A link flexible autonomous maneuvering communication control device supporting multi-beam phased array

Abstract

The application discloses a kind of link flexible autonomous agile communication control devices of supporting multi-beam phased array, it is related to satellite communication signal processing field.The application includes service signal processing module, beam pointing control module, power division and synthesis module, antenna array module, time-frequency processing module;Service signal processing module completes each beam signal modulation and demodulation, coding and decoding and beam pointing angle calculation;Beam pointing control module is according to beam pointing angle calculation and resolves the amplitude and phase weighting value of each component in power division and synthesis module;Power division and synthesis module realizes signal power distribution / signal synthesis network;Antenna array module completes radio frequency signal wireless signal transceiver;Time-frequency processing module generates the second impulse and working clock required by system.The application supports more flexible multi-beam phased array link beam agile scheduling, scheduling time and scheduling period are not coupled between each beam group, not linkage, meet the application scene of different communication system.

Description

Technical Field

[0001] This invention relates to the field of satellite communication signal processing, and in particular to a flexible, autonomous, and agile communication control device that supports multi-beam phased array links. Background Technology

[0002] In recent years, with the increasing communication demands of users at different levels for low-Earth orbit (LEO) satellite internet, independent beam scheduling based on LEO satellite-to-ground agile communication has become one of the research hotspots in the field of satellite communication. Currently, traditional satellite-to-ground multi-beam phased array communication links can only support multiple beam binding scheduling, and each beam must be coordinated and pointed. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and propose a flexible and autonomous agile communication control device that supports multi-beam phased array links. This invention is simple to implement, and the scheduling function between agile multi-beam groups is not decoupled. It can independently realize the scheduling of each beam group and is suitable for various communication application scenarios.

[0004] The technical solution adopted in this invention is as follows:

[0005] A link-flexible and autonomous agile communication control device supporting multi-beam phased array includes a service signal processing module (1), a beam pointing control module (2), a power dividing and combining module (3), an antenna array module (4), and a time and frequency processing module (5).

[0006] The service signal processing module (1) is used to complete the modulation and demodulation of multiple signals, signal encoding and decoding, frequency adjustment, and calculate the pointing angle information and beam scheduling LOAD time flag of each beam according to the information of the network user terminal. The information is sent to the beam pointing control module (2) and the power divider and combiner module (3) through the LVDS interface and RS422 interface respectively.

[0007] The beam pointing control module (2) calculates and decomposes the amplitude and phase weighting values ​​of each component based on the beam angle information of each group, and sends them to the power division and synthesis module (3) to independently complete the beam pointing calculation and analysis.

[0008] The power splitting and combining module (3) completes the synthesis or distribution of signals based on the amplitude and phase weighting values ​​issued by the beam pointing control module (2), and performs beam scheduling for each group based on the LOAD signal issued by the service signal processing module (1).

[0009] The antenna array module (4) completes the wireless signal transmission and reception of radio frequency signals of each channel component;

[0010] The time and frequency processing module (5) generates a unified PPS signal and a 100MHz working clock.

[0011] Furthermore, the service signal processing module (1) and the power division and synthesis module (3) adopt a modular design. Each group of units is configured with the same number of FPGAs, CPUs and frequency conversion channels, and each group independently supports the processing of two channels of service information.

[0012] The beam pointing control module (2) receives and parses multiple sets of LVDS angle information from the service signal processing module (1) in parallel, and outputs them to the power divider and synthesizer module (3); the service signal processing module (1) performs time counting while sending each set of LVDS, generates the LOAD time of the corresponding set after 125us, and outputs it to the power divider and synthesizer module (3).

[0013] The power divider and combiner module (3) uses a dual-channel phase-shifting chip, supports the configuration of two beam angle information, and is not coupled with the scheduling time of the other beams;

[0014] According to the on-orbit mission application requirements, the service signal processing module (1) loads the software version program and completes the signal processing and frequency conversion of each beam, and calculates the actual pointing angle information of each service beam.

