CN216625735U - Satellite-borne mixed multi-beam forming system - Google Patents

Abstract

The utility model provides a satellite-borne mixed multi-beam forming system which comprises an intermediate frequency signal processing module in communication connection with a radio frequency front end/channel simulator, wherein the intermediate frequency signal processing module is connected with a beam forming and baseband processing module, and the beam forming and baseband processing module is connected with a protocol and network processing module. The beam forming and baseband processing module is an SCA platform which comprises 4 pieces of FPGA with symmetrical structures, and each piece of FPGA is mutually connected at a high speed and is operated in a cooperative mode. The satellite-borne hybrid multi-beam forming system provided by the utility model can be widely applied to simulation and verification scenes of inter-satellite switching, networking routing, mobility management, air interface system and beam switching of a low-orbit satellite communication system.

Description

Satellite-borne mixed multi-beam forming system

Technical Field

The utility model relates to the technical field of low-earth orbit satellite multi-beam forming, in particular to a satellite-borne mixed multi-beam forming system.

Background

The global low-earth-orbit satellite communication and the space internet system are the focus field of the current space competition, and the fusion of the low-earth-orbit satellite internet system and the ground 5G is the direction for constructing a novel space infrastructure of the world global integrated. Meanwhile, due to the fact that the low frequency band is gradually saturated, the high frequency corresponds to the high speed, the small beam is more beneficial to improving the system power and frequency multiplexing, and the like, the frequency used in the current low-earth satellite communication field gradually develops towards the KA and Q/V high frequency band. Compared with low-frequency signals, high-frequency millimeter wave signals are large in loss in the transmission process, too high path loss needs to be compensated through directional gain generated by beam forming, and the beam forming is a key link for realizing millimeter wave communication. In the beam forming method, the problems of high power consumption and cost requirements of digital beam forming and incapability of multi-user transmission of analog beam forming exist, and hybrid beam forming is a compromise between the two methods and gives consideration to the advantages of the two methods. Due to the characteristics of a communication system of a low-earth orbit satellite system and the rapid iterative optimization of a key technology, a hybrid multi-beam forming platform which is reconfigurable, expandable, modularized, multi-band and high-throughput in simulation verification and supports various radio frequency front ends is very important.

SUMMERY OF THE UTILITY MODEL

To overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a satellite-borne hybrid multi-beam forming system.

In order to achieve the above object, the present invention provides a satellite-borne hybrid multi-beam forming system, which includes an intermediate frequency signal processing module communicatively connected to a radio frequency front end/channel simulator, the intermediate frequency signal processing module being connected to a beam forming and baseband processing module, the beam forming and baseband processing module being connected to a protocol and network processing module.

The protocol and network processing module realizes the monitoring of each part of the system, the processing of a complex protocol layer and the network communication with a feed link and an inter-satellite link. The satellite-borne hybrid multi-beam forming system performs beam forming on analog signals of a satellite-borne radio frequency front end in the uplink direction, solves IP data packets and sends the IP data packets to a feed link and an inter-satellite link, and unpacks the IP data packets of the feed link and the inter-satellite link in the downlink direction, sends the IP data packets to the radio frequency front end through beam forming, and performs technical verification on a low-orbit satellite constellation system.

According to the preferable scheme of the satellite-borne hybrid multi-beam forming system, the beam forming and baseband processing module is an SCA platform, the SCA platform comprises N pieces of FPGA with symmetrical structures, each piece of FPGA is mutually connected at a high speed and is operated in a cooperative mode, and N is a positive integer.

According to the preferable scheme of the satellite-borne hybrid multi-beam forming system, the SCA platform comprises 4 FPGA with symmetrical structures, A, B, C, D four boards are respectively, wherein the board A is a beam forming module and is used for forming uplink and downlink beams, the board B and the board D are baseband signal processing modules and are used for processing baseband signals, and the board C is a data interaction and test module and is used for carrying out data interaction and function test on a beam data collection same protocol and a network processing module.

