A phased array agile synchronization control device based on onboard switching

Abstract

The present invention discloses a phased array agile synchronization control device based on onboard exchange, which relates to the field of onboard payload processing for satellite communications. It includes an onboard network control unit, a payload monitoring unit, an onboard exchange unit, an onboard modulation and demodulation unit, and a phased array antenna. The onboard network control unit realizes the calculation and generation of the agile wave position arrangement plan, the payload monitoring unit realizes the calculation and configuration of the agile wave position pointing angle of the phased array antenna, the onboard exchange unit realizes the management of service data queuing, the frame plan sending timing, the synchronization control of the service data sending timing and the agile timing of the phased array antenna, the onboard modem unit completes the caching of service data and the downlink framing sending, and the onboard phased array antenna realizes the execution of agile configuration instructions. The present invention realizes intra-satellite and satellite-to-ground agile synchronization, and solves the problem of multiple heterogeneous entities collaboratively completing the agile control of the phased array antenna.

Description

Technical Field

[0001] The invention designs a phased array agile synchronization control device based on onboard exchange, belonging to the field of onboard payload processing of satellite communications. Background Art

[0002] Traditional satellite communication systems generally use parabolic antennas to ensure the communication needs of users in fixed locations. The gradual application of satellite-borne phased array antennas provides a solution to the problem of supporting simultaneous communication of multiple users under limited satellite wave resources. However, in the process of agile application of phased arrays, new problems are faced, such as synchronization of business data transmission and agile control timing, and synchronization of satellite-to-ground data transmission between multiple functional entities within the satellite. Summary of the invention

[0003] The purpose of the present invention is to avoid the shortcomings of the above-mentioned background technology and provide a phased array agile synchronization control device based on onboard exchange. The present invention uses onboard exchange as a synchronization control center to control the phased array jump timing, modulator data transmission timing, and frame plan transmission timing, to achieve intra-satellite and satellite-to-ground agile synchronization, and solves the problem of multiple heterogeneous entities collaboratively completing the agile control of phased array antennas.

[0004] The technical solution adopted by the present invention is:

[0005] A phased array agile synchronization control device based on onboard switching, comprising an onboard network control unit 1, a load monitoring unit 2, an onboard switching unit 3, an onboard modem unit 4 and an onboard phased array antenna 5;

[0006] The satellite network control unit 1 receives the terminal information input from the outside, calculates the phased array antenna agile wave position arrangement plan according to the network access status and terminal position in the terminal information, outputs it to the load monitoring unit 2, and generates the terminal data queue mapping relationship table and frame plan information according to the terminal station type and the agile wave position arrangement plan, and outputs it to the satellite switching unit 3;

[0007] The payload monitoring unit 2 receives the platform information input from the outside and the phased array antenna agile wave position arrangement plan output by the satellite network control unit 1, calculates the phased array antenna agile wave position pointing angle, generates the phased array antenna parameter configuration frame and sends it to the satellite switching unit 3;

[0008] The onboard switching unit 3 sends the externally input terminal service data identifier logical port number to the onboard modulation and demodulation unit 4 according to the terminal data enqueue mapping relationship table input by the onboard network control unit 1; and generates a synchronous control timing according to the frame plan information output by the onboard network control unit 1 and the phased array antenna parameter configuration frame output by the load monitoring unit 2, generates a time slot configuration frame and an agile pointing configuration instruction frame, sends the time slot configuration frame and the frame plan information of the broadcast logical port identifier on the encapsulation to the onboard modulator unit 4, and sends the agile pointing configuration instruction frame to the onboard phased array antenna 5;

[0009] The onboard modem unit 4 caches the terminal service data into different data queues according to the terminal service data identifier output by the onboard switching unit 3, caches the frame plan information into the broadcast queue according to the broadcast logical port identifier, and selects the frame plan information and the terminal service data for framing and modulation and sends them out according to the time slot configuration frame output by the onboard switching unit 3;

[0010] The onboard phased array antenna 5 receives the agile pointing configuration instruction frame output by the onboard switching unit 3, parses the beam pointing angle information, executes the configuration command, and controls the phased array antenna to point to a specific angle.

