RU2717229C1 - Apparatus for counteracting unauthorized transmission of control information - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to means of controlling mines and other explosive objects having radio fuses and is intended for protection against radio-controlled explosive devices. Device comprises series-connected first voltage source 1, first capacitor 2 of first capacitance storage 3, first controlled switch 4, second voltage source 5, second charge device 6 of second capacitance storage 7, second controlled switch 8, outputs of switches 4 and 8 are connected together and connected to inputs of third controlled switch 9 and fourth controlled switch 10. Output of third controlled switch 9 is loaded on antenna 11, and output of fourth controlled switch 10 is loaded on antenna 12. Antennas are connected to matching load resistors (not shown). Antennae can be made of extended copper cable (tube) or radiating cable and have different length. Control device 13 is connected to charge devices 2 and 6 of capacitance accumulators 3, 7 respectively and with controlled keys 4, 8, 9, 10. Capacitive accumulators 3 and 7 have different polarity to form bipolar voltage pulses in antennas.

EFFECT: high probability of guaranteed radio suppression at the same energy density of the interference signal in the protected range.

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Description

The invention relates to means of combating mines and other explosive objects having radio fuses and is intended to protect against radio-controlled explosive devices by blocking the unauthorized transmission of radio fuse control information over a radio channel, and can also be used to protect against unauthorized transmission of any information over a radio channel in a wide range previously unknown radio frequencies.

Known protection devices that can be used to prevent the operation of radio fuses, for example [1], containing a serially connected frequency driver, a broadband power amplifier and a broadband antenna system that create a blocking noise in a wide frequency band in the form of amplified "white" noise. In this and similar devices, the power of the emitted interference at each specific suppressed frequency is small, since the integrated power of the transmitter is “washed out” over the entire wide spectrum of frequencies, as a result of which only very low-power unauthorized information transmitters can be suppressed.

A device for blocking radio fuses, containing several (n) modules of the same type, each of which includes a serially connected frequency driver, amplifier and antenna, while all modules simultaneously operate in non-overlapping subbands of the protected frequency range [2]. This known device allows you to radiate high power in each frequency subband, sufficient to protect against radio-controlled explosive devices. One of the disadvantages of such a device for blocking radio fuses is an increased n-fold integrated radiation power, where n is the number of modules used. An increase in the integral power of the interference transmitter is undesirable, because of a significant increase in power consumption, dimensions and mass.

A device for blocking radio fuses [3] (prototype), comprising n frequency drivers, a switch, a pseudo-random pulse sequence generator, a matching device connected between a broadband power amplifier and a broadband antenna system, and a performance regulator are known.

The algorithm of this device allows you to quickly adapt it to a change in the radio frequency environment.

However, the device cannot provide guaranteed protection in a given frequency range, because it takes time to monitor the radio environment and is in constant search, decision making mode and blocking the values of the changing frequencies of the functioning transmitters.

The objective of the present invention is to increase the reliability of protection against unauthorized transmission of control information of radio fuses via a radio channel in a given range of protected radio frequencies without increasing the integrated output power of the device, its power consumption, dimensions and mass.

The technical result of the proposed device for protection against radio-controlled explosive devices is to increase the likelihood of guaranteed radio suppression with the same energy density of the interfering signal in the protected range, simplifying the device and increasing its reliability.

The technical result is achieved due to the fact that a second radiating antenna, a second voltage source, two capacitive electric energy storage devices, two controlled charge devices are introduced into a device for blocking unauthorized transmission of control information containing a first radiating antenna, a first electric energy source, a first controlled key. capacitive storage, a second managed key for communication of the second capacitive storage with radiating antennas, a control device, the third and fourth controlled keys for communication of the first and second transmitting antennas with capacitive storage, the first and second transmitting antennas are made in the form of two parallel radiating cables, with the possibility of simultaneous or alternating connection through the third and fourth controlled keys, respectively,

the first voltage source is connected to the first controlled charge device of the first capacitive storage connected to the first capacitive storage, the output of which is connected to the first managed key, the second voltage source is connected to the second controlled charge device of the second capacitive storage connected to the second capacitive storage, the output of which is connected to the second managed key, the outputs of the first and second managed keys are connected and connected to the inputs of the third and fourth control of the keys loaded on the first and second antennas, respectively, the control device is connected to the first and second controlled charge devices, with the first, second, third and fourth controlled keys, the radiating antennas have different electrical parameters, and the second voltage source has a polarity opposite to the first voltage source .

