RU2766432C1 - Radio electronic jamming method - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to means of jamming radio lines. For this purpose, in the method of radio-electronic jamming of radio lines, a receiving-actuating device is placed in a space, where external electromagnetic radiation is artificially limited, also inside this space there is at least one radiating antenna from a noise generator in the range, and outside this artificial space there is a receiver receiving signals in the range, wherein said receiver is connected to a control system, which receives information on the detected signals from the receiver and in turn is connected to a noise generator, to which the control system can give commands based on the embedded algorithm and received information from the receiver to suppress certain frequencies and/or ranges with a certain level.

EFFECT: higher safety of the population.

9 cl

Description

The invention relates to radio engineering and can be effectively used, including the suppression of signals from the radio control lines of mine-explosive devices, when it is possible to localize the receiving-actuating device.

Also, this method can be used for electronic jamming of various other radio transceivers.

There are various devices to prevent the operation of radio-controlled explosive devices (VU).

In the event that a suspicious object is found, in particular, left in a public place, as a precaution, it should not be touched or moved, and all people in the vicinity must be evacuated. Given the danger of a possible explosion of a suspicious object, they try to isolate it in order to reduce the consequences of a possible explosion.

There is also an invention us 2014245879, which contains a closed explosion chamber into which the cargo is introduced and in which real-time conditions are set that correspond to the environmental conditions of the cargo on the intended transportation route. The application of such an invention is too narrow, since it is only directed to the verification of goods that must move along a certain route. At the same time, instead of preventing an explosion, with the help of this invention, special conditions are created for undermining. In addition, it is quite difficult to implement, since it involves the removal of the radio-electronic situation at a sufficiently large distance and time. In addition, this invention is designed only for the case when criminals use only mobile radio networks. In view of the foregoing, we believe that this invention is of little use in practice.

A technical solution is also known - "Method for preventing the initialization of an explosive device" (RU (11) 2728042 (13) C1, published on July 28, 2020), in which a protective dome containing a layer of tissue is used, covering with a dome a suspicious object lying on the surface, different the fact that the dome is made in the form of a frame, moreover, a fabric screening from electromagnetic interference is used as a fabric, and a portable GSM signal suppressor is installed inside the dome and a suspicious object is covered with the dome so that the fabric layer shields signals from the GSM signal suppressor, preventing them from escaping from the outside domes. This solution was chosen as a prototype.

The negative side of this solution is that there is a possibility that with a high transmitter power of the control device or if an intruder comes closer, there is a possibility that the suppressor power is not enough and the VU will be initiated. Also, the disadvantage of this prototype is the use of a GSM jammer, which has a limited number of blocking ranges. After all, an attacker theoretically can use almost any range to initiate a VU over a radio channel.

The technical problem to be solved by the present invention is to increase the efficiency of the suppression of such devices.

The solution of the set technical problem is achieved due to the fact that the claimed method of electronic suppression of radio lines, characterized by placing the receiving-actuating device in a space where external electromagnetic radiation is artificially limited, also inside this space is placed at least one transmitting antenna from the noise generator, and outside this artificial space hosts a receiver that receives radio signals, while this receiver is connected to a control system (hereinafter - CS), which receives information from the receiver about the signals detected in this range and, in turn, is connected to a noise generator, to which the CS can give commands based on embedded algorithm and received information from the receiver to suppress certain frequencies and / or ranges with a certain level.

The control system can be made in the form of a PC or a laptop and can be placed both inside and outside this space.

Spaces for artificial limitation of electromagnetic radiation can be created, for example, by means of a room or by covering the receiving-actuating device with a container, a dome, a quickly erected structure (tent), a room, etc., which are made using a material that shields from electromagnetic interference.

As an EMI shielding material, EMI shielding can be used, for example: Aaronia X-Dream - EMI shielding fabric (100 dB) [http://el-kor.ru/bezehovye-kamery-i -ekrankamery-ekraniruyushchie-materialy/aaronia-x-dream-tkan-elaanimyushchaya-ot-elektromagnitnyh-pomeh-100-db].

This fabric has a frequency range of shielded signals 1 MHz - 30 GHz

Shielding efficiency 70 dB; 99.999999% at 20 GHz

The fabric material is a mixture of copper and nickel, the backing is polyester. Type of shielded signals - HF and LF electric fields. Available size from 1 m2 to 50 m2.

Wireless signals of standards such as GSM and/or DECT and/or BLUETOOTH and/or WLAN do not penetrate through such fabric. For the material, it is preferable to use a shielding material with a maximum absorption coefficient in the range from 20 MHz to 6000 MHz.

As a signal suppressor, for example, the GRIFFON-10T RVU blocker in the range from 20-6000 MHz (https://detsys.ru/) can be used.

Moreover, the noise generator (blocker) can be made with the possibility of emitting interference of various types: barrage, aiming, sweeping, etc.

An AR-6000 receiver with a range from 9 kHz to 6000 MHz can be used as a receiver (http://aor.ru/priemniki/ar-6000.html).

