Method for coordinated processing of signals transmitted by beacons

FIELD: communication.

SUBSTANCE: invention relates to communication equipment and can be used demodulating a signal carrying a message transmitted by a terrestrial beacon. To this end, system comprises a constellation of satellites suitable for detecting said signal and for repeating it towards a plurality of receiving stations on the ground, and an analysis module suitable for receiving signals from said stations, each receiving station transmitting signals that it receives from a satellite to analysis module, said analysis module realigning said signals in frequency and/or in time relative to one another, combining realigned signals to generate a synthetic signal having an enhanced signal-to-noise ratio, and determining content of said message and/or modulation parameters of said synthetic signal.

EFFECT: technical result consists in improvement of accuracy of locating emergency radio beacons with a satellite system.

12 cl, 2 dwg

 



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: communication system with high rate of information transfer with ultrabandwidth signals includes a reception/transmission switch, a band-pass filter, an antenna, a processing and control unit, buffer devices, an ultrabandwidth pulse generator, a low-noise amplifier, an attenuator, a power divider, two time window devices, two threshold voltage shapers, two inverters with discharge, two comparison circuits and a synchronisation unit.

EFFECT: increasing interference immunity of information transfer under high-intensity noise conditions.

1 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to radio communication and can be used in constructing high-speed two-way radio links operating at one frequency when transmitting discrete or analogue signals. A system for two-way high-speed short-wave radio communication consists of two transceiving sets, each comprising an analogue signal source, an analogue signal receiver, a signal compressor, a signal expander, a control unit, a modulator, a transmitter, a transceiving antenna, a first input signal switch, a demodulator, a clock signal demodulator, a receiver, wherein each transceiving set further includes an encoder, a decoder, a discrete signal source, a discrete signal receiver, a first radio signal switch, an output signal switch, a digital selective call (DSC) signal generator and a second input signal switch.

EFFECT: high link throughput and more radio subscribers that can operate at the same operating frequency.

8 cl, 2 dwg

FIELD: physics, communications.

SUBSTANCE: invention relates to communication. In the method, when performing transmission power planning for a broadcast control channel (BCCH) carrier, it is determined whether a traffic channel is in an idle state, it is determined whether the traffic channel is in a discontinuous transmission DTX silent period, when the traffic channel is in a non-idle state; and transmission power of channels configured on the BCCH carrier in some of time slots is reduced when the traffic channel is in the idle state or when the traffic channel is in the non-idle state and is in the DTX silent period. With the present invention, since the transmission power can be reduced according to demand of the planned part of time slots, the power consumption on the BCCH carrier can be optimised or its influence on the power consumption of the base station can be minimised while maintaining operating performance of the whole network.

EFFECT: base station power saving method and system are disclosed.

6 cl, 1 tbl, 6 dwg

FIELD: radio engineering, communication.

SUBSTANCE: in the cross-repeater the interaction of radio networks of a single-frequency and two-frequency simplex operating in two different frequency ranges, and a conference communication radio network is implemented. The cross-repeater contains two pairs of simplex radio stations connected to the power unit and to each other through an interface which in each pair through the duplex filter are connected to common antenna and operated at unmatched frequencies of conditional range. Interface has multiport adders - two per radio station, the low-frequency output of the receiver of each of which is connected to the noise suppressor and through the respective adders with the input of submodulator of transmitter of the radio stations operating in one of frequency ranges, and the output of the noise suppressor of each of radio stations through the respective adders is connected to the control transmitter of radio stations operating in another frequency range. Pairs of simplex radio stations can operate in the ranges respectively 160 MHz and 460 MHz.

EFFECT: expansion of scope of application of repeaters for organising of interaction of several radio networks operating in different frequency ranges.

2 cl, 3 dwg

FIELD: physics.

SUBSTANCE: instead of the prototype-valid estimation an information-bearing cyclic time shift of an m-sequence in each beam separately and averaging of results of said estimation across all beams, the present invention includes coherent accumulation (each separately) of an information pulse arriving on all beams, and generating the desired estimate of the time shift of the m-sequence based on the single-beam information pulse generated as a result of said coherent accumulation.

EFFECT: low decoding error probability.

3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to reception of broadband signals under the action of concentrated interference in a reception band. The device includes n band-pass filters of a first group (11-1n), a unit for calculating weight coefficients (2), n multipliers of a first group (31-3n), two adders (4, 14), a matched broadband signal filter (5), a rank vector computer (6), two spectral rearrangement units of a first type (7, 12), n reference voltage sources (81-8n), n multipliers of a second group (91-9n), two spectral rearrangement units of a second type (10, 13), n band-pass filters of a second group (111-11n).

EFFECT: minimising distortion of the correlation function of a received signal after the signal passes through an adaptive filter while maintaining the matched filtering principle.