[0015] The service signal processing module (1) sends the radio frequency analog signal to the power divider and synthesizer module (3) through the SMA interface. The angle information and LOAD information are sent to the beam pointing control module (2) and the power divider and synthesizer module (3) through the LVDS interface and RS422 interface. The beam pointing control module (2) parses the amplitude and phase weighting values ​​of each component in the power divider and synthesizer module (3) and sends them through the SPI bus. The power divider and synthesizer module (3) amplifies the radio frequency signal, performs signal splitting / synthesis according to the amplitude and phase weighting values ​​of each component, and waits for the LOAD signal to be executed. The antenna array module (4) completes the wireless reception or transmission of signals from each component.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This invention defines beam groups, each of which independently performs beam scheduling according to its own pointing angle information and load execution information, thereby eliminating functional coupling between beams and realizing flexible scheduling and configuration of satellite-to-ground agile multi-beams.

[0018] 2. This invention can define two beams as a beam group by using a dual-channel phase-shifting chip. The scheduling period within the group is N*125us (N is a positive integer, and different beams can have different N values), and the scheduling time within the group is uniform.

[0019] 3. This invention supports linkage between different groups, and the scheduling cycle and scheduling time between different beam groups can be defined according to the needs of different communication systems. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the application scenario of the present invention.

[0021] Figure 2 This is a schematic diagram of the principle of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Reference Figure 1 and Figure 2 A flexible, autonomous, and agile communication control device supporting multi-beam phased array links includes a signal processing module 1, a beam pointing control module 2, a power divider and combiner module 3, and an antenna array module 4. Figure 1 This invention relates to an application scenario of a flexible, autonomous, and agile communication control method for multi-beam phased array links. Figure 2 This is the connection line in the embodiment.

[0024] The service signal processing module 1 is used to complete the modulation and demodulation of multiple signals, signal encoding and decoding, frequency adjustment, and calculate the pointing angle information and beam scheduling time flag of each beam according to the information of the network user terminal. The information is then sent to the beam pointing control module 2 and the power divider and combiner module 3 through the LVDS interface and RS422 interface, respectively.

[0025] The beam pointing control module 2 calculates and decomposes the amplitude and phase weighting values ​​of each component based on the beam angle information of each group, and sends them to the power divider and combiner module 3 to independently complete the beam pointing calculation and analysis.

[0026] The power splitting and combining module 3 completes the signal combining or distribution according to the amplitude and phase weighting values ​​sent by the beam pointing control module 2, and performs beam scheduling for each group according to the Load signal sent by the service signal processing module 1.

[0027] Antenna array module 4 completes the wireless signal transmission and reception of radio frequency signals of each channel component.

[0028] The business signal processing module 1 and the power divider and synthesizer module 3 adopt a modular design. Each unit is configured with the same number of FPGAs, CPs and frequency conversion channels, and each unit independently supports the processing of two channels of business information.

[0029] The beam pointing control module 2 receives and parses multiple sets of LVDS angle information from the service signal processing module 1 in parallel, and outputs them to the power divider and combiner module 3; the signal processing module 1 performs time counting while sending each set of LVDS, and generates the LOAD time of the corresponding set after 125us and outputs it to the power divider and combiner module 3.

[0030] The power divider and combiner module 3 uses a dual-channel phase-shifting chip, supports configuration of two beam angle information, and is not coupled with the scheduling time of other beams;

[0031] Based on the on-orbit mission application requirements, the service signal processing module 1 loads the software version program and completes signal processing and frequency conversion for each beam, calculating the actual pointing angle information of each service beam. The signal processing module 1 sends the RF analog signal to the power divider and combiner module 3 via the SMA interface, and sends the beam angle information and scheduling time of each group to the beam pointing control module 2 and the power divider and combiner module 3 via the LVDS interface and RS422 interface, respectively. The beam pointing control module 2 parses the amplitude and phase weighting values ​​of each component and sends them down via the SPI bus. The power divider and combiner module 3 amplifies the RF signal, performs signal splitting / combining based on the amplitude and phase weighting values ​​of each component, and waits for the load signal to execute. The antenna array module 4 completes the wireless reception or transmission of signals from each component.

