The method and apparatus of radiomodule communication channels
The invention relates to the field of radio, namely the technique of intentional interference, and can be used to suppress the group of users of modern radio communication with unknown numbers using duplex frequency spacing settings of the receiver and transmitter. The technical result is the creation of an effective interference to the group of users of mobile communication systems, the number of which is unknown, in a limited, but well-known area. The method includes the processes of reception of all signals in the emission band of the base station, generating a carrier wave, the formation of interfering signal at the frequencies of mobile subscribers by modulating carrier wave base station signals, the gain of interfering signal and its radiation. In the device radiomodule communication channels that implements the proposed method, added: in the receive path - input filter, the first and second bandpass filters; in the transmitting tract - second microwave amplifier, first and second bandpass filters. In addition, put a crystal oscillator, an intermediate amplifier, a lowpass filter, the first and second attenuators. 2 S. p. f-crystals, 5 Il., 1 PL.The known method of forming interference: EP 0293167 A2, published 30.11.88, bull. 88/48, IPC H 04 TO 3/00. This analog includes receiving a signal of a radiation source, determine the frequency and structural parameters of the signal (carrier frequency, duration of transmission, the start and end of the transmission adjacent friendly "transmitter"), the formation of the structure modulating interfering voltage, the modulation signal of the pathogen obtained by modulating voltage, amplifying and broadcasting interfering signal only after the operation of neighboring transmitter. However, this does not provide similar suppression of the interference of modern communication systems, the use of the s communications RF patent No. 2104616, from 10.02.98, IPC H 04 To 3/00, publ. 10.02.98, bull. No. 4.The method includes receiving a signal of the radiation source, the definition of its parameters and the intensity of the source message at this frequency, the formation of the structure of the modulating voltage, the modulation signal of the pathogen, strengthening and broadcasting noise and interference signals in accordance with the resource allocation suppression (time radiation at the same frequency).The method allows to reduce time of emission of radio interference on the same frequency and use the additional time resource to suppress other sources of radiation. Improving the efficiency of interference in the way that is achieved by the formation rules for radio noise emissions, taking into account the particular protocols of the access channel message transfer.The disadvantage of this method is low efficiency of suppression of modern communication networks with macro - and microcellular structure using the methods of protection from interference based on the frequency channel diversity reception and transmission of information (see Lamkin C. F. Cellular communication. - Rostov-on-don, Phoenix, 1997, S. 12). Under the suppression efficiency refers to the degree of achievement of the required information damage sozdana, 1989. P. 11, 12).There is a method of radiomodule communication channels on the RF patent №2149512 from 4.02.1999, IPC H 04 To 3/00, G 01 S 7/38, publ. 20.05.2000, bull. No. 14.The method includes multiple signal source radiation at the frequencies of the common channel signaling - foxand calling channel fVKthe definition in each cycle of the reception on the frequency number, which initiated the current communication session, and a pair of paired frequencies receive fiand transfer of fjwhere i, j=1, 2, 3... assigned to the subscriber for the current communication session, which radiate and control signals, storing these frequencies, the determination of modulation type and bandwidth of the signal, the signal processing control transfer mode and structure of the modulating voltage, the modulated carrier wave palehovym voltage gain modulated interfering signal, the simultaneous radiation of interfering signals within the loop suppression on each of the paired frequencies (fifj) allocated for the current communication session, the subscriber with the given ID.The method allows for the election (not interfering with other network subscribers) radiomodule subscribers with a set of numerologist, does not provide the simultaneous suppression of the group of users that are spatially limited, but a known area. In addition, the implementation of the method involves relatively high energy and material costs.There is a method of interference with radar stations (options) under the patent of the Russian Federation 2093965 from 29.06.1994, MPK N 04 TO 3/00, publ. 20.10.1997.The method includes receiving a signal in the frequency band of the radiation source, the measurement of the angular coordinates on the radiation source relative to the station interference, the analysis of the structure of the signal of the radiation source, the formation of the carrier oscillation at the frequency of the received signal, the formation of the control signal with optimized according to the rule structure, the formation of interfering signal by modulating carrier wave control signal, the