How radiomodule communication channels
(57) Abstract:The invention relates to radio engineering, in particular to techniques for creating artificial interference, and, in particular, can be used to suppress modern radio networks with macro - and microcellular structure. The technical result is the suppression of ensuring the establishment of effective interference is achieved by using the information transmitted by the network in a common channel signaling. This is achieved in that the method includes the processes of multiple reception of messages transmitted in the common channel signaling bit recording service personnel, identifying their information part and read from it the value of the channel number assigned to the session, as well as the formation of interference simultaneously on two frequencies. By using the information about the communication channel it is possible to avoid wasting time searching the active channel, in a timely manner to adjust the jammer assigned frequency band and to suppress the transmission of information in a duplex communication channel. 1 C.p. f-crystals, 4 Il. The invention relates to the field of radio, namely the technique of creating an artificial interference and, in particular, can be ispolzuyuyuschih duplex frequency spacing settings of the receiver and transmitter, as well as network management for common channel signaling, in addition, as a method of simulation of interfering signal during adjustment and the estimated bandwidth of the aforementioned networks.The known method of forming interference: paly A. I. Electronic warfare. - M. : Military publishing house, 1989, S. 34, Fig. 2. 11. This analog includes receiving a signal of the radiation source, the definition of the parameters of the signal (carrier frequency, modulation type and bandwidth), the formation of the structure modulating interfering voltage, the modulated carrier wave palehovym voltage gain modulated interfering signal and its radiation in the air. However, this analogue has a drawback - it provides the suppression of radio interference only radio subscribers which operate on the same frequency in simplex mode (sequential operation of the transceivers of the source and the receiver of the message) and not able to reliably suppress a modern communication system that uses the effective methods of dealing with the fading of the signal and noise in the communication channel based on the frequency separation of the channels transmit and receive (full duplex spacing frequency between channels of direct and inverse transfer).The closest to the technical nature of the claimed method is radiomodule communication channels according to the patent of Russian Federation N 2104616, from 10.02.98, IPC H 04 To 3/00, publ. 10.02.98, bull. N 4, EN 2104616 C1.Prototype method includes: receiving a signal of the radiation source, the determination of its carrier frequency, type of modulation, the width of the spectrum and the intensity of the source message at this frequency, the formation of the structure of the modulating voltage, the modulated carrier oscillation, the gain modulated interfering signal and the emission of air in accordance with established distribution, the Republic of the seed radiation interference on one frequency and to use the additional resource to suppress other sources. Improving the efficiency of interference in the way the prototype is achieved by the formation rules for radio noise emissions taking into account the particular protocols of the access channel message transfer. (Note: the effectiveness of suppression in the method prototype is understood as the achievement of a given level of suppression of the communication channel when the minimum required for these energy costs).The disadvantage of the prototype 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). This is due to the following circumstances:
small duration (10-100 MS) messages in modern adaptive communication systems and significant hardware delay (0.5-1.0) stations interference makes it impossible to reply to interference in a short time interval radiation service message about switching to another pair of operating frequencies;
significant time spent on the search for radiation transceivers, gone from under interference, do not allow them to detect and disrupt the transmission of si (forward and reverse) are separated by frequency that is not possible to reliably block the transmission of signals carrying information about the deterioration of one of the channels, which can serve as the basis for making decisions about switching to another pair of operating frequencies.The purpose of this invention is to develop a method radiomodule communication channels that enhance the effectiveness of the interference of modern digital networks (systems) communication, which in accordance with the concept of intelligent digital communication network with macro - and microcellular structure using effective methods of dealing with the fading of the signal and noise in the communication channel based on the frequency separation of the channels transmit and receive (full duplex spacing frequency between channels of direct and inverse transfer).This objective is achieved in that in the known method of radiomodule communication channels, including the reception of signals from the radiation