WO2023077203A1 - Dynamic jamming equipment and method for blocking or interfering with radiocommunication signals to prevent the activation of improvised, radio-controlled explosive devices - Google Patents
Dynamic jamming equipment and method for blocking or interfering with radiocommunication signals to prevent the activation of improvised, radio-controlled explosive devices Download PDFInfo
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- WO2023077203A1 WO2023077203A1 PCT/BR2021/050482 BR2021050482W WO2023077203A1 WO 2023077203 A1 WO2023077203 A1 WO 2023077203A1 BR 2021050482 W BR2021050482 W BR 2021050482W WO 2023077203 A1 WO2023077203 A1 WO 2023077203A1
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- signals
- radio
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- 239000002360 explosive Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000002452 interceptive effect Effects 0.000 title claims abstract description 14
- 230000000903 blocking effect Effects 0.000 title claims description 38
- 230000004913 activation Effects 0.000 title claims description 9
- 238000004891 communication Methods 0.000 claims abstract description 25
- 230000007123 defense Effects 0.000 claims abstract description 9
- 238000006467 substitution reaction Methods 0.000 claims description 14
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/02—Secret communication by adding a second signal to make the desired signal unintelligible
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K3/00—Jamming of communication; Counter-measures
Definitions
- the present invention patent deals with equipment and method for obtaining a dynamic dam for blocking or interfering with radio communication signals, specifically, signals that enable the remote activation of radio-controlled improvised explosive devices, thus guaranteeing the protection of convoys, tactical operations and jamming of communications and drones for defense and public safety.
- the equipment developed to apply the dynamic dam presents means of high criticality due to the difficulty of blocking the entire communication band, for example, 20 MHz - 6 GHz through a waveform whose transmission affects the electromagnetic spectrum of radiocommunication signals blocking remote trigger devices such as remote controls in the VHF band and also ISM bands of 433 MHz, 868 MHz and 915 MHz, Wifi and Bluetooth in the 2.4GHz and 5.8GHz frequencies, communication radios generally in the VHF band and Cellular phones GSM /CDMA/3G/4G, making it impossible to remotely trigger explosives in a given mobile area, thus configuring a high-tech solution applicable to national and international security, as well as to the civil market.
- remote trigger devices such as remote controls in the VHF band and also ISM bands of 433 MHz, 868 MHz and 915 MHz, Wifi and Bluetooth in the 2.4GHz and 5.8GHz frequencies
- communication radios generally in the VHF band and Cellular phones GSM /CDMA/3G/4G, making it impossible to remotely trigger explosives in a given
- SUBSTITUTION SHEET (RULE 26) Exclusive - ZEE Electronic Countermeasure Systems, for protection against unauthorized drones, as well as means of blocking explosives activated remotely 'Improvised Explosive Devices' - RCIEDs and 'Remotely Piloted Aircraft System' - RPAS which consists of a piloted aircraft system remotely commonly used by criminals, vandals, terrorists, suicide bombers and insurgents.
- Aforesaid 'Improvised Explosive Devices' - lEDs - or improvised explosive devices can be carried or delivered in a vehicle, carried, placed, or thrown by a person, delivered in a package or concealed by the roadside, the extension being amount of damage done depends on the size, construction and placement, and whether it incorporates a high explosive or propellant.
- the fast sweep technique consists of a signal generation in which a carrier is shifted quickly in the spectrum, usually in the order of microseconds, in an increasing and decreasing manner within a defined frequency range. Although the signal is transmitted along the band, at each instant of time, the carrier occupies only one frequency at a time.
- the scanning technique can leave gaps that make its use unfeasible in 'Radio Controlled Improvised Explosive Device' - RCIED applications that
- SUBSTITUTION SHEET (RULE 26) require continuous blocking, since a single successful exchange of data between the remote control and the receiving device can result in the detonation of an explosive, and for these cases, the most indicated waveform is the dam.
- CN107666363A which deals with provides an OFDM wireless communication signal interference method.
- a narrowband intermediate frequency analog signal and an analog local oscillator signal are generated.
- the narrowband intermediate frequency analog signal and the local oscillator analog signal are subjected to frequency mixing to obtain a radio frequency interference signal.