New features that ensure the achievement of a technical result are additionally introduced

a second radiating antenna, a second voltage source, two capacitive electrical energy storage devices, two controlled capacitive storage charge devices, a second managed key for connecting the second capacitive storage device with radiating antennas, a control device, a third and fourth controlled key for communicating the first and second transmitting antenna with capacitive drives, the first and second transmitting antennas are made in the form of two parallel radiating cables, with the possibility of simultaneous or alternating connection through third and fourth controlled keys, respectively, the first voltage source is connected to the first controlled charge device of the first capacitive storage connected to the first capacitive storage, the output of which is connected to the first managed key, the second voltage source is connected to the second controlled charge device of the second capacitive storage connected to the second capacitive storage, the output of which is connected to the second managed key, the outputs of the first and second managed keys are connected are connected to the inputs of the third and fourth controlled keys loaded on the first and second antennas, respectively, the control device is connected to the first and second controlled charge devices, with the first, second, third and fourth controlled keys, the radiating antennas have different electrical parameters, and the second the voltage source has a polarity opposite to the first voltage source.

Such a technical solution, together with new features and new connections between its elements and blocks, provides:

increasing the energy efficiency of the device, as the efficiency in the conversion and transmission of EMP into space is higher than that of systems using amplifiers,

the ability to control the power of the interfering signal and the width of the protected range without instrumental reconfiguration of the device in the laboratory

increasing reliability, reducing the number of functional units (lack of a full monitoring system, radio environment analysis system),

universality of suppression of all types of modulation,

high instantaneous energy density of the interfering signal compared to prototypes and analogues,

reducing the dimensions, mass and power consumption of the device to achieve the specified reliability of protection, without increasing the integrated power,

increased probability of guaranteed radio suppression at the same energy density of the interfering signal,

simplification of the circuitry, and, consequently, the cost of the device.

This technical solution is aimed at increasing the energy efficiency of the device while increasing the likelihood of guaranteed radio suppression in the protected range due to the destruction of the information part of the suppressed signals, and overloading the input paths, with the same energy density as the prototype in the protected range.

In FIG. 1 shows a structural diagram of the inventive device, FIG. 2 is an exemplary view of a sequence of generated voltage pulses that differ in amplitude, polarity, frequency, duration, shape (conventionally shown).

The device comprises series-connected the first voltage source 1, the first charge device 2 of the first capacitive storage 3, the first controlled key 4, the second voltage source 5, the second charge device 6 of the second capacitive storage 7, the second managed key 8, the outputs of the keys 4 and 8 are connected together and connected to the inputs of the third managed key 9 and the fourth managed key 10. The output of the third managed key 9 is loaded on the antenna 11, and the output of the fourth managed key 10 is loaded on the antenna 12. The antennas are connected s to the matching load resistor (not shown). Antennas can be made of an extended copper cable (tube) or radiating cable and have different lengths.

The control device 13 is connected with the charge devices 2 and 6 of the capacitive drives 3, 7, respectively, and with the keys 4, 8, 9, 10. The capacitive drives 3 and 7 have different polarity for the formation of bipolar voltage pulses in the antennas 11 and 12.

The operation of the claimed device is as follows.

Capacitive storage devices 3 and 7 are charged by signals from the control device 13 of the charge devices 2 and 6, respectively, to the calculated voltage levels. The pulse from the control device 13 of the estimated duration closes the first managed key 4, which discharges the capacitive storage 3 to a system of antennas 11 and 12, the controlled keys 9 and 10 are closed. In this pulse discharge, a short electromagnetic pulse is formed on the antenna. Further, the process along this branch (sequentially blocks 1, 2, 3, 4, 9, 10, 11, 12) is repeated.

