) forming in this height range is moved by the wind force acting on it over the object (1) to be protected and subsequently obscures it.

Description

The invention relates to a method for protecting moving or immovable objects from laser-guided threats approaching the object. The invention is particularly concerned with the protection against laser-guided threats approaching from above (e.g. laser-guided missiles, sliding bombs, laser-guided bombs, etc.).

Laser-guided threats have a laser finder made of photodiodes. The photodiodes register only a certain wave spectrum of monochromatic laser light. In order for the target to be recognized by the sensor, it must be marked with a laser beam from the ground or from the air until it hits the target. The missile needs visual contact with the target during the final phase of the flight.

Already the DE 196 04 745 C1 deals with a method and an arrangement for the deception of a final-phase guided ammunition. The target is spared by sending a laser beam to this ammunition, which directs the ammunition onto a new trajectory.

A method for protecting ships from articulated missiles and a device for carrying out this method are known from US Pat DE 103 46 001 B4 known. In the known method, an optimal decoy pattern is determined by means of a computer from the missile data (approach direction, distance and speed of the missile), the ship's own data (cruise speed, direction and roll and pitch movements of the ship), as well as the wind data (wind speed and wind direction). Based on this decoy pattern, the number of decoys required, their firing angle and their delay time until the ignition of their active mass are determined. Then, based on these values, a decoy launcher is triggered, which fires the determined number of corresponding decoys with a programmable delay time. The effective masses of the decoys are then deployed at a predetermined height in the immediate vicinity of the ship in order to generate a decoy structure which then takes the decoy away from the ship with a change in direction.

Devices for providing a dummy target in front of radar-guided search heads describe the DE 10 2015 002 737 A1 as well as the DE 10 2010 032 458 A1 . An apparatus and a method for producing an effective smoke screen is the WO 2012 / 028257A1 removable.

With the DE 11 2010 003 767 T5 discloses a laser guided missile with a dual mode SAL / IR seeker with a common line of sight. With the help of an IR detector, the incident infrared energy is recorded in order to generate at least one IR steering signal. At least one SAL steering signal is generated with a position-sensitive SAL detector.

The DE 10 2015 015 938 A1 furthermore assumes that IR decoys against laser-guided guided missiles are ineffective by design.

The invention has for its object to provide a method with which a simple protection of moving objects, such as ships or other military vehicles, but also immobile objects, such as buildings, is possible from approaching laser-guided missiles.

This object is achieved by the features of claim 1. Further, particularly advantageous configurations of the invention are disclosed in the subclaims.

The invention is essentially based on the idea that during the final phase of the flight of a laser-guided ammunition or missile, i.e. a threat, the visual contact to the target is interrupted. For this purpose, a decoy cloud is generated, which at least hides or possibly envelops the ship from above during the final phase, i.e. includes.

As a result of this idea, the decoy launcher is aligned in such a way that the corresponding activation of the active mass of the decoy occurs above an object to be protected and in a predeterminable height range to the side of the object to be protected. The application takes place taking into account the wind direction. After activating the active masses of the decoys in this height range, the decoy cloud (s) that are formed are then moved over the object to be protected by the wind force acting on them and then conceal the object. This breaks the line of sight to the target.

It has proven to be advantageous if the individual decoys are fired in several volleys, which together form a sequence, in order to completely cover the object with a cloud of exchange bodies. The decoys of the respective salvo are arranged in rows. The time interval between the volleys is selected such that the individual volleys can be fired in the same spatial area, ie the wind has the decoy partial cloud of the previous salvo are already moved towards the object before the decoy charges of the decoys of the new salvo are activated.

The concealment of the object can also, as in the DE 10 2015 002 737 A1 already considered, can be realized by several throwers (decoy throwers) of a TKWA (decoy throwing system).

Another advantage of this method is that problems caused by decoys falling back on the object (e.g. flares that have not burned completely, etc.) are excluded. These fall into the water or onto the floor next to the object to be protected.