gain of interfering signal and its radiation.On the nature of the impact in this way is provided by the formation of simulating the (misleading) interference, which serve for the making of false information in the suppressed funds (see Palila A. I. Electronic warfare: (Means and methods of suppression and protection of electronic systems). - M.: Voenizdat, 1981, pp. 10-11;Vlad is allows you to significantly reduce the average power of the interference and power consumption of the transmitter.The disadvantages of the method are:low suppression efficiency of modern communication networks with macro - and microcellular structure using the methods of protection from interference based on the frequency channel diversity transmission and reception of information;there is no possibility of simultaneous suppression of a group of users of the system.The closest to the technical nature of the claimed is a method of creating a simulation of interference (see Palila A. I. Electronic warfare. (Means and methods of suppression and protection of electronic systems). M: Voenizdat, 1981, pp. 50-55).Prototype method includes receiving a signal of a radiation source at a frequency fcthe delay of a received signal at timet3the formation of the carrier oscillation, fnat the frequency of the received signal, the formation of interfering signal by modulating carrier wave detainees received signal, the gain of the output of interfering signal and its radiation.In General, the prototype method can be considered as a way of relaying signals introduced by the time delay, which is relevant for jamming radar stations.Prototype method allows SDI). The advantages of this method include lower average power of the interference and power consumption of the transmitter. However, the prototype method has the following disadvantages:can't create interference to a group of users of modern communication networks with macro - and microcellular structure (prototype method and the analogs are relatively narrow band width of the frequency spectrum generated interfering signal); interfering signal is generated at the frequency of the received signal (base station), which does not allow for the suppression of the subscriber or group of subscribers of cellular systems, whose numbers are unknown.The purpose of this invention is to develop a method of suppressing communication channels, providing radiomodule group with unknown rooms, located in spatially limited, but a known area, attract a minimum of material and energy resources.This objective is achieved in that in the known method of radiomodule communication channels, including the reception of the source signal radiation at frequency fcthe formation of the carrier oscillation, fHshaping the input interfering signal by modelirovanie is the infrared radiation take in the emission band of the base station, the frequency of the carrier oscillation is chosen from the conditionwherefithe spacing between the i-th frequency of the base station and the i-th frequency mobile subscriber duplex communication channel, i=1, 2, 3...., N, N is the number of frequency channels in standard cellular communication system,- the average value of the frequency spectrum group of the base station.Listed a new set of essential features due to the fact that the structure of the modulating voltage form as a group (broadband) signal transmitted by the base station and the interfering signal radiate at frequencies of transmission of the mobile correspondents, can achieve the goal of the invention: radiomodule group with unknown rooms, located in spatially limited, but a known area involving a minimum of material resources.The number of known devices that implement the creation mode of simulation noise. Station interference (see RF patent №2054806, IPC H 04 To 3/00, publ. 20.02.1996 g) contains a device for reply interference comprising: a device management and synchronization, the decoder, the N switches of channels, N devices measurement of time intervals is controlled signals.The main drawback is that each time it creates interference on one frequency (the frequency of the signal).Device for the formation of interference by RF patent No. 2108677 IPC H 04 To 3/00, publ. 23.06.1994, further comprises a unit for determining the intensity of transmission and the set of time intervals.The introduction of new elements helped create targeted misleading interference, consistent with the characteristics of communication protocols link layer.The main drawback is that it generates interference on the frequency of the reception signal using a narrowband (simultaneously one source of signal interference.The closest to the technical nature of the claimed device radiomodule communication channels is Automatic station response interference (see RF patent №2103705, IPC G 01 S 7/38, publ. 27.01.98).The device prototype consists of receiving and transmitting paths and path control, and the receive path includes a receiving antenna, the input splitter UHF signals, the device short playback of the carrier frequency, the input microwave power, the first and second microwave svetiteli, and the RF switch, the device reply to the noise, the device registration pulse probing signals, amplitude detector, a phase modulator, the logical element of the ban, the gate driver and control pulses, the control device and the