WO2010032237A1 - Système et procédé pour coordonner plusieurs dispositifs de brouillage - Google Patents

Système et procédé pour coordonner plusieurs dispositifs de brouillage Download PDF

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Publication number
WO2010032237A1
WO2010032237A1 PCT/IL2009/000897 IL2009000897W WO2010032237A1 WO 2010032237 A1 WO2010032237 A1 WO 2010032237A1 IL 2009000897 W IL2009000897 W IL 2009000897W WO 2010032237 A1 WO2010032237 A1 WO 2010032237A1
Authority
WO
WIPO (PCT)
Prior art keywords
jamming signal
jamming
data
jammer
transmissions
Prior art date
Application number
PCT/IL2009/000897
Other languages
English (en)
Inventor
Benjamin Te-Eni
Gil Israeli
Original Assignee
Netline Communications Technologies (Nct) Ltd.
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 Netline Communications Technologies (Nct) Ltd. filed Critical Netline Communications Technologies (Nct) Ltd.
Publication of WO2010032237A1 publication Critical patent/WO2010032237A1/fr

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Classifications

    • 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
    • H04K3/44—Jamming having variable characteristics characterized by the control of the jamming waveform or modulation type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/28—Countermeasures against jamming with jamming and anti-jamming mechanisms both included in a same device or system, e.g. wherein anti-jamming includes prevention of undesired self-jamming resulting from jamming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/30—Jamming or countermeasure characterized by the infrastructure components
    • H04K2203/34—Jamming or countermeasure characterized by the infrastructure components involving multiple cooperating jammers