In order to enable protection of moving or immovable objects from laser-guided threats approaching the object from above in a simple manner, the invention proposes to ignite active masses of a corresponding number of decoys on the windward side of the object to be protected, so that the decoy cloud (s) forming in this height range is moved by the wind force acting on it over the object to be protected and then obscures it.

• 1a, 2a und 3a schematische Vorderansichten eines Schiffes beim Ausstoßen von Täuschkörper-Salven zur Erzeugung einer erfindungsgemäßen Täuschkörperwolke über dem Schiff und
• 1b, 2b und 3b die zu den 1a, 2a und 3a gehörenden Draufsichten auf das schematisch dargestellte Schiff.

Further details and advantages of the invention result from the following exemplary embodiment described with reference to figures. Show it:

• 1a , 2a and 3a schematic front views of a ship when emitting decoy bursts to generate a decoy cloud according to the invention over the ship and
• 1b , 2 B and 3b the to the 1a , 2a and 3a belonging plan views of the ship shown schematically.

In the 1a to 3b 1 designates a ship which is only shown schematically. The ship 1 is with at least one "top attack" sensor 2nd provided one from above of the ship 1 directed laser beam 8th can detect in time that before the missile strikes 3rd on the ship 1 Defense measures according to the invention can be taken. The laser beam 8th does not necessarily have to be 90 ° from the top of the ship 1 be judged. Unless the laser beam 8th in the detection area 9 of the "Top Attack" sensor 2nd lies, this is detected accordingly and countermeasures according to the invention can be taken.

For this purpose, a computer (not shown) determines an optimal decoy pattern from the missile or threat data (distance, speed), the ship data (direction of movement, speed of movement) and the wind data (direction and speed) 100 ( 3b ; for calculating decoy patterns, cf. also the DE 103 46 001 B4 or WO 2012/028257 A1 ). The method for determining the optimal decoy pattern can be optimized by using bearing data, e.g. elevation and azimuth angle of the threat (direction of the laser beam 8th ), are taken into account.

For a measurement of the elevation and azimuth angle of the laser beam 8th can be omitted if a target assignment by the laser beam 8th from above, so that the elevation angle is 90 ° and the azimuth angle is irrelevant.

For this decoy pattern 100 then the number of decoys required 4th , their respective firing angle and their delay time until the ignition of the corresponding active mass is determined.

With the decoys 4th it can be decoys with infrared / smoke signature.

Then, based on these values, a decoy launcher 5 controlled, which then the determined number of corresponding decoys 4th fired on time. For this, the decoy launcher 5 aligned so that the active mass of the respective decoy 4th in a specifiable height range on the windward side of the ship to be protected 1 is ignited and the decoys 4th after igniting their active masses, the decoy pattern 100 generate corresponding decoy cloud. This cloud of decoys is from that to the ship 1 to blowing wind 6 about the ship 1 moves and hides it so that the ship 1 of an approaching laser-guided threat 3rd is no longer recognized as such and a target assignment of the threat 3rd becomes impossible.

It has proven to be advantageous, if not all, to cover the ship 1 required decoy cloud is generated outside the ship area and then waited until the decoy cloud by the wind 6 about the ship 1 but that several sub-clouds of decoys are generated one after the other, which are located above the ship 1 to one the ship 1 Put together the covering decoy cloud.

For this purpose, several volleys of decoys 4th fired one after the other. In the illustrated embodiment, five volleys IV to cover the ship 1 fired, being in the 1a and 1b the firing of the first volley I, in the 2a and 2 B firing the second volley II and in 3a and 3b the Firing the fifth salvo V are shown schematically.

With each of the volleys IV become three (exemplary) decoys at the same time 4th fired, which are arranged in a row (cf. 1b , 2 B and 3b) , and which each generate a decoy sub-cloud after activation of their active masses.