9 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to receiving-transmitting devices and can be used in command radio links to transmit command information from a base station to on-board (and in the reverse direction). In a command radio link digital modem during transmission, a signal from the output of a modulator is subjected to spectrum spreading with multiplication using a first multiplier of a low-speed information signal coming from the output of the modulator, with a pseudo-random sequence of bipolar pulses, which is transmitted from a pseudo-random sequence generator. During reception, samples of the complex envelope of the received signal from ADC modules with frequency arrive at a digital down-converter (DDC), which provides filtration in the working frequency band and multiplies the signal with reference oscillation from a digital synthesizer (DDS) in order to compensate for Doppler shift. Further, the signal arrives at a device for searching for a noise-type signal based on delay and frequency, which enables detection of a noise-type signal. Once a noise-type signal is detected, the device for searching for a noise-type signal based on delay and frequency re-launches the means of tracking delay of the noise-type signal to provide initial synchronisation of the reference pseudo-random sequence with the pseudo-random sequence of the received noise-type signal. The system for tracking delay clocks the pseudo-random sequence generator to maintain clock synchronisation of the reference pseudo-random sequence and the pseudo-random sequence of the received noise-type signal (tracking the noise-type signal on delay). The reference pseudo-random sequence is multiplied by the multiplier with the complex envelope of the received noise-type signal and transmitted to a coherent demodulator. The coherent demodulator provides elimination of residual offset on frequency and phase of the received signal and the local reference oscillation generator, signal accumulation over the duration of the noise-type signal and a relaxed solution on the transmitted bit. The relaxed solutions are further transmitted to a noise-immune code decoder. The decoded data are transmitted through a switch to the output of the digital modem. If the encoding mode is turned off, the data from the output of the modulator are immediately transmitted to the output of the digital modem.

EFFECT: maintaining working capacity and main characteristics in the presence of Doppler frequency shift of a signal in channels and frequency instability of reference generators.

7 dwg, 2 tbl

FIELD: radio engineering, communication.

SUBSTANCE: proposed procedure consists in execution of terminal assigned programme at the server data processing module, compression and encoding of said data to be output to terminal appropriate device. Server transceiver module sends said data to said terminal. Said terminal receives said data, decompress it, decodes and displays at terminal output device. Extra data, if any, received from terminal input device, said terminal compresses it, encodes and forwards to said server by terminal transceiver module. Note here that said server uses its transceiver module to receive, decompress and decode said data and loads it into software.

EFFECT: enhanced performances of the terminal.

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to communication engineering and can be used to provide the management of a ship with real-time tactical communication and interaction communication. The integrated communication system for a surface ship integrates communication subsystems. The system is designed to provide the management of a ship with real-time tactical communication and interaction communication through automated generation and provision of different channels and radio communication paths.

EFFECT: high quality of communication channels and reception of information, reliability and robustness of the system.

1 tbl, 1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: digital radio communication on railway transport comprises a radio receiver and hardware-software of the automated workstation of the radio communication electrical officer, connected to a digital IP network, and, mounted on each locomotive, a locomotive radio station with a receiving-transmitting device and a talk-back panel; the radio station of each locomotive and portable radio stations are configured to operate according to the DMR standard. The IP network is connected to repeaters mounted at each station and talk-back panels of process managers at each locomotive are provided with safety devices. Each locomotive radio station further includes a unit for input/output of information of first and second timeslots, a talk-back panel of the locomotive driver, a safety device, a unit for generating diagnostic data of the state of the locomotive, a receiving-transmitting device, a repeater with a radio receiver which enables to separate information according to areas of responsibility of process managers at the station, talk-back panels of which are made with a terminal in the form of an all-in-one machine with a Touch-Screen function and capable of switching screen forms.

EFFECT: high quality of voice communication and broader functional capabilities of the system.

5 cl, 1 dwg

Personal computer // 2247470

FIELD: computer equipment hardware for global computer network.

SUBSTANCE: novelty is that proposed personal computer incorporates provision for wireless access to input of service provider computer due to newly introduced transceiver device incorporating sine-wave oscillator, frequency synthesizer, transmission channel incorporating switch, carrier amplifier, single-pole signal shaper, output amplifier, antenna, pulse shaper, second switch and data request signal circuit, as well as receiving channel incorporating receiving unit, radio-frequency amplifier, double-pole amplitude detector, inverter, delay circuit, pulse shaper, register, and two decoders. Data signal transmission and reception speed is 26 Mbit/s.

EFFECT: enhanced data exchange speed.

1 cl, 5 dwg

FIELD: electronic engineering.

SUBSTANCE: method involves applying two-channel transmitter having unit for building masking signals, the third adder unit, the third multiplier, the fourth adder unit, pseudo-random sequence generator and low frequency filter. Receiver unit has the third multiplier, synchronization unit, pseudo-random sequence generator with decoder connected to it, the first and the second delay units, controlled clock pulse oscillator, key unit and the second adder unit. Pilot signal is formed as complex signal built from four sinusoid oscillations. Each pair of the oscillations is phase-manipulated with its pseudo-random sequence.

EFFECT: data transmission protection against reconnaissance.

14 dwg

FIELD: communications engineering; broadband systems using serial multifrequency signals.