Definitions

  • the present invention relates to jamming of undesired transmissions while optionally enabling data communication.
  • the present embodiments are directed to providing a jamming and communications system capable of generating and transmitting a data-modulated jamming signal, by data-modulating the transmitted jamming signal.
  • Some aspects of the present embodiments are directed to providing a system architecture in which the operation of multiple jamming units is coordinated by a central jamming signal coordinator, enabling the jamming units to continuously transmit and receive data-modulated jamming signal with reduced mutual interference.
  • a jammer for jamming undesired transmissions which includes a jamming signal generator and a data modulator.
  • the jamming signal generator generates a jamming signal and the data modulator modulates the jamming signal generated by the jamming signal generator with a data stream.
  • the jammer further comprises a data demodulator, configured for demodulating received external transmissions to extract a data stream.
  • a data demodulator configured for demodulating received external transmissions to extract a data stream.
  • the jammer further comprises an RF receiver configured for receiving external transmissions.
  • the jammer further comprises a transmitter configured for transmitting the data modulated jamming signal.
  • a system is formed of multiple jammers and a jammer coordinator.
  • the jammer coordinator is configured for coordinating the jammers to reduce the interference of a transmitted jamming signal or signals upon the demodulating.
  • the transmissions are received during the transmission of the jamming signal.
  • the jammer further comprises a jamming signal cancellation unit, configured for canceling an interference of the jamming signal on the demodulating.
  • the method further comprises modulating the jamming signal with a data stream.
  • the method further comprises demodulating received transmissions to extract a data stream.
  • the method further comprises canceling an interference of the jamming signal on the demodulating.
  • Implementation of the method and system of the present invention involves performing or completing selected tasks or steps manually, automatically, or a combination thereof.
  • several selected steps could be implemented by hardware or by software on any operating system of any firmware or a combination thereof.
  • selected steps of the invention could be implemented as a chip or a circuit.
  • selected steps of the invention could be implemented as a plurality of software instructions being executed by a computer using any suitable operating system.
  • selected steps of the method and system of the invention could be described as being performed by a data processor, such as a computing platform for executing a plurality of instructions.
  • FIG. IA is a simplified block diagram of a jammer, according to preferred embodiment of the present invention respectively.
  • FIG. 6A is a simplified block diagram of a method for jamming undesired transmissions with a data-modulated jamming signal, in accordance preferred embodiment of the present invention
  • FIG. 9 show two examples of a typical power spectrum of a jamming system output signal.
  • the present invention in some embodiments thereof, relates to a jammer for jamming undesired transmissions while optionally enabling data communication.
  • the jammer may be configured into a jamming system with improved interoperability with between jammers and with other friendly devices.
  • Fig. Ia is a simplified block diagram of a jammer for jamming undesired transmissions, according to an embodiment of the present invention.
  • Jammer 5 serves as a combined jammer and digital communication device by modulating the jamming signal with the digital data.
  • jammer 5 includes jamming signal generator 13.1 and data modulator 16.
  • Jamming signal generator 13.1 generates a jamming signal, preferably in accordance with a jamming scheme designed to disrupt the undesired transmissions.
  • the jamming scheme may be provided externally, preprogrammed, or defined and/or modified internally.
  • Data modulator 16 modulates the jamming signal with a data stream. Any suitable data modulation technique may be utilized, including amplitude modulation (AM), frequency modulation (FM) and phase modulation (PM).
  • AM amplitude modulation
  • FM frequency modulation
  • PM phase modulation
  • Data modulator 16 may perform data modulation of the jamming signal by any method known in the art, including, but not limited to: frequency shift keying (FSK), phase shift keying (PSK), amplitude shift keying (ASK) and quadrature amplitude modulation (QAM).
  • Spread spectrum modulation techniques such as direct-sequence spread-spectrum (DSSS) may be used as well, in order to provide a wideband noise-like jamming signal on the one hand, while carrying the data stream on the other hand. Modulation may be performed at baseband, at the transmitted RF frequency or at intermediate frequency (IF), as required by system considerations.
  • Jammer 5 may also include data reception functionality.
  • jammer 5 includes data demodulator 17 which demodulates received transmissions to extract a data stream. The data modulator 17 may receive transmissions while the jamming signal is being transmitted.
  • the data carried by the demodulated data stream may be used for general data communication, for example between jammers, or for controlling jammer 5.
  • Jammer 5 may further include jamming signal cancellation unit 18, which cancels (or reduces) the interference of the jamming signal on the demodulation. Reduction of the interference of the jamming signal may result in lower levels of noise generated by self transmission, and in improved reception of signals transmitted by other communication and/or jamming systems.
  • a sample of the jamming signal is input to jamming signal cancellation unit 18, which uses the sampled jamming signal to reduce the effect of the jamming signal on RF receiver 14 and/or data demodulator 17.
  • Fig. Ia shows the sampled jamming signal being provided directly to jamming signal cancellation unit 18 by jamming signal generator 13.1.
  • sampling of the jamming signal may be performed at any point between generation of the jamming signal and its transmission.
  • Jamming signal cancellation unit 18 may use any jamming signal cancellation method known in the art. Examples of such methods are described in US Patent No. 5,363,104 by Richmond, US Patent No. 6,100,838 by Richmond et al, and in US patent No. 7,058,368 by Nicholls et al.
  • jammer 5 further includes receiver 14 for receiving the external transmissions and/or RF transmitter 15 for transmitting the jamming signal.
  • Receiver 14 serves as an RF front-end which receives external transmissions, and may perform further RF processing of the received transmissions such as downconverting the received signals to baseband or any intermediate frequency (IF) suitable for processing by other jammer components.
  • IF intermediate frequency
  • Transmitter 15 upconverts the jamming signal generated by jamming signal generator 13.1, if necessary, and amplifies the jamming signal for transmission.
  • Transmitter 15 is preferably suitable for transmission of all types of jamming signals which may be generated by jamming signal generator 13.1, so that jammer 5 may include a single transmitter.
  • FIG. 6a is a simplified block diagram of a method for jamming undesired transmissions with a data-modulated jamming signal, according to a preferred embodiment of the present invention.
  • a jamming signal is generated in accordance with a jamming scheme, and in step 620 the generated jamming signal is modulated with a data stream.
  • the jamming signal is transmitted in step 630.
  • external transmissions are received and demodulated to a data stream.
  • a power spectrum is shown of a jamming signal is modulated by data communication information.
  • the data communication information is transmitted with frequency offset #1 740, while in jamming system 2 the same power spectrum is generated with frequency offset #2 750

Abstract

Selon l'invention, un brouilleur pour brouiller des transmissions non souhaitées comprend un générateur de signaux de brouillage et un modulateur de données. Le générateur de signaux de brouillage génère un signal de brouillage et le modulateur de données module le signal de brouillage avec un flux de données.
PCT/IL2009/000897 2008-09-18 2009-09-14 Système et procédé pour coordonner plusieurs dispositifs de brouillage WO2010032237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL194197 2008-09-18
IL194197A IL194197A0 (en) 2008-09-18 2008-09-18 System and method for jamming undesired transmissions