Like from the 1b-3b is removable, the wind is blowing 6 in the illustrated embodiment obliquely from the front, so that, seen in the wind direction, the ship 1 a relatively narrow width B having ( B is also referred to below as the projected width). Therefore, the decoy cloud can cover the ship 1 be relatively narrow, when choosing the number of decoys 4th per salvo IV as well as in the choice of the number of volleys IV should be taken into account.

The time interval from the decoy launcher 5 missed volleys IV is now chosen so that the individual volleys IV always in the same windward area 7 can be shot, that is, the time interval of the volleys IV must be chosen so that the decoy arrives before arrival 4th a new volley II-V the decoy subcloud of the previous salvo I-IV through the wind 6 towards the ship 1 was postponed.

The number of volleys IV on decoys 4th is chosen such that after the firing of all decoys 4th a sequence a homogeneous and complete covering of the ship 1 results in ( 3b) .

To be an effective solution to fully cover the ship 1 to realize it is necessary to project the projected width B of the ship 1 in the direction of the wind 6 to calculate dynamically. The width of the decoys 4th existing series of a volley IV results from the previously calculated projected width B of the ship 1 .

The effectiveness of the decoy cloud can also be achieved with the "Top Attack" sensor 2nd be checked because this sensor 2nd then the laser beam 8th can no longer grasp or possibly detects its scattered radiation.

The method according to the invention is of course not based on the protection of ships 1 or other vehicles, but can also protect buildings, etc. from approaching laser-guided threats 3rd be used.

Reference symbol list

1

Ship, object

2nd

"Top Attack" sensor, sensor

3rd

Missile / Threats

4th

Decoy

5

Decoy launcher

6

wind

7

Area outside the object (windward side)

8th

Laser beam or laser source

9

Detection area "Top Attack" sensor

100

Decoy pattern

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 19604745 C1 [0003]
• DE 10346001 B4 [0004, 0018]
• DE 102015002737 A1 [0005, 0013]
• DE 102010032458 A1 [0005]
• WO 2012/028257 A1 [0005, 0018]
• DE 112010003767 T5 [0006]
• DE 102015015938 A1 [0007]

Claims (10)

Method for protecting moving or immovable objects (1) from laser-guided threats (3) approaching the object (1), characterized in that active masses of at least one decoy (4) are on the windward side of the object (1) to be protected on the windward side are ignited remotely, and that after the active masses have ignited, a developing decoy cloud is moved over the object (1) to be protected by wind. Procedure according to Claim 1 , characterized in that a computer determines an optimal decoy pattern (100) from threat data of the approaching laser-guided threat (3) and wind data in the vicinity of the object (1). Procedure according to Claim 1 or 2nd , characterized in that object data, such as direction of movement, speed of movement of the object are taken into account. Procedure according to Claim 2 or 3rd , characterized in that a number of the required decoys (4), their firing angle and their delay time until the ignition of their active mass is determined from these data. Procedure according to Claim 4 , characterized in that on the basis of these values, at least one decoy launcher (5) is fired, which fires the determined number of corresponding decoy bodies (4), so that a resulting decoy body cloud results which completely obscures the object (1) Procedure according to one of the Claims 2 to 5 , characterized in that the threat data are the distance and speed, possibly an elevation angle and an azimuth angle of the laser-guided threat (3). Procedure according to one of the Claims 2 to 6 , characterized in that the wind data are wind direction and wind speed. Procedure according to one of the Claims 1 to 7 , characterized in that the individual decoys (4) are fired in several salvos (IV) and the active charges of the decoys (4) of the respective salvo (IV) are activated at the same time in order to completely cover the object (1) by means of a swap body cloud. Procedure according to Claim 8 , characterized in that the decoys (4) of the respective salvo (IV) are arranged in rows. Procedure according to Claim 9 , characterized in that the time interval between the salvos (IV) is selected from one another such that the wind has already shifted the decoy partial cloud of the preceding salvo (I-IV) in the direction of the object (1) before the decoys ( 4) shot the following salvo (II-V) into the same windward area (7) and their active charges are activated there.

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