According to the preferable scheme of the satellite-borne hybrid multi-beam forming system, the beam forming module comprises an uplink beam forming module, a downlink beam forming module, a sampling testing module I, a control monitoring module I, a packaging and unpacking module I and a packaging and unpacking module II;

the intermediate frequency signal processing module is connected with the first package unpacking module in a communication mode, the first package unpacking module is connected with the first uplink and downlink beam forming module in a communication mode, the uplink and downlink beam forming module is connected with the first package unpacking module in a communication mode, the first control monitoring module is connected with the first package unpacking module, the second package unpacking module and the uplink and downlink beam forming module in a communication mode, real-time data of the first package unpacking module and the first control monitoring module in the operation process of the first sampling testing module collecting system are tested, the first output end of the sampling testing module is connected with the second package unpacking module, and the second package unpacking module is connected with the baseband signal processing module in a communication mode.

According to the preferable scheme of the satellite-borne hybrid multi-beam forming system, the baseband signal processing module comprises a baseband processing module, a sampling test module II, a control monitoring module II, a group packaging and unpacking module III and a group packaging and unpacking module IV;

the beam forming module is in three-way communication connection with the group unpacking module, the group unpacking module III is in communication connection with the baseband processing module, the baseband processing module is in four-way communication connection with the group unpacking module, the control monitoring module II is in three-way communication connection with the group unpacking module, the group unpacking module IV is in four-way communication connection with the baseband processing module, the real-time data of the group unpacking module III and the control monitoring module II are tested in the running process of the two sampling and testing module acquisition system, the output end of the sampling and testing module II is connected with the group unpacking module IV, and the group unpacking module IV is in four-way communication connection with the protocol and the network processing module.

The first control monitoring module and the second control monitoring module complete the monitoring control of the running state of each module on the SCA platform and the state of a data interaction link between devices; the first and second sampling test modules are responsible for real-time data acquisition in the system operation process for test and debugging.

According to the preferred scheme of the satellite-borne hybrid multi-beam forming system, the intermediate frequency signal processing module comprises N software radio platforms, the software radio platforms are connected with the SCA platform through SFP + photoelectric modules and packaged through an AURORA protocol, the A board is connected with N/2 software radio platforms and used for receiving and transmitting baseband data of N pairs of antennas, and at the uplink time, the software radio platforms upload two paths of baseband IQ data, frequency domain data and state information to the SCA platform; and at the downlink moment, the software radio platform receives downlink beam forming processing data and control information sent by the SCA board.

According to the preferable scheme of the satellite-borne hybrid multi-beam forming system, the software radio platform comprises a digital up-conversion module which is used for performing interpolation, filtering and spectrum linear movement on baseband signals, converting the baseband signals into intermediate-frequency signals and transmitting the intermediate-frequency signals to the wireless interface module; the digital down-conversion module is used for extracting and filtering the intermediate frequency signal, linearly moving the frequency spectrum, converting the intermediate frequency signal into a baseband signal and transmitting the baseband signal to the beam forming and baseband processing module.

According to the preferable scheme of the satellite-borne mixed multi-beam forming system, the digital up-conversion comprises a two-stage half-band HB filter, a one-stage CIC filter and a mixer, the half-band HB filter and the CIC filter realize n-fold interpolation of signals without aliasing, and the mixer moves a baseband signal frequency spectrum to an intermediate frequency spectrum;

the digital down-conversion comprises a mixer, a first-stage CIC filter and a two-stage half-band HB filter, the half-band HB filter and the CIC filter realize n times of extraction of signals without aliasing, and the mixer moves the frequency spectrum of an intermediate frequency signal to a baseband.

The satellite-borne hybrid multi-beam forming system provided by the utility model can be widely applied to simulation and verification scenes of inter-satellite switching, networking routing, mobility management, an air interface system and beam switching of a low-orbit satellite communication system, is an important component for performing simulation verification of a low-orbit satellite system communication system and various key technologies, can quickly adapt to simulation iteration requirements along with the deepening of simulation, and has the characteristics of applicability, stability, flexibility and the like.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a block diagram of the hardware components of a satellite-borne hybrid multi-beam forming system;

FIG. 2 is a digital logic block diagram of an SCA platform;

FIG. 3 is a digital logic block diagram of a software radio platform that is an intermediate frequency signal processing module;

FIG. 4 is a flow chart for processing uplink signals;

fig. 5 is a flow chart of signal processing for the downlink direction.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

As shown in fig. 1, the utility model provides an SCA-based satellite-borne hybrid multi-beam forming system for low-earth orbit satellite key technology simulation verification, which performs beam forming and signal processing, and includes an intermediate frequency signal processing module in communication connection with a radio frequency front end/channel simulator, the intermediate frequency signal processing module is connected with a beam forming and baseband processing module, and the beam forming and baseband processing module is connected with a protocol and a network processing module. The protocol and network processing module can be composed of a high-performance X86 dual-CPU server, and realizes monitoring of each part of the system, complex protocol layer processing and network communication with a feeder link and an inter-satellite link.