source, the definition of its parameters (carrier frequency, type of modulation, the spectrum width of the signal), the control signal forming transfer mode and structure of the modulating voltage disturbances, the modulated carrier wave palehovym voltage gain modulated interfering article repeatedly at a frequency fkcommon channel signaling. In each round will determine the values of a pair of conjugate frequencies of reception fiand transfer of fjassigned to another communication session. Then remember these frequencies. Moreover, the interfering signal within a loop suppression emit simultaneously at each of the paired frequencies. To determine the pairs of paired frequencies receive fiand transfer of fjrecord the received service message bit. Then from this message allocate the data portion from which the read is non frequency channel assigned to the transmission of messages in the next session. Then assign the number of the frequency channel corresponding value of the operating frequency of the reception fi. The value of the transmission frequency fjassigned for reverse transmission of messages is calculated by the expression fj= fi-f, where f is the frequency separation between the frequencies of transmission and reception.Specified a new set of essential features due to the fact that it takes into account information about the two spaced frequency channels of transmission of messages transmitted by the communication system allows you to:
to reduce costs and save time, inevitably necessary from the Chikov noise at a known frequency;
in a timely manner to suppress control (reflexive or service) message carrying the information about the deterioration of the quality of the communication channel and/or switching to a different pair of frequencies and thereby provide a reliable suppression, full duplex communication channel, depriving communications system output capabilities suppressed channel under interference.The analysis of the level of technology has allowed to establish that the analogues, characterized by a set of characteristics is identical for all features of the claimed technical solution is available, which indicates compliance of the claimed method of patentability "novelty". Search results known solutions in this and related areas of technology in order to identify characteristics that match the distinctive features of the prototype of the features of the declared object, showed that they do not follow explicitly from the prior art. The prior art also revealed no known effect provided the essential features of the claimed invention transformations on the achievement of the technical result. Therefore, the claimed invention meets the condition of patentability "inventive step".The claimed method is illustrated in the drawings, the cat is, ispolzuya frequency separation between channels forward and reverse transmission;
in Fig. 2 explains the operation of a modern communication system with micro - and macro-cellular structure, which shows the interaction of the transceivers of the base station with a group of subscriber stations located in the duty mode of reception - 1, and the individual subscriber transceivers in the active mode - 2 (PfP receiver, Send the transmitter);
in Fig.3 shows a block diagram of station interference implementing the claimed method of radiomodule communication channels;
in Fig.4 shows the structure of a frame transmitted by the base station in the common channel signaling in the management of subscriber transceivers.The possibility of implementing the claimed method radiomodule modern digital communication network with macro - and microcellular structure are explained as follows. It is known that to control the operation of subscribers in such networks use a common channel signaling (ACS). In this channel, working on a dedicated him to the frequency fkpassed all employee information management of subscriber transceivers (see Fig. 2 and Fig. 4). Emission frequency base stations (BS) when the spacing between neighboring kanallar communication channel;
fBSMP- initial frequency range of the radiation of base stations,
i.e., frequency channels are numbered from left to right on the frequency axis (from minimum to maximum frequency). The frequency range of the radiation of mobile stations (MS) defined rigid duplex spacing f and can be calculated in two ways: either by the expression fj= fi-f; or by the formula
where nj=1, 2, 3,... is the number of the communication channel;
fMsmp- initial frequency range of the radiation of mobile stations.Access to working channels in a communication system is only possible within the stated capacity in accordance with the frequency plan.Service frames that are sent to the ACS consists of N data bits contain the number of the called subscriber (X1-X7), the channel number assigned to the subscriber for the communication session (N1-N3) and other service information: P; Y1, Y2; J1 - J3 (see Lamkin C. F. Cellular communication. - Rostov-on-don: Phoenix, 1997, S. 62, Fig. 29.). Service commands intended for one subscriber may consist of several frames transmitted in a row. Each subscriber transceiver after power is automatically configured the> highlights of their information content and checks for a match called number (X1-X7) with its own number. Call this subscriber (i.e., when a match is