EP2656528A1 - Procédé de fonctionnement d'un système de reconnaissance électronique dans un environnement protégé par un émetteur brouilleur - Google Patents

Procédé de fonctionnement d'un système de reconnaissance électronique dans un environnement protégé par un émetteur brouilleur

Info

Publication number
EP2656528A1
EP2656528A1 EP11815612.4A EP11815612A EP2656528A1 EP 2656528 A1 EP2656528 A1 EP 2656528A1 EP 11815612 A EP11815612 A EP 11815612A EP 2656528 A1 EP2656528 A1 EP 2656528A1
Authority
EP
European Patent Office
Prior art keywords
jammer
reconnaissance system
reactive
phases
interference
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
Application number
EP11815612.4A
Other languages
German (de)
English (en)
Other versions
EP2656528B1 (fr
Inventor
Ralf Lorch
Rainer Müller
Askold Meusling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hensoldt Sensors GmbH
Original Assignee
EADS Deutschland 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 EADS Deutschland GmbH filed Critical EADS Deutschland GmbH
Publication of EP2656528A1 publication Critical patent/EP2656528A1/fr
Application granted granted Critical
Publication of EP2656528B1 publication Critical patent/EP2656528B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/45—Jamming having variable characteristics characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/22—Jamming or countermeasure used for a particular application for communication related to vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/24—Jamming or countermeasure used for a particular application for communication related to weapons
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/92—Jamming or countermeasure characterized by its function related to allowing or preventing remote control

Definitions

  • RCIEDs remote controlled jmprovised explosive devices
  • ESS Electronic Support Measures
  • Such reconnaissance systems typically include components for modulation type detection, bearing, and, depending on the operational requirement, e.g. also for demodulation and development of the signal content.
  • the RF interference power radiated by the jammer to protect the vehicle or convoy causes an overload or saturation in the receiving channels of the reconnaissance system and thus makes it useless. Therefore, the reconnaissance mode of the jammer and thus the most consistently desired protection function must be turned off.
  • reactive jammers (English: Responsive Jammer) are known. These are jammers that only perform a fault when they have detected a signal to be disturbed. In order to detect such signals, reactive jammers work with an observation phase connected between two interference phases. During the observation phases, only the signal environment is observed and evaluated, but no interference signal is transmitted. In the following interference phase, RF power is actively radiated only on frequencies that have an occupancy. The observation phase of the reactive jammer is so short that targets (eg bombs) can not trigger during this time.
  • targets eg bombs
  • US2006 / 0153280 A1 likewise describes a reactive jamming transmitter which, however, can additionally determine the direction of a signal received in the observation phase. This direction is taken into account in the subsequent disturbing phase, in particular in that the interference signal is emitted only in the corresponding direction.
  • Embodiments and a reconnaissance system for use in the method according to the invention are the subject of further claims.
  • the operation of reactive jammer and reconnaissance system is synchronized such that signal reception of the reconnaissance system occurs only within the observation phases of the reactive jammer. This ensures that the reconnaissance system is not disturbed by the interference radiation. Thus, a high-quality setup operation becomes possible even when the protection function against RCIEDs (executed by the jammer) is activated.
  • At least one of the following functions is performed: - Bearing,
  • a reaction of the reconnaissance system to the perturbation cycle of the reactive jammer is possible.
  • a dynamic adaptation of the system synchronization can take place in such a way that the length of the observation phases and / or the interference phases of the reactive interference transmitter is controlled as a function of the operational requirements of the reconnaissance system.
  • both the efficiency of disturbance and the depth of explanation can be controlled in a targeted manner.
  • the reconnaissance system For example, for more complex functions of the reconnaissance system, such as e.g. Unlocking the signal content, the reconnaissance system a longer
  • the direction information obtained by the reconnaissance system can be used for direction-selective disruption with a multi-antenna system.
  • the generation of the directional signal can be realized either by appropriate beam shaping in phased array antennas or by antenna switching in the case of multiple directional antennas.
  • reactive jammer and reconnaissance system are not generally operated in combination, can be provided in a further embodiment, that the reconnaissance system automatically synchronized to the set in the reactive jammer temporal position of the observation phase as soon as the two units in contact with each other in operational use.
  • Reactive jammer and reconnaissance system can be used in particular for the protection of vehicles or vehicle convoys.
  • the reconnaissance system and reactive jammer may be located on the same vehicle or different vehicles depending on operational requirements. The invention will be explained in more detail with reference to figures. Show it:
  • Fig. 1 is a diagram for synchronizing the operation of reactive jammer and reconnaissance system
  • Figure 2 is a schematic representation of the overall configuration of reactive jammer and on clarification system.
  • FIG. 3 is a circuit diagram of details of the protection circuit of FIG. 2.
  • Fig. 1 shows a representation of the timing of the individual process steps within the reactive jammer and the reconnaissance system.
  • the function "bearing" is considered for the reconnaissance system.
  • the reconnaissance system may have additional functions, e.g. Modulation type detection, be provided.
  • the internal procedure of the jammer is the upper view of FIG. 1, the internal procedure for the direction finder is shown in the lower illustration of FIG.
  • Time duration T J2 emission of an interference signal with the frequency f_old.
  • Time T L T Signal recording to detect potential threats.
  • Time duration The signal received during T LT is subjected to an FFT to obtain spectrum information and to determine therefrom the required new interference frequency f_new. Subsequently, the determination of the new interference signal with the frequency f_neu. Duration T J2 : Transmission of the new interference signal with the frequency f_new.
  • T L T and Tj! together form the observation phase T B
  • the observation phase T B can be adjusted by lengthening T L T.
  • the cycle time between successive observation phases T B can be adjusted by shortening the disturbance phase T J2 and / or omitting the time duration Tji.
  • the disturbance phase T J2 can be extended.
  • the observation phase TB can be shortened to the time T LT and the interference phase can be lengthened accordingly, in which an interference signal is also transmitted in the time period Tji.
  • the interference efficiency ⁇ y of the jammer is as follows:
  • the direction finder is as follows: It carried out there in parallel to the activities of the jammer, the following processing steps:
  • the operation of reconnaissance system and reactive jammer is synchronized such that the signal pickup of the direction finder takes place only within the observation time TB of the reactive jammer, and never during the jamming phase T J2 , during which the jammer emits spurious energy.
  • the synchronization can be done, for example, with a synchronization line (eg copper or glass fiber) or via an air interface.
  • the air interface has the advantage that several vehicles can work in parallel.
  • the duration of the individual work phases can be freely selected by the reactive interferer and the reconnaissance system.
  • the signal pickup from the jammer and direction finder (as can be seen in the example of FIG. 1) begin or end at the same time.
  • Fig. 2 shows a schematic representation of the overall configuration of reactive jammer 1 and reconnaissance system 2.
  • the jammer 1 includes the jammer module ECM and the associated antenna A-ECM for emitting the interference signal and for receiving signals.
  • Reconnaissance system 2 comprises the reconnaissance module ESM and the associated antenna A-ESM for receiving signals.
  • the two systems 1 and 2 are, as described in detail above, synchronized with respect to the signal recording of the reconnaissance system 2.
  • the synchronization can be done via a cable connection as shown. This is especially preferred when the two systems 1, 2 are located on the same vehicle. Alternatively, a wireless connection may also be provided, in particular if the two systems 1, 2 are located on different vehicles or platforms.
  • Fig. 3 shows the structure of the antenna protection device P of Fig. 2 in detail. It is characterized in particular by speed in the switching open / closed and by a high insulation in the open state.
  • the coarse protection GS is intended to derive the essential part of the inflowing energy and may be e.g. consist of a gas gap.
  • the remaining voltage is applied to a fast switch SSC (e.g., a relay, a PIN diode, or even a MEMS switch) which turns off the antenna.
  • a limiter LT is provided, e.g. consists of diodes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