temporary programming device logical processing signals, the first and second shapers low frequency modulating voltage. Receiving antenna connected to the RF input of the input microwave splitter, the first microwave output of which is connected to the microwave input device to briefly play the carrier frequency. The second microwave output of the output coupler, the microwave signal is connected to the UHF input of the input microwave amplifier, the input of the phase modulation which is connected to the first output of the phase modulator. The third microwave output of the input coupler, the microwave signal is connected to the microwave input device, the response to noise, the control input of which is connected to a terminal for supplying the control commands. Fourth microwave output of the input coupler, the microwave signal is connected to the microwave input device check pulse and continuous probing signals, the output signal having a regular pulse of radiation which is connected with the first information the main radiation - with the second information input device control and AC programming. Fifth microwave output of the input coupler, the microwave signal is connected to the UHF input of the amplitude detector, whose input is connected to the video input device check pulse and continuous probing signals to the video input terminal of the gate driver and the modulating pulses. Control input device short playback of the carrier frequency is connected to the first input of the logical processing of signals, and the output gate pulse shaper Gating and modulating pulses, the output of the modulating pulse which is connected with the second input of the logical signal processing. MW output short playback of the carrier frequency is connected with the first high-frequency input of the first microwave-suevites, the second microwave input connected to the microwave output of the microwave amplifier, microwave-release of the first microwave-suevites connected to the UHF input of the microwave switch, the control input of which is connected to the output of the logical element of the ban, the microwave output microwave switch is connected to the first microwave input of the second microwave-suevites, the second microwave input connected to the microwave output device created ihod of which is connected to the transmitting antenna, and the entrance of the phase modulation with the second output of the phase modulator. The output signal of the ban devices reply to the noise connected to the input of the ban logic element prohibition signal input connected to the output logical signal processing. The control input of the phase modulator is connected to the fourth output of the control device of the temporary programming, the first output of which is connected to the control input of the second driver low frequency Gating pulses, the second output - control input of the second driver low frequency modulating voltage. The output of the first generator low frequency modulating voltage connected to the third input of the logic processing signal, a fourth input connected to the output of the second generator low frequency modulating voltage.The device prototype solves the problem of increasing the efficiency of radio suppression by providing adaptive automatic station to the kinds of signals, provides alternate time suppression of several signals.The device prototype also has the disadvantages of:the formation of the interfering signal is on casi, operating in full-duplex mode;in each moment of interfering signal is generated for one user of the network, i.e., the interfering signal is relatively narrow;in the absence of knowledge of non-user cellular communication network, the efficiency of use of the device prototype is negligible.The aim of the invention is to develop a device for the suppression of communication channels, providing simultaneous radiomodule group with unknown rooms, located in spatially limited, but a known area, involving a minimum of material and energy resources.This objective is achieved in that in the known device radiomodule communication channels, consisting of receiving and transmitting paths, and the receive path includes a microwave amplifier and the receiving antenna, and the transmit path includes a transmitting antenna and the first microwave amplifier, optionally in the receive path entered input filter, whose input is connected to the output of the receiving antenna, and the output through the first bandpass filter connected to the input of microwave amplifier, the output of which through the second bandpass filter connected to the input of the first attenuator and the transmit path dopolnitelnoi filter connected to the output of the first microwave amplifier, input is via a second bandpass filter connected to the output of the second attenuator, also, a crystal oscillator, the output of which is connected to the input intermediate amplifier whose output through a low pass filter connected to the first input of the mixer, the second input is connected to the output of the first attenuator and the output to the input of the second attenuator.Listed a new set of essential features due to the fact that introduced new operations, elements, and relationships, can achieve the goal of the invention to provide simultaneous suppression group with unknown rooms, located