At the end of the discharge of the first capacitive storage 3 by a pulse signal from the control device 13 of the estimated duration, the second controlled key 8 is closed, which discharges the capacitive storage 7 to the antenna system 11 and 12, while the controlled keys 9 and 10 are closed. In this given pulse discharge, a short electromagnetic pulse of opposite polarity is formed on the antenna, in contrast to the discharge of the capacitive storage 3 (Fig. 2). The described process with closed managed keys 9 and 10.

The keys 9 and 10 in the process of counteraction can be in the following positions: a) both are closed simultaneously, b) the first is closed - the second is open, or c) the second is closed, the first is open. In this case, due to changes in the electrical parameters of the load during the discharge, depending on the connection option of the keys, EMRs of various shapes are formed, and, therefore, with different spectral components. When designing, it should be sought that, when implemented, the discharge pulse is close in shape to the delta pulse.

The control device provides the required frequency and period of generation of electromagnetic pulses, their amplitude depending on the voltage on the capacitive storage, as well as the duration and shape of the voltage pulse on the antenna, depending on the totality of its electrical parameters and capacitive storage with a key.

The parameters of the transition process of the discharge in the system of a capacitive storage, key, antenna depend on the reactive parameters of its constituent elements. By changing by connecting a different number of antennas, or antennas with different electrical characteristics, the parameters of the discharge circuit change, as a result, the shape of the generated EMP changes, and, consequently, the spectrum of the harmonic components of the EMP generated into space. The number of spectral components and their power depend on the shape of the discharge electromagnetic pulse.

The device allows you to quickly change the power of the emitted EMP, to vary the power spectrum both in terms of expanding the range and changes in the density of the spectral components, to vary the frequency of the supply of EMP pulses.

The choice of the duration and shape of the pulse is determined by the desired range of protected frequencies.

Thus, this system with a sequence of controlled discharges to an antenna with variable electrical characteristics in the process of protecting a given frequency range can increase the probability of radio suppression, and due to the new set of features and the interaction algorithm of nodes corresponding to the declared features, it simplifies the device and reduces its overall dimensions , with a general increase in the efficiency of radio suppression.

With a decrease in the duration of the front of the acting field, the penetration of electromagnetic fields through inhomogeneities in the housings increases and the amplitudes of the induced currents and voltages at the outputs of the antenna-feeder devices, cables and wires located outside the screens increase, which leads to the suppression of unauthorized information transmission channels.

Sources of information

1. Ivliev S., Maistrenko N. et al. Search and disposal of explosive devices. - M.: Fund for Economic Security, 1996.

2. Petrenko E.G., Linkok A.A., Yakubchik A.Yu. Device for blocking radio fuses, patent N 2100752 from 11.22.96, MKI F41H 11/12, publ. BI N 36, part 11, 1997, p. 391.

3. Battalov A.M., Gordon O.I., Konoplev V.A., Odnopalov I.A. Device for blocking radio fuses patent N 2131645 from 1998-05-26, MKI F41H 11/12, H04K 3/00

Claims (3)

A device for countering unauthorized transmission of control information, comprising a first radiating antenna, a first source of electrical energy, a first controlled key, characterized in that a second radiating antenna, a second voltage source, two capacitive electric energy storage devices, two controlled capacitive storage devices, a second managed key for communicating the second capacitive storage device with radiating antennas, a control device, a third and fourth controlled key for communicating the first and second transmitting antennas with capacitive drives, the first and second transmitting antennas are made in the form of two parallel radiating cables with the possibility of simultaneous or alternating connection through rety and fourth driven keys, respectively, the first voltage source is connected to the first controlled charge device of the first capacitive storage connected to the first capacitive storage, the output of which is connected to the first managed key, the second voltage source is connected to the second controlled charge device of the second capacitive storage connected to the second capacitive storage, the output of which is connected to the second managed key, the outputs of the first and second managed keys are connected and connected to the inputs of the third and fourth control keys, loaded on the first and second antennas, respectively, the control device is connected with the first and second devices of controlled charge, with the first, second, third and fourth controlled keys, radiating antennas have different electrical parameters, and the second voltage source has a polarity opposite to the first source voltage.

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