WO2013045015A1 - Système de protection actif - Google Patents

Système de protection actif Download PDF

Info

Publication number
WO2013045015A1
WO2013045015A1 PCT/EP2012/003634 EP2012003634W WO2013045015A1 WO 2013045015 A1 WO2013045015 A1 WO 2013045015A1 EP 2012003634 W EP2012003634 W EP 2012003634W WO 2013045015 A1 WO2013045015 A1 WO 2013045015A1
Authority
WO
WIPO (PCT)
Prior art keywords
protection system
missile
decoy
retro
antenna
Prior art date
Application number
PCT/EP2012/003634
Other languages
German (de)
English (en)
Inventor
Michael Krebs
Martin Fegg
Christoph Bormann
Christoph Heine
Jenz TIMMERMANN
Thomas Zwick
Original Assignee
Rheinmetall Waffe Munition Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rheinmetall Waffe Munition Gmbh filed Critical Rheinmetall Waffe Munition Gmbh
Priority to DK12755798.1T priority Critical patent/DK2761245T3/en
Priority to ES12755798.1T priority patent/ES2654603T3/es
Priority to EP12755798.1A priority patent/EP2761245B1/fr
Priority to PL12755798T priority patent/PL2761245T3/pl
Publication of WO2013045015A1 publication Critical patent/WO2013045015A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H11/00—Defence installations; Defence devices
    • F41H11/02—Anti-aircraft or anti-guided missile or anti-torpedo defence installations or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41J—TARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J2/00—Reflecting targets, e.g. radar-reflector targets; Active targets transmitting electromagnetic or acoustic waves

