RU210172U1 - SUBSCRIBER SATELLITE STATION FOR OPERATION WITH MULTI-BEAM REPEATOR SATELLITES WITH HIGH CAPACITY - Google Patents

Abstract

The utility model relates to communication technology and can be used in transceivers of a satellite communication system. The technical result consists in increasing the noise immunity of the radio link under adverse conditions of radio signal propagation in systems with multi-beam repeater satellites. To do this, the subscriber station contains: an antenna that is connected to n radio frequency paths containing a low noise amplifier (LNA), a power amplifier, down and up converters, a modem tuned to a given reception frequency of the corresponding local area; a decision device that sums the antenna signals, a multiplexer that provides signal transmission, and a computing device configured to set the frequency for signal transmission by modems and control the output of the multiplexer for signal transmission to modems. 3 ill.

Description

FIELD OF TECHNOLOGY

The utility model relates to the field of satellite communications and is intended to improve the noise immunity of a radio link under adverse conditions of radio signal propagation in systems with multi-beam repeater satellites and multiple use of carrier frequencies.

BACKGROUND OF THE INVENTION

At present, satellites-relays of the HTS (high-throughput satellite) class with multi-beam antennas and frequency reuse are increasingly being used in satellite communications. Neighboring zones formed by different beams of one satellite have different frequencies for signal reception and transmission in relation to neighboring zones (Fig. 1). Any subscriber satellite station (ASS) can be at a point that is served by two or three beams at once. In addition, the ACC can be simultaneously in the local zones of beams from different satellite relays (Fig. 2). Such cases allow for diversity reception of the same signals in frequency and space. The downlink can be improved by combining several identical signals transmitted by the central earth station (CES) through the relay satellite, in different beams and, accordingly, on different carrier frequencies (Fig. 1).

From the existing level of technology, a portable satellite communication station is known (patent RU 2660800, 07/10/2018), which provides operation in multiple access networks with code and frequency code division of channels, provides expansion of functionality for organizing a communication network and has low weight and size indicators due to the combination a number of station equipment into separate structural modules. This station contains an antenna system, an antenna pointing system, a low-noise amplifier, a block of amplifiers-converters for receiving and transmitting frequencies, a modulator-demodulator block, a power amplifier and channel-forming equipment, a receive band pass filter, a band pass filter, a microwave unit, a block processing of broadband signals (BSS), an external interface unit, a station control panel, a headset, a communication line for receiving/transmitting signals via the S1-FL-BI interface, an Ethernet line, a communication line for receiving/transmitting signals via the RS-232 interface, and a connecting line (SL) from the exchange station, while the output of the antenna-feeder device is connected to the input of the band pass filter, the output of which is connected to the input of a low-noise amplifier, the output of which is connected to the first input of the microwave unit, the first output of which is connected to the input of the power amplifier, the output of which connected to the input of the band pass filter, the output of which is connected to the input of the antenna -feeder device, the second output of the microwave unit is connected to the first input of the block of amplifier-frequency converters (IFC) for receiving and transmitting, the first output of which is connected to the second input of the microwave unit, the third output of which is connected to the first input of the modulator-demodulator unit, the first output of which is connected with the third input of the microwave unit, the second output of the modulator-demodulator unit is connected to the second input of the IF receiving and transmitting unit, the second output of which is connected to the second input of the modulator-demodulator unit, the input of the channel-forming equipment is connected to the third output of the modulator-demodulator unit, the third input of which is connected with the output of the channel-forming equipment, the information input-output of which is connected to the information input-output of the external interface unit, the control input-output of which is connected to the control input-output of the channel-forming equipment, the control input-output of which is connected to the control input-output of the microwave unit, the first information input-output of which is connected not with the first information input-output of the broadband signal processing unit, the second information input-output of which is connected to the second information input-output of the external interface unit, the second control input-output of which is connected to the control input-output of the broadband signal processing unit, the control input-output of the station control panel is connected via the Ethernet interface to the third control input-output of the external interface unit, the third information input-output of which is connected to the information input-output of the headset headset, the second information input-output of the microwave unit is connected to the information input-output of the onboard beacon receiver that performs the role of the station antenna guidance system, the fourth, fifth, sixth and seventh information inputs-outputs of the external block of interfaces are connected to the inputs-outputs, respectively, of the communication line for receiving/transmitting signals at the S1-FL-BI interface, the Ethernet line, the communication line for receiving/transmitting signals via the RS-232 interface and connection line (SL) from the PBX station, while in order to reduce the weight and size of the station and improve its operational and technical characteristics, the antenna-feeder device, band-pass filters for receiving and transmitting, a low-noise amplifier and a power amplifier are functionally and structurally combined into an antenna module, and into a hardware the module functionally and structurally combines a microwave unit, a unit of amplifier-converters for receiving and transmitting, a modulator-demodulator unit, channel-forming equipment and a broadband signal processing unit.