accepted and private rooms) reading assigned for session channel number (N1-N3) and recalculation of the rooms at the frequency fi. Next, the subscriber transceiver goes with ACS and is configured for connecting the receive frequency fiwhere he is given the connection with the subscriber, initializebase call. The relationship between these subscribers via the base station. The exchange of information between the base station and subscriber transceivers is in full-duplex mode. The value of the paired transmission frequency fj(for subscriber transceiver) is calculated according to the formula fj= fi-f. Having information about both paired frequencies, subscriber transceiver configures the receiver to one of them is fiand transmitter to another-fj. After communication, the transceiver automatically returns to the ACS and waiting for a new call until the next cycle). Describes the operating procedure illustrated by the scheme Ave is alisova, for example, using station interference, one of the variants of the structural scheme of which is shown in Fig. 3. The signal ACS provides the receiver 3 according to the commands of the control device 1 is supplied through the processing unit and MUX 2. The measurement signal is command device control 1 device processing and multiplexing 2. During processing of the signal received at the frequency fkblock 2 automatically demodulates, decodes, stores the selected data portion of a received frame and issues a command to the control unit 1 that the buffer memory unit 2 is filled with another message. The control device 1 by performing pre-work algorithm, periodically monitors the presence of the output of block 2 teams on the accepted and processed the message. As soon as this command appears, the control unit 1 stops the execution of the main program and starts the subroutine read from a received frame necessary information (channel number assigned to the session, the number of the called subscriber, and so on). The process of reading information about the number of a frequency channel is to read the first 12 bits from the beginning of the frame. Procellaria, and the command in block 2, to allow the discharge of more unwanted messages. The resulting monitoring this frequency information is accumulated in the control device 1. After gathering information about the characteristics of the communication channels (baud rate, the length of the transmitted messages, and so on) and paired frequencies, the control device 1 generates the interfering sequence of bits, remembers her and proceeds to the stage of radiomodule.For emitted interference in the cycle of suppression of paired frequencies fiand fjin the control device 1 are formed control signals specifying the mode of operation of the transmitters 5 and 6. The signal that specifies the mode of operation of the transmitters includes: configuring transmitters on both selected to suppress frequencies (fifj); create signals that establish each of the transmitters of the type of modulation, the width of the spectrum of generated interference, the transmission speed of interfering messages and the duration of the cycle of the interference radiation. During radiomodule the control unit 1 through unit 2 takes the team about setting up transmitters 5 and 6 is selected to suppress the frequency outputs in block 2 of interfering bit sequence and Delicatessens communication channel is implemented using the receiver 4 through the submission to it of configuration commands to the required frequency.As devices that implement these steps can be used, for example, commercially available samples: IBM compatible personal computer of the control device; the receiving device is controlled via RS-232C, type IC-R8500 or AR-3000A; transmitting device is controlled via RS-232C, type ICom IC-F310/F320 IC-F410/F420; DSP type ADSP-2100 and specialized chips to it type AD607 - block processing and multiplexing [see the ADSP-2100 Family User's Manual Third Edition, September 1995. Analog Devices, Inc. Computer Products Division, Norwood, MA 02062-9106]. 1. How radiomodule communication channels, including the reception signal of the radiation source, the determination of its carrier frequency, modulation type and bandwidth, the control signal forming transfer mode and structure of the modulating voltage, the modulated carrier wave palehovym voltage gain modulated interfering signal and its radiation, characterized in that the signal of the radiation source take repeatedly at a frequency fkcommon channel signaling and in each round will determine the values of a pair of conjugate frequencies of reception fiand transfer of fjassigned to the session, remember what Ascot.2. The method according to p. 1, characterized in that to determine the pairs of paired frequencies receive fiand transfer of fjwrite the received message bit-allocate information part and read from it the number of the frequency channel assigned to the session, and then assign the number of the frequency channel corresponding value of the working frequency of the reception fiand the value of the transmission frequency fjcalculated by the formula
fj= fi= f,
where f is the frequency separation between the frequencies of transmission and reception.
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.
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