in spatially limited, but a known area, involving a minimum of material and energy resources.The analysis of the prior art reveals that the analogues, characterized by a set of characteristics is identical for all features of the claimed method and device interference, the communication channels are missing and, therefore, the inventive object has the property of novelty.The study of known solutions in this and related areas of technology in order to identify characteristics that match the distinctive features of the prototype of the signs of the claimed sposobnosti impact of transformations, provided the essential features of the claimed invention, the attainment of a specific result that allows us to consider the claimed object corresponding to the condition of patentability "inventive step".The inventive method and device are illustrated by the drawings, in whichin Fig.1 shows the structure of the radio interface of the cellular communication system of the GSM standard;in Fig.2 illustrates the relative placement of the frequency channels in the forward and reverse channels of the GSM standard;in Fig.3 presents the algorithm interference with the group of users of cellular communication systems with unknown numbers;in Fig.4 shows a block diagram of the device radiomodule communication channels;in Fig.5 shows a block diagram of the repeater RP-2.One of the possible ways of addressing information blockade of the subscriber or group of subscribers of the mobile radio network is radiomodule active channels allocated to them during the session.The possibility of implementing the claimed method radiomodule modern systems with macro - and microcellular structure is explained as follows.It is known that the cellular communication system of the first and especially the second generation (digital), has edited D. B. Zimin. - M.: Radio and communication, 1998. - P. 31). As an example in Fig.1 shows the structure of the radio interface of the GSM system (see page 37). Information transfer in this system is available frames that have a duration 4,615 MS. Each frame consists of eight slots on 577 μs, and each slot corresponds to the channel of speech, i.e., each frame is transmitted to the information of the eight voice channels. Thus, in the GSM standard implemented multiple access TDMA time division. The method of TDMA is that each frequency channel is divided in time between multiple users, for example eight, and provides them in turn.In the GSM 900 standard for information transfer direct channel is allocated band 935...960 MHz, and the reverse - 890...915 MHz, i.e., duplex spacing frequencyfiis 45 MHz (Lamkin C. F. Cellular communication. - Rostov-on-don: Publishing house "Phoenix", 1997, page 39). One frequency channel is a bandf=200 kHz, so that only the full range, with protection strips, placed 124 frequency channels. The Central channel frequency (MHz) associated with its N ratiosreverse channel:fok=890,2+0,2•N, 1124,as illustrated in Fig.2.In the cellular systems of the second generation under the physical channel understand the time slot with a certain number in the sequence of frames of radio interface. In General, the algorithm of the mobile subscriber at the physical level can be described as the transfer of information to the base station in slot j at the frequency i of the direct channel and the transmission of feedback of mobile subscriber in slot j at the frequency i of the backward channel.In these conditions optimized interfering effect involves a preliminary autopsy rooms of slot j of a given number and frequency channel i, the entry in the sync station interference with the base station. However, the implementation of these operations entail significant financial and time costs. This situation is further complicated by the use of air interface jumps in frequency. Its essence is that the carrier frequency for each physical channel is changed periodically. GSM uses a slow ride in a frequency shift in each of the next frame (see Ratynski M. C. fundamentals of cellular communications. / Ed. by D. B. Zimin - M.: Radio and communication, 1998, page 131).Above, the classification is of onenew cellular communication system, rooms were unknown. In these conditions there is no possibility of opening a room slots and values of the frequency channels.The solution of the problem in the context of the stated limitations (subscriber or group of subscribers with unknown rooms is located in one, a priori known, area) is possible as follows.In the first phase are signals at all frequencies of the direct channel. In relation to the standard GSM900 band reception is 935...960 MHz, and D-AMPS - 869...894 MHz. This operation should be performed as close as possible from the suppressed subscribers. This is because each base station is allocated a set of frequency channels (usually from 2-3 up to 64), which do not coincide with the frequency channels of the neighboring base stations. It is therefore very important aspect of the first step is to receive signals direct channel to the base station, on the service which are specified to suppress subscribers. In Fig.3 shows that the base station allocated 10, 83, 101 and 120 frequency channels, which are marked in the work.In the second stage to form a carrier oscillation and the output of interfering signal by shifting a broadband signal of