Implementation of the invention

The claimed method of radio-electronic suppression of radio lines is based on the fact that a suspicious object, where a receiving-actuating device is possibly contained, is placed in a space where electromagnetic radiation is artificially limited (hereinafter referred to as space), for example, such a space is formed by covering a suspicious object with a dome made using EMP shielding material. This dome covers a suspicious object (which may contain a receiving-actuating device) lying on the surface, and inside the space (dome) there is at least one radiating antenna from the noise generator. Outside this space (dome), a receiver is installed with the ability to receive radio signals. In this case, the receiver and the noise generator are connected to the control system, to which information is transmitted about the radio signals detected in the range by the receiver and which, based on the specified algorithms and the information received from the receiver, gives a command to suppress or suppress with amplified power of a specific frequency or section of the range to the noise generator. Various algorithms can be set, for example, the noise generator inside the space works to suppress the entire possible range with a certain level of suppression, if the control system receives information about the detection of operating frequencies outside the space with a signal level exceeding a certain level, the control system issues a command to increase the suppression inside frequency data space with the maximum (or selected) level.

This method is used so that, for example, if an intruder fails to initiate a VU the first time, he will probably try to initiate this device by increasing the transmission power or by moving closer to the receiving-executive device. The above method will practically eliminate the possibility of initiating the WU.

Also, this method can be used to suppress other various radio links (for example, when communicating with conventional radio stations).

The technical result of the proposed invention is to improve the safety of the population.

Public safety is ensured by:

1) The receiver detects signals outside the limited space. If there were no receiver, then the control system would not send a command to the noise generator to block (or block with amplified power) a particular band or frequency. Accordingly, this would lead to an increase in the likelihood of a remote detonation and, consequently, would reduce the safety of the population.

2) The use of space limited from EMP will also reduce the likelihood of an explosion and increase the safety of the population, since this space will significantly weaken external signals, including signals for initiation.

3) The use of antennas from the noise generator inside the space limited from EMI will also increase the safety of the population, for the reason mentioned in paragraph 2, but, in addition, experiments have shown some more synergistic effect when using a radiating antenna inside the space limited from EMI. The authors of this patent conducted the following experiment.

In an airtight cylindrical dome (a tank 75 cm high), shielded with 2 layers of shielding fabric -ekraniruyushchaya-ot-elektromagnitnyh-pomeh-100-db) a radio station of the LPD radio station was placed - the range (frequency 433-434 MHz), with a maximum power of up to 5 watts. A second radio station of the same type provided signal transmission. As a result, it was found that signal transmission is possible at a distance of 8 to 20 meters (depending on the orientation of the radio equipment, communication either appeared or disappeared).

During the next experiment, the above radio stations were also used, only they were now located 70 cm from the blocker of this range (for the blocker, the blocker was used in the ranges 433 MHz, 315, MHz, 868 MHz 869 MHz, total output power - 10 W (jammer.su) As a result of the experiment, signs of an emerging connection were observed at distances from 3 to 12 meters (depending on the orientation of radio facilities in space, the connection either appeared or faded)

During the final experiment, the above blocker was placed inside a sealed cylindrical dome (from point 1) and fixed at the top. The distance between the blocker and the radio station did not exceed 70 cm. As a result of the experiment, signs of an emerging connection were observed at distances of not 0.2-1.5 meters! Thus, it can be argued that when the blocker is placed inside the dome shielded with fabric, a “certain” synergistic effect is observed. This is probably due to the fact that, given that the radio waves do not go outside the shielded dome, but are reflected and added up inside the dome, which also affects the additional blocking efficiency! Therefore, when using a blocker inside such a shielded dome, the blocker can be significantly smaller in size with the same efficiency (you can also reduce power and increase battery life).

4) The use of the control system will also lead to an increase in the safety of the population, since it, receiving data from a receiver located on the outside of the space, transmits commands to the noise generator. Being a kind of link. Without SU, this system simply will not function.

Claims (9)

1. A method of electronic jamming of radio lines, characterized by placing a receiving-actuating device in a space where external electromagnetic radiation is artificially limited, also inside this space at least one radiating antenna from a noise generator in the range is placed, and outside this artificial space a receiver is placed that receives signals in the range, while this receiver is connected to the control system, which receives information from the receiver about the detected signals and, in turn, is connected to the noise generator, to which the control system gives commands based on the inherent algorithm, which consists in the fact that if information is received by the system control to detect operating frequencies outside the space with a signal level exceeding a certain level, the control system issues a command to increase the suppression inside the data space of frequencies with a maximum or selected level. 2. The method according to claim 1, characterized in that the space is limited from external electromagnetic radiation by using a dome made using at least one layer of material that shields from electromagnetic radiation. 3. The method according to claim 1, characterized in that the space is limited from external electromagnetic radiation by using a capacitance made using at least one layer of material that shields from electromagnetic radiation. 4. The method according to claim 1, characterized in that the space is limited from external electromagnetic radiation by using a prefabricated structure using a prefabricated structure, made using at least one layer of material that shields from electromagnetic radiation. 5. The method according to p. 1, characterized in that the control system is made in the form of a laptop 6. The method according to claim 1, characterized in that all connections are made using wireless technologies. 7. The method according to claim 1, characterized in that the connections are made using wired technology. 8. The method according to claim 1, characterized in that the noise generator is capable of emitting "target interference". 9. The method according to claim 1, characterized in that the noise generator is capable of emitting "barrage interference".