A disadvantage of the known station is the impossibility of its operation in the mode of multipath signal processing through several satellites of repeaters with the summation of the signal received at different frequencies.

ESSENCE OF THE UTILITY MODEL

To solve the existing technical problem in improving communication when receiving signals from DSCs and repeater satellites in the case of operation through one repeater satellite (CP), one antenna and several (up to three) modems and one decision device, for example, a processor or a microcontroller, will be required, which according to a given algorithm, sums the signals received at different frequencies.

The technical result coincides with the solution of the technical problem and consists in improving communication when receiving signals from the CZS, due to multipath signal processing through several repeater satellites with the summation of the signal received at different frequencies.

The technical result is achieved using the claimed architecture of the subscriber station for receiving and relaying satellite signals, which contains:

an antenna for communication with the repeater satellite, which is connected to n radio frequency paths, each of which contains a low-noise amplifier (LNA), a power amplifier, down and up converters, through the corresponding inputs / outputs of which the radio frequency path is connected to the modem, while each modem is made tuned to a given reception frequency of the corresponding local area;

a decision device connected to the modems and configured to sum the antenna signals received at different frequencies;

multiplexer connected to modems and providing signal transmission;

a computing device connected to the modems and the multiplexer, and configured to set the frequency for signal transmission by the modems and control the output of the multiplexer for signal transmission to the modems.

BRIEF DESCRIPTION OF THE DRAWINGS

On FIG. 1 - Fig. 2 shows examples of well-known solutions for receiving signals by a station from several satellites.

On FIG. 3 shows the view of the declared subscriber station.

IMPLEMENTATION OF UTILITY MODEL

As shown in FIG. 3, the claimed subscriber station (10) for receiving and relaying satellite signals includes an antenna (100) for communicating with the relay satellite, which is connected to n radio frequency paths, in particular three paths in the presented implementation. Each path contains LNA (101, 103, 105), which are connected by their inputs to the antenna (100), a power amplifier (102, 104, 106) connected to the antenna (100) by outputs, a step-down (107, 109, 111) and a step-up converters (108, 110, 112).

Down converters (107, 109, 111) are connected to the outputs of the LNA (101, 103, 105), boost converters (108, 110, 112) are connected to the inputs of power amplifiers (102, 104, 106). Each radio frequency path through the specified inputs/outputs of up and down converters is connected to the first input/output of modems (113, 114, 115), each of which is tuned to a given reception frequency of the corresponding local area.

The decision device (116), made on the basis of a processor or a microcontroller, receives data from the modems (113, 114, 115) at different frequencies from the antenna (100) on the first, second and third inputs and sums them up. The output of the decision device (116) is connected to the input of the computing device (118) and the multiplexer (117). The multiplexer (117) provides signal transmission, while the multiplexer (117) through the first, second and third outputs is connected to the second inputs of the modems (113, 114, 115). The computing device (118) is based on a processor or microcontroller, while the first output of the device (118) is connected to modems (113, 114, 115) to ensure that the frequency is set for signal transmission by modems (113, 114, 115), and the second output is connected with a multiplexer (117) to control the output of the multiplexer (117) for transmitting signals to modems (113, 114, 115).

To work through several relay satellites, it is necessary to use n antennas and n modems and one resolver.

The uplink can be improved by choosing the optimal transmit frequency and optimal direction to the CP, i.e. select one of the antennas. The optimal operating frequency for transmission and antenna at the current time is determined by the decision device based on the determination of the best signal for reception.

Claims (1)

A subscriber station for receiving and retransmitting satellite signals, comprising: an antenna for communication with the satellite relay, which is connected to n radio frequency paths, each of which contains a low-noise amplifier (LNA), a power amplifier, down-converter and boost-converter, through the corresponding inputs/outputs of which the radio frequency path is connected to the modem, with each modem tuned to a predetermined receiving frequency of the corresponding local area; a decision device connected to the modems and configured to sum the antenna signals received at different frequencies; multiplexer connected to modems and providing signal transmission; a computing device connected to the modems and the multiplexer, and configured to set the frequency for signal transmission by the modems and control the output of the multiplexer for signal transmission to the modems.

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