[0011] Furthermore, the onboard switching unit 3 includes a protocol processing module 3-1, a queue management module 3-2, a synchronization pulse control module 3-3, a frame plan management module 3-4, a phased array parameter analysis module 3-5, a time slot configuration module 3-6 and an agile pointing configuration module 3-7;

[0012] The protocol processing module 3-1 receives the terminal data enqueue mapping relationship table and frame plan information issued by the satellite network control unit 1, sends the terminal data enqueue mapping relationship table to the enqueue management module 3-2 by identifying the data frame protocol field, and sends the frame plan information to the frame plan management module 3-4;

[0013] The queue management module 3-2 searches the queue mapping table according to the destination station address in the terminal service data stream, encapsulates the queried logical port identifier into the service data frame header, and encapsulates the broadcast logical port identifier into the service data frame header if the query fails, and sends the service data to the onboard modem unit 4;

[0014] The synchronization pulse control module 3-3 generates a synchronization pulse signal based on the external input second pulse signal, and distributes it to the frame plan management module 3-4, the phased array parameter analysis module 3-5 and the time slot configuration module 3-6 respectively;

[0015] The frame plan management module 3-4 caches and sorts the frame plan information, and encapsulates the cached frame plan information with a broadcast logical port identifier according to the synchronization pulse signal input by the synchronization pulse control module 3-3, and sends it to the onboard modem unit 4 and the phased array parameter analysis module 3-5;

[0016] The phased array parameter parsing module 3-5 receives the phased array antenna parameter configuration frame configured by the load monitoring unit 2 and performs cache sorting. According to the synchronization pulse information input by the synchronization pulse control module 3-3 and the frame plan information content sent by the frame plan management module 3-4, the corresponding phased array antenna parameter configuration frame content is parsed, and the agile wave position sequence is sent to the time slot configuration module 3-6, and the agile wave position antenna pointing information is sent to the agile pointing configuration module 3-7;

[0017] The time slot configuration module 3-6 receives the agile wave position sequence sent by the phased array parameter analysis module 3-5, generates a time slot configuration frame according to the synchronization pulse information input by the synchronization pulse control module 3-3, and sends it to the onboard modem unit 4;

[0018] The agile pointing configuration module 3 - 7 receives the agile wave position antenna pointing information sent by the phased array parameter analysis module 3 - 5 , assembles it into an agile pointing configuration instruction frame and sends it to the onboard phased array antenna 5 .

[0019] Furthermore, the satellite-borne network control unit 1 calculates the agile wave position arrangement plan of the phased array antenna, specifically:

[0020] The agile wave position sequence within a single cycle is arranged based on the wave position number of the terminal and the order of the terminal's network access, and the number of cycles of the agile wave position is arranged according to the externally configured time slot factor information. The final phased array antenna agile wave position plan is generated by combining the agile wave position sequence and the number of cycles of the agile wave position.

[0021] Compared with the background technology, the present invention has the following advantages:

[0022] 1. The present invention uses the satellite-borne switching unit as the synchronization center to control the phased array jump timing, modulator data transmission timing, and frame plan transmission timing, thereby achieving intra-satellite and satellite-to-ground agile synchronization and meeting the communication needs of multiple users.

[0023] 2. The present invention supports controlling the hopping of satellite-borne phased array antennas in a business data-driven manner, and has the characteristics of making full use of the phased array antenna beam and time slot resources.

[0024] 3. The present invention solves the problems of realizing business data transmission and agile control timing synchronization, satellite-to-ground data transmission synchronization, etc. among multiple functional entities inside the satellite. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is an electrical schematic diagram of an embodiment of a phased array agile synchronization control device based on satellite-borne exchange of the present invention.

[0026] Figure 2 It is an electrical schematic diagram of an embodiment of the satellite-borne switching unit of the present invention. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 , Attachment Figure 2 The present invention is further described with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 As shown, a phased array agile synchronization control device based on onboard switching includes an onboard network control unit 1, a payload monitoring unit 2, an onboard switching unit 3, an onboard modem unit 4 and an onboard phased array antenna 5;

[0029] The satellite network control unit 1 receives the terminal information input from the outside, calculates the phased array antenna agile wave position arrangement plan according to the network access status and terminal position in the terminal information, outputs it to the load monitoring unit 2, and generates the terminal data queue mapping relationship table and frame plan information according to the terminal station type and the agile wave position arrangement plan, and outputs it to the satellite switching unit 3;

[0030] The calculation of the phased array antenna agile wave position arrangement plan is specifically as follows: the agile wave position sequence in a single cycle is arranged based on the wave position number of the terminal and the network access order of the terminal, and the number of cycles of the agile wave position is arranged according to the externally configured time slot factor information, and the final phased array antenna agile wave position plan is generated by combining the agile wave position sequence and the number of cycles of the agile wave position;

[0031] The payload monitoring unit 2 receives the platform information input from the outside and the phased array antenna agile wave position arrangement plan output by the satellite network control unit 1, calculates the phased array antenna agile wave position pointing angle, generates the phased array antenna parameter configuration frame and sends it to the satellite switching unit 3;

[0032] The onboard switching unit 3 sends the externally input terminal service data identifier logical port number to the onboard modulation and demodulation unit 4 according to the terminal data enqueue mapping relationship table input by the onboard network control unit 1; and generates a synchronous control timing according to the frame plan information output by the onboard network control unit 1 and the phased array antenna parameter configuration frame output by the load monitoring unit 2, generates a time slot configuration frame and an agile pointing configuration instruction frame, sends the time slot configuration frame and the frame plan information of the broadcast logical port identifier on the encapsulation to the onboard modulator unit 4, and sends the agile pointing configuration instruction frame to the onboard phased array antenna 5;