[0032] This device can support unlinked and uncoupled scheduling of each beam group, meeting the application scenarios of different users and increasing the availability and flexibility of the payload equipment.

[0033] In summary, this invention supports a flexible and autonomous agile communication control method for multi-beam phased array links. Each pair of beams is bound together to achieve both access and service communication functions. Several beam groups can be used in combination to meet the communication requirements of different coverage areas or different user communication systems. This invention supports more flexible beam agile scheduling for multi-beam phased array links, with no coupling or linkage between the scheduling times and cycles of each beam group (two beams), satisfying application scenarios of different communication systems.

Claims

1. A link-flexible, autonomous, and agile communication control device supporting multi-beam phased arrays, characterized in that, It includes a service signal processing module (1), a beam pointing control module (2), a power divider and synthesizer module (3), an antenna array module (4), and a time and frequency processing module (5). The service signal processing module (1) is used to complete the modulation and demodulation of multiple signals, signal encoding and decoding, frequency adjustment, calculate the pointing angle information and beam scheduling LOAD time flag of each group of beams according to the information of the network user terminal, and send the pointing angle information to the beam pointing control module (2) through the LVDS interface, and send the beam scheduling LOAD time flag to the power division and synthesis module (3) through the RS422 interface. Each group of beams is composed of two beams bound together. The beam pointing control module (2) calculates and decomposes the amplitude and phase weighting values ​​of each component based on the beam angle information of each group, and sends them to the power division and synthesis module (3) to independently complete the beam pointing calculation and analysis. The power splitting and combining module (3) completes the synthesis or distribution of signals based on the amplitude and phase weighting values ​​issued by the beam pointing control module (2), and performs beam scheduling for each group based on the Load signal issued by the service signal processing module (1). The antenna array module (4) completes the wireless signal transmission and reception of radio frequency signals of each channel component; The time and frequency processing module (5) generates a unified PPS signal and a 100MHz working clock.

2. The link flexible, autonomous, and agile communication control device supporting multi-beam phased arrays according to claim 1, characterized in that, The business signal processing module (1) and the power division and synthesis module (3) adopt a modular design. Each unit of the business signal processing module (1) is configured with the same number of FPGAs, CPUs and frequency conversion channels. The beam pointing control module (2) adopts a dual-channel phase shifting chip. Each group independently supports the processing of two channels of business information, and the time frequency and second pulse of each group of resources are unified. The beam pointing control module (2) receives and parses multiple sets of LVDS angle information from the service signal processing module (1) in parallel, and outputs them to the power divider and synthesizer module (3); the signal processing module (1) performs time counting while sending each set of LVDS, and generates the LOAD time of the corresponding set after 125us and outputs it to the power divider and synthesizer module (3). According to the on-orbit mission application requirements, the service signal processing module (1) loads the software version program and completes the signal processing and frequency conversion of each beam, and calculates the actual pointing angle information of each service beam. The service signal processing module (1) sends the radio frequency analog signal to the power divider and combiner module (3) through the SMA interface, sends the pointing angle information to the beam pointing control module (2) through the LVDS interface, and sends the beam scheduling LOAD time flag to the power divider and combiner module (3) through the RS422 interface; the beam pointing control module (2) parses the amplitude and phase weighting values ​​of each component in the power divider and combiner module (3) and sends them through the SPI bus; the power divider and combiner module (3) amplifies the radio frequency signal, performs signal splitting / combining according to the amplitude and phase weighting values ​​of each component, and waits for the LOAD signal to be executed; the antenna array module (4) completes the wireless reception or transmission of the signals of each component.

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