In the uplink direction, an intermediate frequency signal processing part is used for carrying out A/D conversion and down-conversion on an intermediate frequency signal of a radio frequency front end/channel simulator to obtain a baseband IQ digital signal; converting the baseband IQ signals to a beam domain by using a weight coefficient; implementing synchronization, channel estimation, decoding and demodulation of each channel of the physical layer and baseband signal processing; and performing upper layer protocol processing such as an MAC layer, an RLC layer, a PDCP layer and the like, and recovering the IP data packet.

In the downlink direction, carrying out PDCP/RLC/MAC layer protocol processing and RRC layer resource allocation on the IP data packet of the power feeding/inter-satellite link; implementing baseband sending signal processing of a physical layer downlink broadcast channel, a control channel and a shared channel; converting the beam domain signals to baseband IQ signals of each channel by using weight coefficients; and performing digital up-conversion and D/A conversion on the baseband IQ signal, and outputting the baseband IQ signal to a radio frequency front end or a channel simulator.

The intermediate frequency signal processing module consists of a software radio platform and realizes communication with a radio frequency front end/channel simulator, A/D, D/A conversion, digital up-down frequency conversion and communication with a beam forming part; the main parameter requirements are as follows: the direct current voltage input is 12V, the power consumption is 45W, the ADC sampling rate (maximum) is 200MS/s, the ADC resolution is 14bits, the DAC sampling rate is 800MS/s, the DAC resolution is 16bits, the host maximum rate (16b) is 200MS/s, the local oscillation precision is 2.5ppm, and the unlocked GPSDO precision is 20 ppb.

The beam forming and baseband processing module realizes the baseband processing and radio frequency beam forming work with high real-time requirements, receives digital baseband signals from a software radio platform of a middle frequency part, performs beam forming and baseband processing and sends data to the protocol and network processing module for high-level protocol analysis, and vice versa. The beam forming and baseband processing module is an SCA platform which comprises N pieces of FPGA with symmetrical structures, each piece of FPGA is mutually connected at a high speed and operated in a cooperative mode, and the FPGA is connected with DDR3, RTM, FMC, GPIO and clock IO to realize the expansion functions of large-scale storage, simulation and number, and N is a positive integer. Meanwhile, an embedded processor module is arranged on the board and is responsible for controlling the SCA and communicating with an upper computer. The main interface requirements include: the RJ-45 type 1GB ETH realizes the control of an upper computer to equipment and data transmission based on a TCP/IP protocol, an AIO interface expands a high-speed AD/DA and a high-speed digital IO, an SMA type JC OUT interface outputs a clock signal passing through a JC PLL, an SMA type CLK IN/OUT interface outputs/inputs an FGPA internal clock signal, a GPIO interface outputs/inputs a low-speed GPIO signal inside an FPGA, and an SMA type SYNC interface single-bit synchronous signal is connected with a backboard synchronous signal.

In this embodiment, the SCA platform includes 4 FPGAs with symmetric structures as an example, where the 4 FPGAs with symmetric structures are A, B, C, D four boards respectively, where a board is a beam synthesis module to synthesize uplink and downlink beams, a board B and a board D are baseband signal processing modules to process baseband signals, and a board C is a data interaction and test module to perform data interaction and function test on a beam data collection common protocol and network processing module.

The intermediate frequency signal processing module is provided with N software radio platforms, N is a positive integer and is preferably an even number, the software radio platforms are connected with the FMC board card of the SCA platform through the SFP + photoelectric module by cables and packaged by an AURORA protocol, and bidirectional high-speed data transmission with the speed of 10Gbps is supported at most. And the A board of the SCA platform is connected with the N/2 software radio platforms to complete the receiving and sending of the baseband data of the N pairs of antennas. At the uplink moment, the software radio platform of the intermediate frequency part uploads two paths of baseband IQ data, (frequency domain data) and state information to the high-performance SCA platform; and at the downlink moment, the software radio platform of the intermediate frequency part receives downlink beam forming processing data and control information sent by the SCA platform.