SUBSTANCE: proposed communication system that can be used for receiving and transmitting digital information functions to transfer message by items of serial multifrequency signals and not by these signals proper; result of reception of message as a whole is not lost from cycle to cycle, rather it is stored so that message decoding conditions are improved with each next cycle. Moreover, counters, switches, AND and OR gates, coders, decoders, comparison unit, threshold signal shaper, flip-flop, delay units, buffer units, distributors, integrators, and majority storages used on receiving and transmitting ends also enable reception and transmission of formalized message in variable delivery time.

EFFECT: reduced message delivery time to point characterized in favorable reception conditions.

1 cl, 5 dwg

FIELD: wireless local communication networks.

SUBSTANCE: the method is characterized by the fact that with the help of a transceiver with a controlled radiation pattern an exchange of information with some transceiver of the network is accomplished, in the process of this exchange the current value of communication quality is determined, compared with the minimum or maximum threshold value of communication quality, the process of optimization of the antenna beam is effected by the result of comparison, it is repeated whenever necessary.

EFFECT: enhanced quality of connection.

22 cl, 9 dwg

FIELD: information and telecommunication engineering, applicable for determination of object location.

SUBSTANCE: the united universal control system has an integrating control center with a central server, party dispatching system and party control centers, the interconnected by communication means integrating control center has an additional cartographic server and a router, the cartographic server and the central server are connected to the router, which, in its turn is connected to the dispatching system and party control centers via communication means, for example, via wire ones via modems. Each party control center has a server connected via a modem to the communication line. The party control systems have: a party navigation system, party remote measurement system, party telecontrol system and a monitoring system of object travel.

EFFECT: expanded functional potentialities of the system.

5 dwg

FIELD: digital data transfer over radio lines; radiotelemetry and computer data exchange systems.

SUBSTANCE: opposite-polarity pulse signals are shaped on receiving end of device upon conversion of input signal levels, converted signals being close to ball-shaped ones; positive-polarity signals are fixed to rise time of input signal and negative-polarity ones, to its fall time. Ball-shaped opposing-polarity signals arrive at frequency modulator affording appropriate deviation of radiated signal. Ball shape of signals provides for minimizing signal spectrum width at permitted spectrum width of radiated signals. On sending end of device levels of opposing-polarity signals received are compared and output signals are generated which enables data transfer at any speed permitted by State Standard.

EFFECT: enlarged speed range for data transfer.

1 cl, 3 dwg

FIELD: radio engineering; multidirectional radio communication systems for known directions to distant stations.

SUBSTANCE: proposed multidirectional communications device has M antennas, where M > 3, set of transceiver modules, M receiving-channel power splitter units, M directivity pattern shaping modules, N demodulators, where 2 < N < M, N reception quality estimating units, directivity-pattern shaping control unit, and unit for controlling junction and terminal stations; novelty is introduction of N high-frequency signal units, N optimal addition units, N demodulators, and relevant connections which has enabled organization of optimal addition circuit that generates signal for each direction of communications, signal amplitude being proportional to square of amplitude of signal copy having highest signal-to-noise ratio.

EFFECT: enhanced reliability of multidirectional communications in radio noise environment.

1 cl, 4 dwg

Radio station // 2257029

FIELD: radio engineering.

SUBSTANCE: device has the second transmitter, the third receiver, the second unit for forming guard frequencies, the second interface unit, three multiplexers, eight switchboards, the second frequency reorganization unit, the unit for selecting operation modes, the second reception analyzer, the second coder, the second synchronizer and the second terminal unit additionally introduced into radio station design.

EFFECT: enhanced effectiveness in organizing communication with two correspondents, concurrently expecting calls on guard frequencies.

1 dwg

FIELD: mobile communications.

SUBSTANCE: method and device for transmitting and receiving between mobile station and base station of information of orthogonal code index, pointing out orthogonal codes, available for mobile station n mobile communication system, supporting multimedia services, which include voice and data transfer services. Mobile stations are connected to base stations and concurrently receive services of data transfer from base station. Base station generates information of orthogonal code index accordingly to states of direct mobile station channel, and sends this to mobile station. Each mobile station determines orthogonal codes assigned thereto from received information of orthogonal code index.

EFFECT: higher efficiency, broader functional capabilities.

14 cl, 8 dwg

FIELD: wireless communications.

SUBSTANCE: base station performs transfer from access terminal via direct graph channel only in case, when it has data for sending to this access terminal. Base station minimizes worst period, necessary for restoration of graph channel resource after disconnection, by periodical transfer of configuration packet to its access terminals. Configuration packet notes state of graph channels distribution, belonging to current base station. If access terminal receives configuration packet, noting disconnection of one or all its graph channels, it immediately stops use of these graph channels. If access terminal fails to successfully decode configuration packet during given control time, then it disconnects its connection to all base stations and graph channels connected thereto.

EFFECT: higher efficiency, broader functional capabilities.

6 cl, 10 dwg

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