Publications (1)

Publication Number Publication Date
WO2010032237A1 true WO2010032237A1 (fr) 2010-03-25

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Application Number Title Priority Date Filing Date
PCT/IL2009/000897 WO2010032237A1 (fr) 2008-09-18 2009-09-14 Système et procédé pour coordonner plusieurs dispositifs de brouillage

Country Status (2)

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IL (1) IL194197A0 (fr)
WO (1) WO2010032237A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013934A1 (fr) * 2011-07-28 2013-01-31 Siemens Ag Österreich Procédé de transmission de données d'information
WO2013079512A1 (fr) * 2011-11-29 2013-06-06 Airbus Operations Gmbh Signal de service utilisé en tant que partie d'un signal de masquage de communications terrestres à bord d'un aéronef
FR2999843A1 (fr) * 2012-12-19 2014-06-20 Thales Sa Procede de brouillage de communications dans un reseau controle en boucle ouverte
WO2014173639A1 (fr) * 2013-04-24 2014-10-30 Rheinmetall Waffe Munition Gmbh Procédé de radiocommunication et système pour le mettre en œuvre
WO2016209335A1 (fr) * 2015-06-25 2016-12-29 Raytheon Company Procédés et appareils de communication de données en utilisant une modulation de bande passante
US9887799B2 (en) 2015-06-25 2018-02-06 Raytheon Company Methods and apparatus for data communication using bandwidth modulation
KR20200058032A (ko) * 2018-11-19 2020-05-27 국방과학연구소 통신 및 교란을 수행하는 방법 및 시스템

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0940051A2 (fr) * 1997-06-02 1999-09-08 Netline Communications Technologies (NCT) Ltd. Pare-feu pour communications cellulaires
WO2007086790A1 (fr) * 2006-01-25 2007-08-02 Bae Systems Bofors Ab Procédé pour créer une interférence, et agencement de brouillage intentionnel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0940051A2 (fr) * 1997-06-02 1999-09-08 Netline Communications Technologies (NCT) Ltd. Pare-feu pour communications cellulaires
WO2007086790A1 (fr) * 2006-01-25 2007-08-02 Bae Systems Bofors Ab Procédé pour créer une interférence, et agencement de brouillage intentionnel

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013013934A1 (fr) * 2011-07-28 2013-01-31 Siemens Ag Österreich Procédé de transmission de données d'information
US20140198760A1 (en) * 2011-07-28 2014-07-17 Wilhelm Meyrath Method for transferring informational data
WO2013079512A1 (fr) * 2011-11-29 2013-06-06 Airbus Operations Gmbh Signal de service utilisé en tant que partie d'un signal de masquage de communications terrestres à bord d'un aéronef
US9831981B2 (en) 2011-11-29 2017-11-28 Airbus Operations Gmbh Service signal used as part of terrestrial communications masking signal on board aircraft
FR2999843A1 (fr) * 2012-12-19 2014-06-20 Thales Sa Procede de brouillage de communications dans un reseau controle en boucle ouverte
EP2747328A1 (fr) * 2012-12-19 2014-06-25 Thales Procédé de brouillage de communications dans un reseau controlé en boucle ouverte
WO2014173639A1 (fr) * 2013-04-24 2014-10-30 Rheinmetall Waffe Munition Gmbh Procédé de radiocommunication et système pour le mettre en œuvre
WO2016209335A1 (fr) * 2015-06-25 2016-12-29 Raytheon Company Procédés et appareils de communication de données en utilisant une modulation de bande passante
US9553693B2 (en) 2015-06-25 2017-01-24 Raytheon Company Data communication using bandwidth modulation
US9887799B2 (en) 2015-06-25 2018-02-06 Raytheon Company Methods and apparatus for data communication using bandwidth modulation
KR20200058032A (ko) * 2018-11-19 2020-05-27 국방과학연구소 통신 및 교란을 수행하는 방법 및 시스템
KR102147396B1 (ko) * 2018-11-19 2020-08-24 국방과학연구소 통신 및 교란을 수행하는 방법 및 시스템

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