Definitions

  • the invention relates to a protection system which is formed from at least one active decoy target based on, in particular, van Atta arrays, for the protection of objects, such as ships, vehicles, stationary objects, etc., against approaching radar-guided (active) missiles .
  • This is an off-board protection system that works less as a jammer but rather as a sham target in the near range of 10m to a distance of 10km.
  • a radar lobe of the approaching missile is used directly for generating and reflected back to this, without changing the properties.
  • a directional antenna adaptation or adaptation of the characteristics is not necessary.
  • passive decoy To ward off active missiles passive decoy (chaff) are known. These are deployed and reflect a signal emitted by the missile back in the direction of the approaching missile.
  • a passive radar missile is described in US 3,938,151 A1. From US 2,908,002 A1 a passive electromagnetic reflector is known.
  • Alternative active decoy targets are generally activated only when they are moved, so that a certain amount of time has to be scheduled until the decoy target has fully unfolded.
  • the invention has the object to show an active decoy for the protection of objects, in particular of ships, against approaching radar-guided missiles.
  • the invention is based on the idea of creating an active decoy by the use of a retro-reflector or a retro-directional antenna, preferably in the form of a van-Atta array or by at least one backscatter system, with means that actively actively monitor a radar signal in the direction of incidence and thus send back to the missile.
  • a retro-reflector as an active decoy has the advantage that it generates a large radar backscatter frequency cross section (RCS) as an active retro-reflector, which allows the generation of a large RCS for any polarization of the missile.
  • RCS radar backscatter frequency cross section
  • a single van-Atta array - a single retro-directive antenna - is unable to determine the direction of an incident signal. Therefore, in the simplest variant, in addition to this array, a sensor for determining the direction of the approaching missile can be integrated into the device. This information is then exploited to align the array in that direction.
  • a plurality of arrays are interconnected, whereby they not only cover a wide spatial area, but are also able to - for example, with the help of actuators etc. - to be able to independently align with the approaching missile.
  • the direction of incidence of the approaching missile is determined by the arrays and this information is given to a storage control acting on actuators, etc. of the decoy, so the arrays, to align the decoy optimally to the missile.
  • a dual-polarized realization allows the use of the reflector in any polarization of the missile (alignment of transverse waves in a preferred direction) by using appropriate antennas and their interconnection.
  • the signals in the van-Atta array are tapped at amplifiers and fed into an electromagnetic lens, for example a Rotman lens.
  • the receive antenna array functions both as part of the van-Atta array and for the Rotman lens.
  • the signal power is detected or tapped, so that the direction of incidence of the signals and thus the direction of the approaching missile can be determined by comparing the power. This information is then used to make a position control for tracking the array.
  • FIG. 2 shows a first simplified variant of the active dummy target from FIG. 1, FIG.
  • Fig. 3 shows a further variant of the decoy target of Fig. 1 in the form of a simple
  • FIG. 1 shows a protection system in a sketch-like illustration for the general understanding that an active dummy target 1 for countering the threat of an object 4 against a radar-guided missile 5.
  • the active decoy 1 includes at least one retro-directional antenna or retro-reflector 2, which can be formed at least from a receiving and transmitting antenna as a reflector or reflection antenna but also several to the radar beam R F emitted by the missile 5 exactly in the direction of incidence and to send back to the missile 5 as a reflection beam R s .
  • the active protection system 1 is carried as an off-board variant when not in use on or on the object 4, here a ship.
  • a sensor 6 is additionally involved in the protection system 20, which sensor serves to detect the direction of the missile 5 and cooperates with an actuating unit (not shown in greater detail), by which at least the decoy 1 is moved into the corresponding position or position .
  • Direction can be brought.
  • Two different functional modes of the decoy 1 are possible. The one mode is the distraction - if the missile 5 has not yet switched to the object 4, the other mode is the seduction, separating the dummy target from the real target, a variant, if the missile 5 already the actual target (object 4) has recorded.
  • the initiation of the distraction of the missile 5 is recognized as a passive missile, which in turn monitors an area of expectation.
  • Direction, distance and speed of the missile 5 are determined.
  • the decoy 1 is already deployed to create a more attractive target 4 'at a distance from the actual target 4 with the decoy 1.
  • search process the detected missile 5 prefers. If then the missile 5 emits its radar lobe, this is already in the direction of the decoy 1, preferably even before this has the actual object 4 perceived.
  • a radiated target signal is detected by further detectors, for example an active radar and radar warning devices, which are preferably mounted on the object 4.
  • This radiated target signal of the missile 5 is received by the decoy 1 and amplified blasted back to the missile 5.
  • the decoy 1 itself moves during object-like speed away from the object 4.
  • the decoy 1 can fly away from the object 4, preferably at maximum object height. This is true for ships as well as other moving objects 4, e.g. As vehicles, too. In ships to be protected, the decoy 1 can be moved floating or passively, etc. moved. An independent driving away or pulling away is also possible with vehicles on land.
  • the dummy target 1 itself mirrors the Fig. 3.
  • the dummy target 10 consists of an antenna 11, which consists of several receiving antennas 11.1-11.3 (11.n), and an antenna 12, which consists of several, preferably equal to Antennas 12.1-12.3, 12.n exists. According to the number of antennas 11, 12, amplifier stages V, - V 3, V n are integrated between the two.
  • the incident direction of the approaching missile 5 can be determined in addition to the recording of the radar beam R F.
  • the signals running in the antenna group 11 are tapped at amplifiers V, -V 3 and fed to an electromagnetic lens 13, such as a Rotman lens. Their output information is compared in a comparator 14. For this purpose, their outputs are routed to the comparator or an evaluation unit 14. Based on the tapped signals, the incident direction of the signals and thus the direction of the approaching missile 5 is now determined in the evaluation unit 14. In this case, the signal differences of the antennas 11.1-11.3 are evaluated.
  • a command is then given to a bearing control 15, which in turn on the servo motors 16, etc., ie, the actuator of the dummy target 10 and the protection system 20, act to align at least the dummy target 10 optimally to the missile 5.
  • a direction sensor 6 can also be integrated into the evaluation here as well.
  • the antennas 11 and 12 are preferably designed in the form of a van Atta array.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne la création d'un écho fantôme actif (1, 10) au moyen d'un rétro-réflecteur ou d'une antenne rétrodirective (2, 11, 12), de préférence sous forme d'un réseau van Atta ou d'au moins un système de rétrodiffusion, comprenant par conséquent des moyens pouvant renvoyer avec une précision active un signal radar (RF) dans la direction d'incidence et donc sur le missile (5). L'utilisation d'un rétro-réflecteur (2, 11, 12) comme écho fantôme actif est avantageuse, étant donné que celui-ci produit en tant que rétro-réflecteur actif (2, 11, 12) une importante section de fréquence de rétrodiffusion de radar, ce qui permet de produire une importante section de fréquence de rétrodiffusion de radar pour une polarisation quelconque du missile (5).
PCT/EP2012/003634 2011-09-30 2012-08-30 Système de protection actif WO2013045015A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK12755798.1T DK2761245T3 (en) 2011-09-30 2012-08-30 Active protection system
ES12755798.1T ES2654603T3 (es) 2011-09-30 2012-08-30 Sistema de protección activo
EP12755798.1A EP2761245B1 (fr) 2011-09-30 2012-08-30 Système de protection actif
PL12755798T PL2761245T3 (pl) 2011-09-30 2012-08-30 Aktywny system obronny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011114574.9 2011-09-30
DE102011114574A DE102011114574A1 (de) 2011-09-30 2011-09-30 Aktives Schutzsystem

Publications (1)