the direct channel in the frequency band of the reverse channel (from the log of these operations is formed of interfering signal the structure in the frequency-time domain is fully consistent with the structure of the suppressed signals. It should be noted another positive aspect is the minimum response time of the proposed method on changes in the forward and reverse channels. The latter is determined by the speed of operation of the transfer signal spectrum of the direct channel in reverse.In the last step, perform the following standard operations: strengthening the interfering signal and its radiation. Due to the fact that the creation of interference given to the subscribers is implemented in the immediate vicinity, then the power of interfering signal Rpmay be the unit of watts. This will be conditionPp>Rc.Theoretical and practical analysis of the effectiveness of the proposed method in comparison with the known analogues showed that its main advantages are:the possibility of radiomodule group of subscribers of cellular communication systems with unknown rooms, located in a famous area;full consistency of the patterns of interference and radio;the minimum response time of the generated interference to the newly signals;structural and structural simplicity it is I easy. The proposed method does not need to perform such typical operations as searching suppressed signals, analysis of the time-frequency patterns, synchronization of interfering signal with the suppressed.In Fig.4 shows a structural diagram of the proposed jamming devices that implements the claimed method. The device comprises a receiving antenna 1, the input filter 2, the first band-pass filter 3, the microwave amplifier 4, the second band-pass filter 5, the first attenuator 6, a mixer 7, the transmitting antenna 8, the second microwave amplifier 9, the first band-pass filter 10, the first microwave amplifier 11, the second band-pass filter 12, the second attenuator 13, a crystal oscillator 14, an intermediate amplifier 15 and the lowpass filter 16. The input filter 2 is connected to the output of the receiving antenna 1, and the output through the first band-pass filter 3 is connected to the input of the RF amplifier 4. The output of the microwave amplifier 4 through the second band-pass filter 5 is connected to the input of the first attenuator 6. The output of the second RF amplifier 9 is connected to the input of the transmitting antenna 8, and the entrance through the first band-pass filter 10 is connected to the output of the first RF amplifier 11. Input the first microwave amplifier 11 through the second band-pass filter 12 is connected to the output of the second attenuator 13. The output of the quartz is connected to the first input of the mixer 7. The second input to the mixer 7 is connected to the output of the first attenuator 6, and the output connected to the input of the second attenuator 13.The operation of the device is as follows. At the preparatory stage of the proposed device is placed as close as possible to the subscribers of a mobile communication system, the suppression of the communications plan. Optimal in this sense, place is to install the device in the center space of their primary residence.The signals induced in the receiving antenna 1 (see Fig.4) is fed to the input of filter 2 (band-pass filter 935-969 MHz). There are signals of a direct channel of a base stationfnkfor example, with the numbers of frequency channels 10, 83, 101 and 120, see Fig.3. The last act on the receive path, a first band-pass filter 3, the microwave amplifier 4 and the second band-pass filter 5. Band-pass filters 3 and 5 are configured to frequency 935-960 MHz. Filter 3 provides additional selection signals direct channel, and the filter 5, the primary selection of these signals, after amplification in unit 4. The input microwave amplifier 4 amplifies the signals in the bandf=30 MHz with an average frequencyCu=60 dB. In re the I. From the output of the unit 5 through the attenuator 6 signals to the second input of the mixer 7.At the first input of the mixer 7 is supplied a carrier with a frequency of 45 MHz from the output of the crystal oscillator 14 through the amplifier 15 and the lowpass filter 16. Task unit 15 is to strengthen the signal of the crystal oscillator, and the block 16 is to filter out a second harmonic of the block 14.At the output of the mixer 7, a signal is generated with a differential frequencyfarticle=fPC-fi=fPC-Mg=fOK,wherefOK- frequency band, the corresponding backward channel of the cellular communication system, for example, 890-915 MHz. Thus the signals received in the frequency bandfPCafter the transformation was in a bandfOKand in the future will be used as the interfering signal. After passing through the attenuator 13, they are sent to the input of the transmitting tract of the device. By analogy with receiving it consists of the first bandpass filter 10, the first microwave amplifier 11 and the second bandpass filter 12. The transmit path is configured to average the frequencyIn the proposed method and device positive effect compared to the prototypes will estimate the number of attracted financial resources.In order to ensure that disrupt the backward channel (see Fig.3) when using the base station four frequencies (the simplest case) will need four device prototype. Thus, each