WO2014173639A1 - Procédé de radiocommunication et système pour le mettre en œuvre - Google Patents

Procédé de radiocommunication et système pour le mettre en œuvre Download PDF

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Publication number
WO2014173639A1
WO2014173639A1 PCT/EP2014/056556 EP2014056556W WO2014173639A1 WO 2014173639 A1 WO2014173639 A1 WO 2014173639A1 EP 2014056556 W EP2014056556 W EP 2014056556W WO 2014173639 A1 WO2014173639 A1 WO 2014173639A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication
radio
uwb
transmitter
modulation
Prior art date
Application number
PCT/EP2014/056556
Other languages
German (de)
English (en)
Inventor
Jürgen Schmitz
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
Publication of WO2014173639A1 publication Critical patent/WO2014173639A1/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
    • H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength

Definitions

  • the invention relates to a method for radio communication between at least two, each having a transmitter and a receiving device having radio stations of a communication network, the radio stations each having a ultrabreitbandiger jammer with high power is assigned to the disturbance of other radio links.
  • the invention further relates to a transmitter or a system for carrying out the method.
  • the invention proposes to make the radio communication during the activation of the jammer by using the ultra-wideband technology, being used as a transmitter of each radio station this radio station associated jammer is used.
  • the pulses generated by the jammer are modulated by means of a UWB modulation method. If, on the other hand, no communication takes place between the subscribers of the communication network, pulses of constant repetition rates are generated by the jammer.
  • Ultra-wideband (http://en.wikipedia.org/wiki/Ultra- broadband (page request of 25.04.201 1)) it is known to use ultra-wideband technology for short-range radio communications
  • a frequency range with a bandwidth of at least 500 MHz or of at least 20% of the arithmetic average of lower and upper limit frequency of the used frequency band is used for the communication, wherein the information is not modulated onto a sinusoidal carrier but through a defined sequence of short pulses is transmitted.
  • the object of the invention is to provide a method of the type mentioned in the introduction. admit, in which a secure radio communication between the participants of the communication network is possible even when operating an ultra-wideband jammer high transmission power. Furthermore, a transmitter is to be specified for carrying out the method.
  • the invention is based essentially on the idea of making the radio communication during the activation of the jammer by using the ultra-wideband technology, being used as a transmitter of the respective radio station of this radio station associated jammer.
  • the pulses generated by the jammer are modulated by means of a UWB modulation method. If, on the other hand, no communication takes place between the subscribers of the communication network, pulses of constant repetition rates are generated by the jammer.
  • the peak performance of the jammers are application specific and can vary from kW to GW depending on the type of protection and ranges.
  • the sensitivity of the receiver is usually ⁇ -100dBm.
  • the peculiarity of the invention thus lies in the combination of using a pulsed jammer directly with relevant techniques as a simultaneous means of communication.
  • Ultra Band Broadband (UWB) pulses can be used concurrently for three essential applications * high bit rate, long range radio / data communication, * triggering of Improved Explosive Device (IEDs), Counter Improvised Explosive Device (ClED), * suppression of existing conventional radio based communication networks ,
  • the jammer according to the invention comprises a modulator which, in the case of communication between the radio stations of the first communication network, modulates the pulses generated by the jamming transmitter by means of a UWB modulation method. If, on the other hand, no (primary) signal (voice or video signal) is present at the modulator, the jamming transmitter only transmits pulses with one constant repetition rate.
  • the jamming pulse itself is used simultaneously for the communication and generation of bit patterns by the UWB modulation methods.
  • Correlation receivers select between right and wrong pulses / signals.
  • a mixture of radio systems is avoided, since in principle no further form of communication (UHF radio, Tetrapol) is required.
  • UHF radio, Tetrapol UHF radio, Tetrapol
  • the high spatial resolution down to a few centimeters due to the pulse rise times enables extremely good localization and action, etc.
  • PAM pulse amplitude modulation
  • PPM pulse phase modulation
  • PDM pulse duration modulation
  • PCM pulse code modulation
  • PFM pulse frequency modulation
  • the data rate is determined by the repetition rate of the pulse generators (e.g. 100kHz corresponds to 100kbit per s) and can be increased by connecting pulse generators in parallel and merging to one output (2x100kHz then equals 200kbps).
  • the limit of the data rate is then limited by the pulse duration itself. At present, pulse durations of about 500 to 1000 ps are realistic at pulse amplitudes up to 100 kV. Thus, data rates of several hundred Mbit per second (seconds) currently arise, depending on the type of modulation. This will become even more expandable in the future. -
  • the transmitter can also be operated as a receiver.
  • a transmitting antenna is then used for reception.
  • the received signal is over passed a coupler at the antenna feed point to the receiver.
  • the receiver used are, for example, comparator circuits and / or correlation receivers. These receivers are capable of receiving individual pulses directly and converting them back into a data stream according to the type of modulation. After a level adjustment (gain, attenuation), the comparator directly detects the input signals. Depending on the type of digital logic (ECL, CMOS, etc.), the comparator signal must be adjusted (eg by a counter). Thereafter, the further processing, for example by a microcontroller.
  • the pulse shapes can be different depending on the send and receive case (phase, pulse duration, modulation) to allow a distinction of cases quite simple and easy to implement.
  • FIG. 1 shows a schematic view of a field mined by booby traps, through which a vehicle convoy moves
  • each of the vehicles 1 to 3 is known to contain a radio station 6, as a rule with at least one transmitter and one receiver device.
  • a jammer 7 the ultra-wideband pulses of high transmission power to disturb an existing radio link 8 between, for example, an opposing command post 9 and booby traps 10, 1 1 generates and radiates via an antenna (18) ( in a practical embodiment, the pulse width of the pulses was 1 ns, the pulse repetition rate 10 kHz and the transmission power 18 MW at an amplitude voltage of 30 kV).
  • the radio communication during the activation tion of the jammer 7 by using the ultra-wideband technology, which is used as a transmitter of the respective radio station of the communication network 5 for the communication of this radio station associated jammer 7.
  • FIG. 2 shows a simplified block diagram of a corresponding UWB transmitter 7, wherein in this exemplary embodiment, an amplitude modulation of the pulses (PAM) takes place for transmitting a voice or image communication.
  • PAM amplitude modulation of the pulses
  • the UWB transmitter 7 comprises in simplified form a pulse generator 13 for generating very short and thus broadband pulses, which is followed by a modulator 14, which can modulate the coming of a unit 15 communication signals (voice or video signals) to the pulses.
  • the modulated pulses then pass via a power amplifier (or power pulse generator) 16 and possibly a bandpass filter 17 to an antenna 18 and are radiated from this.
  • the pulses generated by the pulse generator are amplified unmodulated (i.e., at constant repetition rates) from the power amplifier 16 and radiated via the antenna 18.
  • a not shown in detail receiving device of the corresponding radio station can essentially correspond to known receivers of UWB systems whose signal modulation is done by means of PAM or similar. However, care should be taken that due to the extremely high transmission power of the transmitter 7 an override or even destruction of the components and functional groups of the receiving device is avoided.
  • the jammer 7 can also be operated as a receiver.
  • the transmitting antenna 18 then also serves for the reception.
  • the received signal is routed via a coupler at the antenna feed point to the receiver.
  • the receiver used are, for example, comparator circuits and / or correlation receivers. After a level adjustment (gain, attenuation), the comparator directly detects the input signals. Thereafter, the further processing, for example, by a microcontroller, with the aim of obtaining information from the received signal (demodulation). This can solve the problem of high transmission be bypassed.
  • the invention is of course not limited to the described embodiment.
  • another modulation method such as a phase modulation, etc., may be used instead of an amplitude modulation.
  • the enemy radio links to be disrupted may also be hostile communication networks.