The digital logic part of the software radio platform of the intermediate frequency signal processing module mainly completes the intermediate frequency signal processing and the error-free transmission of data between the software radio platform and the SCA platform, the digital logic is shown in figure 3, and the main module specifically comprises: the digital up-conversion module and the digital down-conversion module also comprise a clock management module, a reset management module, a wireless interface module, a control monitoring module III, a sampling test module III and the like.

The digital up-conversion module is in communication connection with the beam forming and baseband processing module, and is used for performing interpolation, filtering and linear movement of frequency spectrum on baseband signals sent by the beam forming and baseband processing module, converting the baseband signals into intermediate-frequency signals and transmitting the intermediate-frequency signals to the wireless interface module, wherein the interpolation rate and the intermediate-frequency of the signals can be flexibly configured through software; the digital up-conversion is realized by two stages of half-band HB filters, one stage of CIC filters and a MIXER MIXER, the half-band HB filters and the CIC filters realize n-fold interpolation of signals without aliasing, and the MIXER realizes the frequency spectrum shifting of baseband signals to an intermediate frequency spectrum through cordic.

The digital down-conversion module acquires an intermediate frequency signal of the radio frequency front end/channel simulator through the wireless interface module, so that extraction, filtering and linear movement of frequency spectrum of the intermediate frequency signal are realized, the intermediate frequency signal is converted into a baseband signal and transmitted to the beam forming and baseband processing module, and the extraction rate of the signal and the intermediate frequency can be flexibly configured through software; digital down conversion is composed of MIXER MIXER, one-stage CIC filter and two-stage half-band

The (HB) filter is realized, the half-band filter and the CIC filter realize n-time extraction of signals without aliasing, and the mixer realizes the frequency spectrum shifting of the intermediate frequency signals to a baseband through cordic.

The control monitoring module III is connected with the digital down-conversion module, the wireless interface module and the packet unpacking module V, so that the real-time monitoring of the internal working state of the software radio platform is realized, and the software radio platform is sent to a server through the packet packing at any time so as to judge normal work or make corresponding abnormal treatment.

The sampling test module III is connected with the digital down-conversion module, the wireless interface module and the packet unpacking module V, so that the real-time collection of the internal important data is realized, and a flexible and convenient means is provided for testing the data.

And the fifth packing and unpacking module completes the packing of the data received by the intermediate frequency part software radio platform and the unpacking of the data of the SCA platform, and simultaneously carries out packet error and packet leakage monitoring. The AURORA communication module is responsible for data communication between the intermediate frequency part software radio platform and the SCA platform.

The clock management adopts a flexible clock processing structure, and the required processing clock can be configured for each module according to the user requirement; the reset management is used for processing abnormal conditions in time and providing manual reset, software reset and automatic reset according to the abnormal types; the wireless interface module completes seamless connection with a peripheral hardware circuit of the platform, flexibly configures hardware according to different working modes, and simultaneously completes control of sending and receiving data streams of intermediate frequency signals.

The digital logic part of the SCA platform mainly completes real-time beam forming of uplink and downlink and physical layer baseband signal processing, as shown in fig. 2, wherein a board completes the beam forming function of N antenna signals, a board B and a board D respectively complete the physical layer baseband signal processing of 0- (N-1)/2 beams and N/2-N-1 beams, a board C completes the data interaction and related test functions of the N-beam data collection and protocol and network processing module, and the main modules are as follows:

the beam forming module comprises an uplink and downlink beam forming module, a sampling test module I, a control monitoring module I, a packaging and unpacking module I and a packaging and unpacking module II.

The intermediate frequency signal processing module is connected with the first package unpacking module in a communication mode, the first package unpacking module is connected with the first uplink and downlink beam forming module in a communication mode, the uplink and downlink beam forming module is connected with the first package unpacking module in a communication mode, the first control monitoring module is connected with the first package unpacking module, the second package unpacking module and the uplink and downlink beam forming module in a communication mode, real-time data of the first package unpacking module and the first control monitoring module in the operation process of the first sampling testing module collecting system are tested, the first output end of the sampling testing module is connected with the second package unpacking module, and the second package unpacking module is connected with the baseband signal processing module in a communication mode.