- the center frequency of the RF jamming signal is changed by controlling the frequency of the analog local oscillator signal, so that the RF jamming signal cycles through the N subcarriers of an OFDM signal.
- OFDM signal interference is realized.
- Narrowband signal interference is adopted, and the interference signal energy is more concentrated when the interference signal power is limited.
- the interference to signal ratio of a current subcarrier position of the OFDM signal targeted by the interfering signal is larger, and the interference effect is
- SUBSTITUTION SHEET (RULE 26) better.
- a small power amplifier is conveniently adopted and the cost is reduced.
- Size is reduced and broadband interference is realized by adopting frequency sweep mode.
- the bandwidth of the interfering signal can be flexibly controlled within a frequency sweep range, and the method is simple in principle and easy to carry out.
- Size is reduced and broadband interference is realized by adopting frequency sweep mode.
- the bandwidth of the interfering signal can be flexibly controlled within a frequency sweep range, and the method is simple in principle and easy to carry out.
- Size is reduced and broadband interference is realized by adopting frequency sweep mode.
- the bandwidth of the interfering signal can be flexibly controlled within a frequency sweep range, and the method is simple in principle and easy to carry out.
- Document No. RU2746212C1 deals with protection device against radio-controlled explosive devices contains at least one receiving antenna, a radio signal processing unit, at least one power amplifier, at least one transmitting antenna and a power unit, while the radio signal processing, an electro-optical converter, an optoelectronic processing unit for radio signals, an optoelectronic converter.
- At least one optical splitter connected to a fiber optic delay line may be introduced into the unit for optoelectronic processing of radio signals.
- an optical amplifier can be introduced into the unit for optoelectronic processing of radio signals.
- remote activation devices such as remote controls in the VHF band and also ISM bands of 433 MHz, 868 MHz and 915 MHz, Wifi and Bluetooth in the 2.4GHz and 5GHz frequencies
- Another objective of this invention is to present equipment and method for obtaining a dynamic dam for blocking or interfering radio communication signals so as not to trigger radio-controlled improvised explosive devices that have programming via man-machine interface for defining various parameters such as amounts of carriers, spacing between them, scanning speed and others.
- the advantage of the equipment and respective method for obtaining dynamic barrage comprises the combination of the individual positive aspects of the fast sweep and static barrage techniques, where the fast sweep of several carriers maintains the spectral occupation, increasing the blocking persistence in each frequency
- Another advantage lies in the fact that the equipment that makes up the dynamic dam is connected with antennas on the bottom of vehicles aiming at complementing the coverage volume, since the structure of the vehicle itself can cause in regions without signal irradiation, providing gaps for eventual triggering.
- Figure IA presents a block diagram of the architecture of the equipment for obtaining the dynamic dam
- Figure 1B shows a perspective view of the equipment itself, illustrating the modules that make up the channels that operate in a predefined frequency band installed in a 4U 19" chassis for assembly in a military standard box, shown below;
- Figure 1C represents a perspective view of an equipment module illustrating the internal components
- Figure 1D shows a front view of the equipment illustrating the modules that make up the channels installed in 4U 19" chassis for mounting in a military standard box;
- Figures IE and 1F reveal perspective and frontal views of the modules that make up the equipment in question, illustrating the assembly in a military standard box;
- Figure 2 shows a block diagram method for obtaining the dynamic dam obtained by analog generation equipment
- Figure 3 illustrates a block diagram of the method for obtaining the dynamic dam obtained by direct digital generation equipment
- Figure 4 shows a schematic view of the dynamic dam effect obtained by the innovative equipment and method
- Figure 5 represents a graph of blocking capacity
- Figure 6 represents a view of the interface for operating system accessibility and redefinition of new parameters.
- the present patent refers to the "EQUIPMENT AND METHOD FOR OBTAINING A DYNAMIC DAM FOR BLOCKING OR INTERFERING RADIO COMMUNICATION SIGNALS TO NON-ACTIVATE IMPROVISED EXPLOSIVE DEVICES CONTROLLED BY RADIO", more precisely it is equipment (10) and method (MT) for obtaining a dynamic dam (BD) of the type applied to blocking or interfering with radiocommunication signals, specifically, signals (SN) that enable the remote activation of improvised and radio-controlled explosive devices (DE), thus guaranteeing , the protection of convoys, tactical operations and jamming of communications and drones for defense and public safety.