Publication Number Publication Date
WO2013045015A1 true WO2013045015A1 (fr) 2013-04-04

Family

ID=46799193

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/003634 WO2013045015A1 (fr) 2011-09-30 2012-08-30 Système de protection actif

Country Status (8)

Country Link
EP (1) EP2761245B1 (fr)
DE (1) DE102011114574A1 (fr)
DK (1) DK2761245T3 (fr)
ES (1) ES2654603T3 (fr)
NO (1) NO2777281T3 (fr)
PL (1) PL2761245T3 (fr)
PT (1) PT2761245T (fr)
WO (1) WO2013045015A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018134241A1 (fr) * 2017-01-17 2018-07-26 Norbit Its Dispositif sans fil rétrodirectif et procédé

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011120929A1 (de) 2011-12-14 2013-06-20 Rheinmetall Waffe Munition Gmbh Schutzsystem, insbesondere für Schiffe, gegen radargelenkte Bedrohungen
DE102021117084A1 (de) 2021-07-02 2023-01-05 Rheinmetall Waffe Munition Gmbh Verfahren zum Schutz eines Objekts vor einem radargelenkten Flugkörper

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908002A (en) 1955-06-08 1959-10-06 Hughes Aircraft Co Electromagnetic reflector
GB1284747A (en) 1968-10-25 1972-08-09 Tokyo Shibaura Electric Co Van-atta array antenna device
US3938151A (en) 1970-08-14 1976-02-10 The United States Of America As Represented By The Secretary Of The Navy Passive radar decoy having a large cross section
US5064140A (en) * 1990-10-09 1991-11-12 The United States Of America As Represented By The Secretary Of The Army Covert millimeter wave beam projector
DE10016781A1 (de) * 2000-04-05 2001-10-25 Daimler Chrysler Ag Schutzvorrichtung
DE60010701T2 (de) 1999-04-01 2005-05-19 Saab Ab Verfahren zum abwerfen von gegenmassnahmen und vorrichtung zum lagern und abwerfen von gegenmassnahmen
DE102005037583A1 (de) 2005-08-09 2007-02-22 Siemens Ag Mikrowellen-RFID-System mit adaptiver Strahlformung
DE102006017107A1 (de) 2006-04-10 2007-10-11 Oerlikon Contraves Ag Schutzeinrichtung und Schutzmaßnahme für eine Radaranlage
EP2390957A1 (fr) * 2010-05-24 2011-11-30 Chemring Countermeasures Limited Leurre de radar

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2908002A (en) 1955-06-08 1959-10-06 Hughes Aircraft Co Electromagnetic reflector
GB1284747A (en) 1968-10-25 1972-08-09 Tokyo Shibaura Electric Co Van-atta array antenna device
US3938151A (en) 1970-08-14 1976-02-10 The United States Of America As Represented By The Secretary Of The Navy Passive radar decoy having a large cross section
US5064140A (en) * 1990-10-09 1991-11-12 The United States Of America As Represented By The Secretary Of The Army Covert millimeter wave beam projector
DE60010701T2 (de) 1999-04-01 2005-05-19 Saab Ab Verfahren zum abwerfen von gegenmassnahmen und vorrichtung zum lagern und abwerfen von gegenmassnahmen
DE10016781A1 (de) * 2000-04-05 2001-10-25 Daimler Chrysler Ag Schutzvorrichtung
DE102005037583A1 (de) 2005-08-09 2007-02-22 Siemens Ag Mikrowellen-RFID-System mit adaptiver Strahlformung
DE102006017107A1 (de) 2006-04-10 2007-10-11 Oerlikon Contraves Ag Schutzeinrichtung und Schutzmaßnahme für eine Radaranlage
EP2390957A1 (fr) * 2010-05-24 2011-11-30 Chemring Countermeasures Limited Leurre de radar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018134241A1 (fr) * 2017-01-17 2018-07-26 Norbit Its Dispositif sans fil rétrodirectif et procédé
US11152698B2 (en) 2017-01-17 2021-10-19 Norbit Its Retrodirective wireless device and method
EA039212B1 (ru) * 2017-01-17 2021-12-17 Норбит Итс Беспроводное устройство и способ переизлучения в обратном направлении

Also Published As

Publication number Publication date
PT2761245T (pt) 2018-01-08
EP2761245B1 (fr) 2017-10-04
EP2761245A1 (fr) 2014-08-06
ES2654603T3 (es) 2018-02-14
DE102011114574A1 (de) 2013-04-04
PL2761245T3 (pl) 2018-03-30
DK2761245T3 (en) 2018-01-08
NO2777281T3 (fr) 2018-07-28

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