How radiomodule communication channels
(57) Abstract:Usage: the invention relates to radio engineering, in particular to techniques for creating artificial interference and, in particular, can be used for suppression of radio transmission using packet technology, but also as a way of imitation of interfering signal during adjustment and the estimated bandwidth of radio transmission. The aim of the invention is to develop a method of suppressing that enhance the effectiveness of the interference is achieved by forming intentional interference, taking into account the particular link-layer protocols. The method includes a process of forming a signal to set the operation mode of the control device of the transmission and the structure of the modulating voltage, which responds to the intensity of the transmission channel. This leads to less time radiation interference on one frequency and allows the use of the released resource to suppress other sources of radiation. 1 C.p. f-crystals, 6 ill. The invention relates to radio engineering, in particular to techniques for creating artificial interference and, in particular, can be used to suppress the radio peredacha and the estimated bandwidth of radio transmission.Known methods of forming the interference (see wakin S. A., Shustov L. N. The basics of jamming and electronic reconnaissance. - M.; Soviet radio, 1968, S. 443; Palii, A., And Electronic warfare. - M.: Military publishing house, 1989, S. 350), which includes the reception signals of the radiation sources, the determination of the parameters of these radiations (carrier frequency, modulation types and spectrum width), the formation of the structure of the modulating voltage, the modulation signals of pathogens obtained by modulating voltage, amplifying and broadcasting interfering signal.However, the known methods provide radiation of interference without considering the peculiarities of protocols data link layer control information channel and access to the transmission medium) used in modern radio packet information, which leads to significant time radio noise emissions for achieving a given effect disruption of the packet radio network.The closest in technical essence to the invention is a method of forming interference described in the book: paly A. I. Electronic warfare. - 2nd ed., Rev. and supplementary): Military publishing house, 1989, S. 34, Fig. 2.11. the prototype method is vkluchaja voltage (see pages 15-17 of the said book), the modulation signal of the pathogen, strengthening and broadcasting noise and interference signals.However, the prototype method has the following disadvantages: low efficiency of suppression networks using packet technology, due to the fact that the implementation of this method small duration (10-100 MS) messages and significant hardware delay (0,5...1,0) station interference, making it impossible for the reply interference in a short time interval of the radiation package repression; large energy and time costs due to the need to create a continuous noise due to random moments of the beginning of the packet; the impossibility of simultaneous suppression of multiple radiation sources one station interference.The aim of the invention is to develop a method radiomodule communication channels that enhance the effectiveness of the interference while reducing the time and energy cost of achieving a given effect suppression, and achievement opportunities at a constant resource station interference suppress multiple radiation sources operating in different packet radio networks.Post the crystals of radiation sources, determination of their parameters, the formation of the structure of the modulating voltage, the modulation signals of pathogens, strengthening and broadcasting noise and interference signals, after measuring the parameters of received signals of the radiation sources at frequencies f1, ...,fiadditionally, in a given interval of time TCsequentially, starting with the source signal radiation at frequency f1to measure the total time ti(i=1,2,3,...), during which no reception at frequency fi. Then generate control signals that specify the operation mode of the control device of the transmission and the structure of the modulating voltage. Further modulate the signals of pathogens, strengthen them in the transmitter noise and emit in the broadcast mode, the specified signal of the control device of the transmission, during the time interval ti. Then calculate the released time resource suppression formula . These steps, starting from the total measurement time tirepeat up until the condition > ti+1. The signal that specifies the operation mode of the control device of a transmission, includes: configuring the agent on one of the detected frequencies (f1f2f
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.