of them must solve the problems of detection, analysis, optimization (synchronization) generated interference. The proposed device solves the problem and in more difficult conditions, when the number of frequencies used in the channel of the base station exceeds 16.In addition, the proposed device inherent structural simplicity: no the device is it has a minimum response time to changes in signal jamming environment, defined by the delay of the signal in the receiving path processing and the mixer.The elements of the claimed device radio suppression communication channels are implemented as follows. The receiving and transmitting paths, namely blocks 1, 2, 3, 4, 5, 9, 10, 11 and 12 (Fig.4 is circled by the dotted line) can be implemented on the basis of the office repeater firm "REMOTEK" RP-2 (RP-6) GSM900 standard. Consider his work (see Fig.5).The signals induced in the outer antenna is fed to the input of the duplexer (input bandpass filter 935-960 MHz). In the allocated base station signals (direct channel), which come into direct (receiving) the path of processing. The latter consists of a bandpass filter selection 935-960 MHz amplifier withf=30 MHz andp=60 dB, and the output of bandpass filter. In this tract is the main selection of base station signals and their strengthening. The output signal of the tract is fed to the input of the second duplexer, and then through the filter 935-960 MHz for office antenna.The signals of mobile subscribers (reverse or transmit channel 890-915 MHz) through an office antenna postupalosya electrical isolation between signals, input and output antennas. Output named filter the signals of mobile subscribers, for example, channels 10, 83, 101 and 120, see Fig.3, is fed to the input of the reverse path of processing. Its structure is similar to the direct path of processing: two bandpass filter and amplifier. The difference is that it is configured with a frequencyand the gain of the amplifier Top=50 dB in the band of 30 MHz. Output reverse path signals of mobile subscribers is fed to the input of the output amplifier with output power of 6 dB. Next, the amplified signals of mobile subscribers (signal return channel) through a band-pass filter 890-915 MHz first duplexer fed to the input of an outside antenna and radiated. Thus, the repeater RP-2 performs the office of a wireless transceiver. It should be noted that the input filter 2 of the proposed device is implemented on a bandpass filter 935-960 MHz diplexer D1(see Fig.5). The second input of the duplexer through a resistance of 50 Ohms is connected to the body to avoid heat. The main technical characteristics of repeaters company REMOTEK are given in table. 1 (see www.remotek.com).Attenuators 6 and 13 are collected in a bridge circuit by adjusting element element PLETRONICS P1100-HCV 45MHz (see www.pletronics.com). The amplifier 15 is implemented using a circuit TC7S04F (see www.toshiba.com). The lowpass filter 16 is implemented using a filter Butterworth (see Baskakov, S. I. Radio circuits and signals: a Textbook. - M.:Higher. school, 1983. - Page 407) fifth order. As the transmitting antenna 8 can be used Omni-directional antenna type pin, discolora etc.Thus the proposed method and device radiomodule communication channels allow you to implement the information blockade group of subscribers of cellular communication systems with unknown rooms, located in a limited, but well-known area, involving a minimum of material and energy resources.
Claims1. How radiomodule communication channels, namely, that take the source signal radiation at frequency fwithgenerate a carrier oscillation of fnform the output of interfering signal by modulating carrier wave received signal, amplify the output of interfering signal and emit it, characterized in that the signal of the radiation source take in the emission band of the base station, the frequency of the carrier oscillation is chosen from the conditioni=1, 2, 3..., N, N is the number of frequency channels in standard cellular communication system;- the average value of the frequency spectrum group of the base station.2. The device radiomodule channels of communication, including receiving and transmitting paths, and the receive path includes a microwave amplifier and the receiving antenna, and the transmit path includes a transmitting antenna and the first microwave amplifier, characterized in that it further in the receive path entered input filter, whose input is connected to the output of the receiving antenna, and the output through the first bandpass filter connected to the input of microwave amplifier, the output of which through the second bandpass filter connected to the input of the first attenuator and the transmit path further introduced the second microwave amplifier, the output of which is connected to the input of the transmitting antenna, and the entrance through the first bandpass filter connected to the output of the first microwave amplifier, whose input is via a second bandpass filter connected to the output of the second attenuator, also, a crystal oscillator, the output of which is connected to the input intermediate amplifier whose output through a low pass filter connected to the first input of the mixer, the second input is connected to the output of the first and
FIELD: technologies for preventing interception of data.