- BD dynamic dam
- SN signals
- DE improvised and radio-controlled explosive devices
- said equipment (10) for obtaining the dynamic dam (BD) can be loaded on a mobile vehicle, for example a vehicle (VT), and which is comprised of one or more boxes (11a), each which is formed by a set of modules (11B) that constitute six channels (C1)/(C2)/(C3)/(C4)/(C5)/(C6) each with an output power of 10W and expandable on demand and wave, each channel (C1)-(C6) operating in a frequency band (Fl)/(F2)/(F3)/(F4)/(F5)/(F6) from 20 to 6000 MHz (see figures IA to 4) where the simultaneous emission of said frequency bands (F1)-(F6) sets up a hybrid wave at all frequencies that interferes with the electromagnetic spectrum of radio communication signals (SN), constantly blocking triggering devices
- DR remote controls
- ISM bands 433 MHz, 868 MHz and 915 MHz, Wifi and Bluetooth in the 2.4GHz and 5.8GHz frequencies
- communication radios generally in the VHF band and GSM cell phones /CDMA/3G/ 4G, making the remote triggering of explosives (DE) or other devices such as drones in a certain area (AR) unfeasible.
- DE explosives
- AR a certain area
- Each box (11a) that makes up the equipment (10) and integrates the modules (11B) can integrate chassis (13a) of the 4U 19" type for mounting in a case (13) military standard (EDAK) for installation in different types of vehicles (VT).
- EDAK military standard
- Each RF module (11B) for producing the blocking and amplification signals at a power level suitable for transmission is composed of three elements, namely: i) 'Software Defined Radio' (SDR) digital module that generates blocking signals, in particular barrier signals; ii) 'RF Front-End' (RFFE) printed circuit board responsible for generating sweep signals for direct transmission or local oscillator signal for frequency conversion of the signal generated by the digital module (SDR); iii) power amplifier (PA) to increase the amplitude level of the signals provided by the board (RFFE).
- SDR Radio'
- RFFE 'RF Front-End'
- PA power amplifier
- Said modules (11B) are connected with 'Motherboard' module
- Backplane (11c) contains an embedded platform
- SBC Single Board Computer
- Said equipment (10) also provides for, specifically, connected to the modules (11B) RF interface (lld) to perform the interconnections of the (RF) modules with the antennas (12A)/(12B) for signal protection in reverse (high VSWR). Furthermore, the interface (lld) samples the signals at lower levels by means of directional couplers for transmission by the lower antennas (12B).
- Said equipment (10) integrates refrigeration module (llf) and AC/DC converter (llg) and is powered by external module (lie) provided with battery (lie'), power supply
- SUBSTITUTION SHEET (RULE 26) uninterruptible power supply (lie") and alternating current generator (lie'").
- Said equipment (10) can be connected to antennas (12A)/(12 B) positioned at the top and bottom of the place where the equipment (10) is shipped, such as a vehicle (VT), and the upper antennas (12A) are monopole type, with vertical polarization and omnidirectional irradiation pattern in azimuth, following military standard, with flexible bases and installed in the upper part of the vehicle (VT) by means of individual supports (not illustrated), while the lower antennas (12B) are composed of low-profile antennas with an omnidirectional irradiation pattern in azimuth and low power capacity, on the order of 1 W.
- antennas (12A) are monopole type, with vertical polarization and omnidirectional irradiation pattern in azimuth, following military standard, with flexible bases and installed in the upper part of the vehicle (VT) by means of individual supports (not illustrated)
- the lower antennas (12B) are composed of low-profile antennas with an omnidirectional irradiation pattern in azimuth and low power capacity, on the order of 1 W
- the parameters for the configuration of the channels (C1)-(C6) operating in the frequency bands (F1)-(F6) can be configured by interface (IF) (see figure 6) man-machine through an accessible platform through a computer or other type of electronic devices (not shown) configuring the operating mode, dam mode, initial and final frequency, among other parameters.