The control monitoring module I is responsible for collecting state information of each module of the SCA platform digital logic, forwarding state data packets reported by a software radio platform of the intermediate frequency signal processing module, receiving data packets sent by a protocol and a network processing module side and analyzing the control information. The state information comprises packet loss, packet error, overtime, parity check failure times, link current state, maximum offset between channel data streams and the like of each link of the software radio platform of different intermediate frequency signal processing modules; each module control information comprises the selection of the wave beam coefficient of the uplink and downlink wave beam synthesizer; the method comprises the steps of multi-channel data synchronization maximum time limit exceeding, scaling factors of an uplink and downlink wave beam synthesizer, reset control of the uplink and downlink wave beam synthesizer and an interface link, and data acquisition selection control.

The baseband signal processing module comprises a baseband processing module, a sampling test module II, a control monitoring module II, a group packaging and unpacking module III and a group packaging and unpacking module IV;

the beam forming module is in three-way communication connection with the group unpacking module, the group unpacking module III is in communication connection with the baseband processing module, the baseband processing module is in four-way communication connection with the group unpacking module, the control monitoring module II is in three-way communication connection with the group unpacking module, the group unpacking module IV is in four-way communication connection with the baseband processing module, the real-time data of the group unpacking module III and the control monitoring module II are tested in the running process of the two sampling and testing module acquisition system, the output end of the sampling and testing module II is connected with the group unpacking module IV, and the group unpacking module IV is in communication connection with the protocol and the network processing module.

The sampling test module I and the sampling test module II realize real-time collection of internal important data and provide a flexible and convenient means for testing data; the first, second, third and fourth packing and unpacking modules complete the packing of the data received by the software radio platform of the intermediate frequency signal processing module and the unpacking of the data of the SCA platform, and simultaneously carry out the monitoring of packet error and packet leakage; the AURORA communication module is responsible for data communication between the software radio platform and the SCA platform of the intermediate frequency signal processing module.

As shown in fig. 4 and 5, in the uplink direction, the software radio platform of the if signal processing module is connected to the rf front end/channel simulator, performs a/D conversion on each input if analog signal to obtain a digital if signal, the high-performance software radio platform SCA beam forming part converts signals to a beam domain by utilizing a full-value coefficient obtained by pre-storing or real-time calculating, sends the beam domain baseband signals to a baseband processing part to implement synchronization, channel estimation, channel decoding and demodulation algorithms, recovers corresponding control or data plane information, sends the control or data plane information to a protocol and network processing module, performs protocol processing of upper-layer protocols such as an MAC layer, an RLC layer, a PDCP layer and the like, recovers an IP data packet, and sends the IP data packet to a corresponding feeder link or an inter-satellite link through routing selection; in the downlink direction, the protocol and network processing module receives IP data packets from the power supply link and the inter-satellite link, performs protocol processing of the PDCP/RLC/MAC layer, and determining the beam sequence number through RRC layer resource allocation, sending corresponding control or data information to SCA baseband processing part, performing transmission signal processing of downlink broadcast channel, downlink control channel and downlink shared channel of each downlink channel of physical layer to obtain beam domain baseband IQ transmission signal, in the SCA beam forming portion utilizing given weight coefficient prestored or real-time calculated to convert beam domain signal into baseband IQ signal of every channel, and respectively sending baseband IQ signal of every channel to correspondent intermediate frequency signal processing portion, in the intermediate frequency processing part, an input intermediate frequency analog signal is obtained through digital up-conversion and D/A conversion and is output to the radio frequency front end/channel simulator.

In the above embodiment, the present invention may perform beamforming on the analog signal of the satellite-borne radio frequency front end in the uplink direction, solve the IP data packet, and send the IP data packet to the feed and inter-satellite link, and may perform unpacking on the IP data packet of the feed and inter-satellite link in the downlink direction, and send the IP data packet to the radio frequency front end through beamforming, so as to perform technical verification of the low-earth satellite constellation system. To better illustrate the application of the present invention, the process is specifically described as follows:

firstly, a software radio platform, an SCA platform, a protocol and network processing module, a switch and related matching devices of an intermediate frequency signal processing module are used for building a platform;

designing a software radio platform and SCA platform interface of a satellite-borne mixed multi-beam forming system and a radio frequency front end or a channel simulator interface, an intermediate frequency signal processing module, an SCA platform and protocol and network processing module interface, a protocol and network processing module to control display interface and configuring related parameter items;

thirdly, carrying out digital logic design of each module in a software radio platform and an SCA platform of the intermediate frequency signal processing module;

and step four, carrying out verification of each technical system of the low-orbit satellite system in the uplink direction and the downlink direction.