Abstract

L'invention concerne un procédé de radiocommunication entre au moins deux stations radio (6) d'un réseau de communication (5) comprenant chacune un émetteur (7) et un récepteur. Ces stations radio (6) sont associées chacune à au moins un brouilleur ultra large bande (7) qui selon le type de protection et la portée possède une puissance d'émission (puissance crête) allant de quelques kW jusqu'au GW et qui sert à brouiller d'autres liaisons radio (8). Selon l'invention, pour permettre une communication radio sûre entre les abonnés du réseau de communication (5) même lorsque le brouilleur (7) est actif, la communication radio pendant l'activation du brouilleur (7) se fait au moyen de la technologie ultra large bande, en utilisant comme émetteur (7) pour la station radio (6) le brouilleur (7) respectivement associé à ladite station radio (6). Dans le cas d'une communication entre les stations radio (6), les impulsions générées par le brouilleur (7) sont modulées au moyen d'un procédé de modulation ULB. Par contre, en l'absence de communication entre les abonnés du réseau de communication (5), le brouilleur (7) génère des impulsions dont les fréquences de répétition sont constantes.
PCT/EP2014/056556 2013-04-24 2014-04-02 Procédé de radiocommunication et système pour le mettre en œuvre WO2014173639A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310007033 DE102013007033A1 (de) 2013-04-24 2013-04-24 Verfahren zur Funkkommunikation und System zur Durchführung des Verfahrens
DE102013007033.3 2013-04-24

Publications (1)

Publication Number Publication Date
WO2014173639A1 true WO2014173639A1 (fr) 2014-10-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/056556 WO2014173639A1 (fr) 2013-04-24 2014-04-02 Procédé de radiocommunication et système pour le mettre en œuvre

Country Status (2)

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DE (1) DE102013007033A1 (fr)
WO (1) WO2014173639A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1471650A2 (fr) * 2003-04-23 2004-10-27 Rheinmetall W & M GmbH Procédé de réception sans interférences avec l'opération d'un brouilleur
US20060164282A1 (en) * 2005-01-26 2006-07-27 Duff William G Method and apparatus for protecting personnel from rf-triggered explosive devices (rted) using ultra-wideband (uwb) transmission
WO2010032237A1 (fr) * 2008-09-18 2010-03-25 Netline Communications Technologies (Nct) Ltd. Système et procédé pour coordonner plusieurs dispositifs de brouillage
US20100277371A1 (en) * 2007-09-07 2010-11-04 Rheinmetall Waffe Munition Gmbh True time delay systems with array antenna for the spatially changeable radiation pattern for maximum power ultra-wideband pulses
DE102011079972A1 (de) * 2011-07-28 2013-01-31 Siemens Ag Österreich Verfahren zum Übertragen von Informationsdaten

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1471650A2 (fr) * 2003-04-23 2004-10-27 Rheinmetall W & M GmbH Procédé de réception sans interférences avec l'opération d'un brouilleur
US20060164282A1 (en) * 2005-01-26 2006-07-27 Duff William G Method and apparatus for protecting personnel from rf-triggered explosive devices (rted) using ultra-wideband (uwb) transmission
US20100277371A1 (en) * 2007-09-07 2010-11-04 Rheinmetall Waffe Munition Gmbh True time delay systems with array antenna for the spatially changeable radiation pattern for maximum power ultra-wideband pulses
WO2010032237A1 (fr) * 2008-09-18 2010-03-25 Netline Communications Technologies (Nct) Ltd. Système et procédé pour coordonner plusieurs dispositifs de brouillage
DE102011079972A1 (de) * 2011-07-28 2013-01-31 Siemens Ag Österreich Verfahren zum Übertragen von Informationsdaten

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