- IF interface
- the method (MT) for obtaining dynamic dam (BD) through the equipment (10) and set of modules (11B) thus comprises the steps:
- the block (Bl) In the modules (11B) the block (Bl) generates an OFDM signal of N carriers with frequency spacing of Af.
- Signals can be generated by different types of circuits, such as D/A converter (Digital/Analog), integrated circuit 'Digital Direct Synthesis' - DDS -, transceiver
- Step (E2) In the sequence, the signals are directed to a low-pass filter (B2), to eliminate signals at harmonic frequencies to minimize the production of unwanted signals at the moment of signal modulation;
- the sweep signal is created by block (B3) of the 'RF Front-End' Printed Circuit Board (RFFE) with ABW band and At sweep time.
- the sweep signal can be generated by a D/A converter, DDS integrated circuit, transceivers, radio modules (11B) defined by software (SDR) and by a PLL integrated circuit with sweep generation capability (chirp or sweep);
- Step (E5) The mixer output signal (B4) is then directed to a band-pass filter (B5) with adequate response to eliminate unwanted intermodulation products resulting from the modulation process.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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PCT/BR2021/050482 WO2023077203A1 (en) | 2021-11-04 | 2021-11-04 | Dynamic jamming equipment and method for blocking or interfering with radiocommunication signals to prevent the activation of improvised, radio-controlled explosive devices |
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PCT/BR2021/050482 WO2023077203A1 (en) | 2021-11-04 | 2021-11-04 | Dynamic jamming equipment and method for blocking or interfering with radiocommunication signals to prevent the activation of improvised, radio-controlled explosive devices |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US8472863B2 (en) * | 2007-12-12 | 2013-06-25 | Bank Of America, N.A. | Method and apparatus for heavy-tailed waveform generation used for communication disruption |
US8502726B2 (en) * | 2004-09-17 | 2013-08-06 | Pegasus Global Strategic Solutions Llc | System and method for suppressing radio frequency transmissions |
EP3410620B1 (en) * | 2017-06-02 | 2021-09-22 | Rohde & Schwarz GmbH & Co. KG | Jamming device and jamming method |
-
2021
- 2021-11-04 WO PCT/BR2021/050482 patent/WO2023077203A1/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8502726B2 (en) * | 2004-09-17 | 2013-08-06 | Pegasus Global Strategic Solutions Llc | System and method for suppressing radio frequency transmissions |
US8472863B2 (en) * | 2007-12-12 | 2013-06-25 | Bank Of America, N.A. | Method and apparatus for heavy-tailed waveform generation used for communication disruption |
EP3410620B1 (en) * | 2017-06-02 | 2021-09-22 | Rohde & Schwarz GmbH & Co. KG | Jamming device and jamming method |
Non-Patent Citations (3)
Title |
---|
ANONYMOUS: "El sistema de contramedida electrónica SCE0100 (JAMMER) es producido en Brasil por IACIT, con tecnología 100% nacional.", INTERFERIDOR/JAMMER, 1 January 2016 (2016-01-01), XP093065165, Retrieved from the Internet <URL:https://docplayer.es/82865350-El-sistema-de-contramedida-electronica-sce0100-jammer-es-producido-en-brasil-por-iacit-con-tecnologia-100-nacional.html> [retrieved on 20230719] * |
P. CUCCARO ET AL.: "Non Uniform Power Allocation Pilot Tone Jamming in OFDM Systems", 2017 40TH INTERNATIONAL CONFERENCE ON TELECOMMUNICATIONS AND SIGNAL PROCESSING (TSP, 2017, pages 152 - 155, XP033232162, DOI: 10.1109/TSP,2017.8075957 * |
RCIEDBLOCKER: "SCE0100. Sofisticado sistema de contramedida eletrônica (INTERFERIDOR/JAMMER)", WHITE PAPER, IACIT, BRASIL, Brasil, pages 1 - 6, XP009553112, Retrieved from the Internet <URL:https://www.pilotopolicial.com.br/wp-content/uploads/2016/07/Jammer-SCE0100.pdf> * |
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