The embodiment can find that the hybrid multi-beam forming system provided by the utility model is an important component for carrying out simulation verification on a low-earth orbit satellite system communication system and various key technologies, can quickly adapt to the simulation iteration requirement along with the deepening of simulation, and has the characteristics of applicability, stability, flexibility and the like. The present application does not relate to any method improvement, wherein if a method or an algorithm is involved, the method or the algorithm is implemented by using the prior art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A satellite-borne hybrid multi-beam forming system is characterized by comprising an intermediate frequency signal processing module in communication connection with a radio frequency front end/channel simulator, wherein the intermediate frequency signal processing module is connected with a beam forming and baseband processing module, and the beam forming and baseband processing module is connected with a protocol and network processing module.

2. The satellite-borne hybrid multi-beam forming system according to claim 1, wherein the beam forming and baseband processing module is a SCA platform comprising N FPGAs with symmetrical structure, each FPGA interconnected with each other at high speed for cooperative operation, N being a positive integer.

3. The system of claim 2, wherein the SCA platform comprises 4 FPGAs with symmetrical structures, A, B, C, D boards, wherein a board is a beam synthesis module for synthesizing uplink and downlink beams, a board B and a board D are baseband signal processing modules for processing baseband signals, and a board C is a data interaction and testing module for performing data interaction and function testing on a beam data collection protocol and network processing module.

4. The system according to claim 3, wherein the beamforming modules comprise an uplink beamforming module, a downlink beamforming module, a sampling testing module I, a control monitoring module I, a group unpacking module I, and a group unpacking module II;

the intermediate frequency signal processing module unpacks a packet module communication connection with the group, the group unpacks a packet module I and an ascending beam forming module communication connection, the ascending beam forming module unpacks a packet module communication connection with the group, control monitoring module I and group unpack a packet module I, a group unpack module II, an ascending beam forming module communication connection, the real-time data of group unpack module I, control monitoring module I tests in the operation process of a sampling test module collection system, the output end of sampling test module I is connected with group unpack module II, group unpack module II and baseband signal processing module communication connection.

5. The satellite-borne hybrid multi-beam forming system according to claim 3, wherein the baseband signal processing module comprises a baseband processing module, a second sampling test module, a second control monitoring module, a third group unpacking module, and a fourth group unpacking module;

the beam forming module is in three-way communication connection with the group unpacking module, the group unpacking module III is in communication connection with the baseband processing module, the baseband processing module is in four-way communication connection with the group unpacking module, the control monitoring module II is in three-way communication connection with the group unpacking module, the group unpacking module IV is in four-way communication connection with the baseband processing module, the real-time data of the group unpacking module III and the control monitoring module II are tested in the running process of the two sampling and testing module acquisition system, the output end of the sampling and testing module II is connected with the group unpacking module IV, and the group unpacking module IV is in four-way communication connection with the protocol and the network processing module.

6. The system according to claim 3, wherein the intermediate frequency signal processing module comprises N software radio platforms, the software radio platforms are connected to the SCA platform through SFP + optoelectronic modules and encapsulated by AURORA protocol, the a board is connected to N/2 software radio platforms to receive and transmit baseband data of N pairs of antennas, and at the time of uplink, the software radio platforms upload two paths of baseband IQ data, frequency domain data, and status information to the SCA platform; and at the downlink moment, the software radio platform receives downlink beam forming processing data and control information sent by the SCA board.

7. The system of claim 6, wherein the software defined radio platform comprises a digital up-conversion module that interpolates, filters, and spectrally linearly shifts baseband signals, converts the baseband signals to intermediate frequency signals, and transmits the intermediate frequency signals to a wireless interface module; the digital down-conversion module is used for extracting and filtering the intermediate frequency signals, linearly moving frequency spectrums, converting the intermediate frequency signals into baseband signals and transmitting the baseband signals to the beam forming and baseband processing module.

8. The satellite-borne hybrid multibeam shaping system of claim 7, wherein the digital up-conversion comprises two stages of half-band HB filters, one stage of CIC filters and a mixer, the half-band HB and CIC filters implementing an n-fold interpolation without aliasing of the signal, the mixer shifting the baseband signal spectrum to an intermediate frequency spectrum;

the digital down-conversion comprises a mixer, a first-stage CIC filter and a two-stage half-band HB filter, the half-band HB filter and the CIC filter realize n times of extraction of signals without aliasing, and the mixer moves the frequency spectrum of an intermediate frequency signal to a baseband.

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