L'invention concerne un procédé de fonctionnement d'un système de reconnaissance électronique (2) dans un environnement protégé par un émetteur brouilleur (1). Le fonctionnement de l'émetteur brouilleur réactif (1) comprend alternativement des phases de brouillage (TJ2) destinées à émettre un signal perturbateur et des phases d'observation (TB) destinées à recevoir et analyser des signaux à brouiller. L'enregistrement des signaux par le système de reconnaissance électronique (2) se produit exclusivement pendant les phases d'observation (TB) de l'émetteur brouilleur réactif (1).
EP11815612.4A 2010-12-24 2011-12-21 Procédé de fonctionnement d' un système de reconnaissance dans un environnement protégé par un émetteur de signaux de brouillage Active EP2656528B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010056268A DE102010056268A1 (de) 2010-12-24 2010-12-24 Verfahren zum gleichzeitigen Betreiben eines Störsenders sowie eines elektronischen Aufklärungssystems
PCT/DE2011/002165 WO2012095080A1 (fr) 2010-12-24 2011-12-21 Procédé de fonctionnement d'un système de reconnaissance électronique dans un environnement protégé par un émetteur brouilleur

Publications (2)

Publication Number Publication Date
EP2656528A1 true EP2656528A1 (fr) 2013-10-30
EP2656528B1 EP2656528B1 (fr) 2018-05-02

Family

ID=45560607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11815612.4A Active EP2656528B1 (fr) 2010-12-24 2011-12-21 Procédé de fonctionnement d' un système de reconnaissance dans un environnement protégé par un émetteur de signaux de brouillage

Country Status (6)

Country Link
EP (1) EP2656528B1 (fr)
KR (1) KR101918576B1 (fr)
DE (1) DE102010056268A1 (fr)
ES (1) ES2672394T3 (fr)
IL (1) IL226406A (fr)
WO (1) WO2012095080A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111539628A (zh) * 2020-04-23 2020-08-14 成都众享天地网络科技有限公司 一种基于电子侦察装备截获数据的操作人员训练评估方法
DE102020113564A1 (de) 2020-05-19 2021-11-25 Thorsten Chmielus System zur Drohnenabwehr

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7035311B2 (en) * 2001-12-05 2006-04-25 Sicom Systems, Ltd. Apparatus and method for a digital, wideband, intercept and analysis processor for frequency hopping signals
US7099369B2 (en) * 2004-08-06 2006-08-29 Networkfab Corporation Method and apparatus for surgical high speed follower jamming based on selectable target direction
US7609748B2 (en) * 2004-08-06 2009-10-27 Agilent Technologies, Inc. Method, system and apparatus for maximizing a jammer's time-on-target and power-on-target
US7532856B2 (en) * 2006-03-24 2009-05-12 Robert Eugene Stoddard Regenerative jammer with multiple jamming algorithms
DE102009006861A1 (de) 2009-01-30 2010-08-12 Eads Deutschland Gmbh Responsive-Jammer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012095080A1 *

Also Published As

Publication number Publication date
WO2012095080A1 (fr) 2012-07-19
EP2656528B1 (fr) 2018-05-02
KR20140005158A (ko) 2014-01-14
KR101918576B1 (ko) 2018-11-14
IL226406A0 (en) 2013-07-31
DE102010056268A1 (de) 2012-06-28
IL226406A (en) 2016-10-31
ES2672394T3 (es) 2018-06-14

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