SUBSTANCE: transferred signal is concealed via adding noises to communication line in speech frequency range with linear addition of speech data signal with noise signal of higher level. Concealment is removed via adaptive filtration of received signal with compensation of noise component and separation of data component. Addition of noises to communication line is performed from the side of sensor. Noise signal during addition of noises and adaptive filtration is formed of a sum of counts of several noise series with nonevent sizes via their random querying. At the beginning of each communication session a signal is sent to side of receiver, characterizing order of querying of series, and starting signal, providing for synchronism of noises addition and filtering processes. All operations are performed by means of microprocessors, mounted on both sides of communication line, dependently of loaded software providing for change of direction of transmission and protection of speech data signal. Invention allows to simplify protection while providing for absolute confidentiality of transmitted data.
EFFECT: higher reliability.
6 cl, 4 dwg
FIELD: radio engineering; secret intelligence protected radio communication systems.
SUBSTANCE: proposed radio communication system incorporating provision for suppressing enemy's radio communication means and radio control channels has information subsystem, noise jamming subsystem, noise memory subsystem, information subsystem elements, and subsystem elements interface unit; each element of information subsystem is made in the form of multichannel time-division radio station; each element of noise jamming subsystem is made in the form of time division multichannel radio station, and each of noise jamming subsystem elements is made in the form of barrage jamming transmitter built around noise signal generating driver; used as drivers are self-stochastic generator operating in different frequency bands.
EFFECT: enhanced intelligence protection of communication channels, simplified design, enhanced reliability.
2 cl, 13 dwg
FIELD: methods for protection of an active radar against antiradar missiles.
SUBSTANCE: in the method and device for protection of radar against antiradar missiles accomplished are radiation of sounding signals, detection of antiradar missiles, guidance of anti-aircraft missiles on the antiradar missile, destruction of the anti-radar missile by blasting of the warhead of the anti-aircraft missile, guidance of the anti-aircraft missile at least during a time period directly preceding the blasting of the warhead of the anti-aircraft missile, all this is conducted on the trajectory passing in the vicinity of the imaginary line connecting the antiradar missile and the radar, in this case constantly are determined the distance from the radar to the antiradar missile Dr-arm, from the radar to the anti-aircraft missile Dr-aacm and from the anti-aircraft missile to the antiradar missile Daacm-acm, and at the time moments leading the moments of radiation of the radar sounding signal by value t=(Dr-aacm+Daacm-arm-Dr-arm)/v, where v - velocity of light, commands are given from the radar to the anti-aircraft missile for radiation of a signal simulating the radar signal.
EFFECT: reduced dynamic errors of guidance of anti-aircraft missile on antiradar missile.
3 cl, 6 dwg
FIELD: espionage protection techniques.
SUBSTANCE: method includes serial scanning of target surface by nonlinear locator, recording and processing received response in PC with displaying of positions of semiconductor devices. In case of appearance of response on target surface on command from PC visible laser is enabled, response points are lighted by it, pictured using digital camera and recorded in PC. Responses are process in conjunction with target surface image and integral picture of responses is built. On basis of received picture additionally visually detected are potentially possible places for placing semiconductor devices, and also trajectories of tracing of communications on target surface, structures of inbuilt metal construction and anomalies in said structures.
EFFECT: higher precision, higher efficiency, broader functional capabilities.
FIELD: radio communications.
SUBSTANCE: system has transmitting portion, which contains clock pulse generator 1, first and second D-code generators 21-22, first and second generator of double frequency manipulation 31-32, adder 4, modulator 5, frequencies synthesizer 6, pseudo-random numbers generator 7. said portion is connected through broadcast line 8 to receiving portion, which has demodulator 9, frequencies synthesizer 10, pseudo-random numbers 11, signals selector 12, clock pulses generator 13, block for selecting additional series 14, block for folding additional series 15, solving block 16. new set of significant features provides for possible implementation of distributed receipt with code structure of specific orthogonal quadruple-encoded series without expansion of available frequency resource.
EFFECT: broader functional capabilities, higher trustworthiness, higher efficiency, higher interference resistance.
2 cl, 5 dwg
FIELD: radio engineering, possible radio-technical reconnaissance of radio-electronic means of enemy.
SUBSTANCE: radio-technical reconnaissance station contains antenna device 1, receiver 2, bearing device 3, analyzer 4 of received signal parameters, device 5 for memorizing and processing received information, telemetric device 6, receiving antennae 7-9, block 10 for readjustment, first 11 and second 23 heterodynes, mixers 12-14 and 24, amplifiers 17-19 of first intermediate frequency, detector 20, first 21 and second 31 delay lines, key 22, amplifier 25 of second amplification frequency, multipliers 26,27 and 30, narrowband filters 28,29 and 32, phase detector 33, phase meters 34 and 35, engine 15 and supporting generator 16.
EFFECT: expanded area of reconnaissance and increased number of detected radio-electronic means due to positioning of radio-technical reconnaissance station onboard the helicopter.
FIELD: technology for generating artificial interference for concealing electromagnetic channels leaking speech information.
SUBSTANCE: in accordance to invention, method includes generation, amplification and emission of concealing noise signal, and also substantial changes and additions, namely: noise signal is amplified in mode B or AB, pulse automatic-compensating stabilization of power amplifier powering voltage is utilized, stabilized voltage is filtered by upper frequencies filter, lower limiting frequency is higher than upper frequency of audible spectrum, but lower than frequency of pulse stabilizer.
EFFECT: increased efficiency of method while power for concealed equipment is delivered by industrial alternating-current network.
FIELD: radio engineering, namely, equipment for generating artificial interference, possible use for protecting information from leaking along vibro-acoustic channel from a room.
SUBSTANCE: in accordance to method for protecting speech information along vibro-acoustic channel, interference is generated for masking speech signal, while interference is formed as M-series of pulses with following transformation, while transformation of M-series of pulses is performed in form of generation of vibration impact signals, by which speech signal is multiplicatively masked, while M-series of pulses is generated from period to period in accordance to random rule.
EFFECT: increased efficiency of technical means for information protection, decreased acoustic radiations, interfering with negotiations, radiations, affecting operation of nearby radio-electronic means, and also disclosing a structure of noise interference, decreasing probability of it being filtered.
FIELD: engineering of equipment for counteracting commercial and industrial espionage.
SUBSTANCE: device includes auxiliary transmitting-receiving antenna, antenna commutator, controllable interference generator, radio radiation detector and additional generator of interference with individual antenna. Launch circuit of controllable interference generator is connected to of radio radiation detector. The latter is made with possible recording of beginning of emission of radio interface of cell phone during its communication with external device, determining presence and frequency channel of unsanctioned communication with radio interface and adjustment of frequency of controlled interference generator. Commutator is enabled with possible switching of auxiliary antenna from input of radio emission detector to output of controllable interference generator for suppressing unsanctioned data transfer through radio interface. Output of radio radiation detector is connected to controlling inputs of commutator and controlled interference generator. For additional interference generator, mode of permanent generation of interference is set in radio spectrum of global positioning systems, excluding capability for determining coordinates of cell phone.
EFFECT: increased efficiency of cell protection from unsanctioned pickup of information from radio interface with reliable suppression of attempts of determining current location of cell phone.
3 cl, 1 dwg
FIELD: technology for creating artificial interference for masking speech information in industrial network of alternating current.
SUBSTANCE: device (dwg. 1) contains rectifier 2 and, connected serially, noise signal generator 4, noise signal power amplifier 5 and emitter 6, in noise signal amplifier 5, mode B or AB is implemented, between rectifier 2 and power chain of noise signal generator 4 and power amplifier of noise signal, impulse automatic-compensation voltage stabilizer 8 is inserted, at output of which upper frequency filter is mounted, lower cut frequency of which is higher than upper frequency of audible spectrum, but lower than clock frequency of impulse automatic-compensation voltage stabilizer 8.
EFFECT: increased protection of sound amplification equipment from possible electromagnetic leakage of sound information along power chains.