[0033] The onboard modem unit 4 caches the terminal service data into different data queues according to the terminal service data identifier output by the onboard switching unit 3, caches the frame plan information into the broadcast queue according to the broadcast logical port identifier, and selects the frame plan information and the terminal service data for framing and modulation and sends them out according to the time slot configuration frame output by the onboard switching unit 3;

[0034] The onboard phased array antenna 5 receives the agile pointing configuration instruction frame output by the onboard switching unit 3, parses the beam pointing angle information, executes the configuration command, and controls the phased array antenna to point to a specific angle.

[0035] like Figure 2 As shown, the satellite-borne switching unit 3 includes a protocol processing module 3-1, a queue management module 3-2, a synchronization pulse control module 3-3, a frame plan management module 3-4, a phased array parameter analysis module 3-5, a time slot configuration module 3-6 and an agile pointing configuration module 3-7;

[0036] The protocol processing module 3-1 receives the terminal data enqueue mapping relationship table and frame plan information issued by the satellite network control unit 1, sends the terminal data enqueue mapping relationship table to the enqueue management module 3-2 by identifying the data frame protocol field, and sends the frame plan information to the frame plan management module 3-4;

[0037] The queue management module 3-2 searches the queue mapping table according to the destination station address in the terminal service data stream, encapsulates the queried logical port identifier into the service data frame header, and encapsulates the broadcast logical port identifier into the service data frame header if the query fails, and sends the service data to the onboard modem unit 4;

[0038] The synchronization pulse control module 3-3 generates a synchronization pulse signal based on the external input second pulse signal, and distributes it to the frame plan management module 3-4, the phased array parameter analysis module 3-5 and the time slot configuration module 3-6 respectively;

[0039] The frame plan management module 3-4 caches and sorts the frame plan information, and encapsulates the cached frame plan information with a broadcast logical port identifier according to the synchronization pulse signal input by the synchronization pulse control module 3-3, and sends it to the onboard modem unit 4 and the phased array parameter analysis module 3-5;

[0040] The phased array parameter parsing module 3-5 receives the phased array antenna parameter configuration frame configured by the load monitoring unit 2 and performs cache sorting. According to the synchronization pulse information input by the synchronization pulse control module 3-3 and the frame plan information content sent by the frame plan management module 3-4, the corresponding phased array antenna parameter configuration frame content is parsed, and the agile wave position sequence is sent to the time slot configuration module 3-6, and the agile wave position antenna pointing information is sent to the agile pointing configuration module 3-7;

[0041] The time slot configuration module 3-6 receives the agile wave position sequence sent by the phased array parameter analysis module 3-5, generates a time slot configuration frame according to the synchronization pulse information input by the synchronization pulse control module 3-3, and sends it to the onboard modem unit 4;

[0042] The agile pointing configuration module 3 - 7 receives the agile wave position antenna pointing information sent by the phased array parameter analysis module 3 - 5 , assembles it into an agile pointing configuration instruction frame and sends it to the onboard phased array antenna 5 .

Claims

1. A phased array agile synchronization control device based on onboard switching, characterized in that: It comprises a satellite-borne network control unit (1), a load monitoring unit (2), a satellite-borne switching unit (3), a satellite-borne modem unit (4) and a satellite-borne phased array antenna (5); The satellite network control unit (1) receives terminal information input from the outside, calculates the phased array antenna agile wave position arrangement plan according to the network access status and terminal position in the terminal information, outputs it to the load monitoring unit (2), and generates a terminal data queue mapping relationship table and frame plan information according to the terminal station type and the agile wave position arrangement plan, and outputs it to the satellite switching unit (3); The payload monitoring unit (2) receives the platform information input from the outside and the phased array antenna agile wave position arrangement plan output by the satellite network control unit (1), calculates the phased array antenna agile wave position pointing angle, generates a phased array antenna parameter configuration frame and sends it to the satellite switching unit (3); The onboard switching unit (3) sends the externally input terminal service data identification logical port number to the onboard modulation and demodulation unit (4) according to the terminal data enqueue mapping relationship table input by the onboard network control unit (1); and generates a synchronous control timing according to the frame plan information output by the onboard network control unit (1) and the phased array antenna parameter configuration frame output by the load monitoring unit (2), generates a time slot configuration frame and an agile pointing configuration instruction frame, sends the time slot configuration frame and the frame plan information of the broadcast logical port identification on the encapsulation to the onboard modulator unit (4), and sends the agile pointing configuration instruction frame to the onboard phased array antenna (5); The onboard modulation and demodulation unit (4) caches the terminal service data in different data queues according to the terminal service data identifier output by the onboard switching unit (3), caches the frame plan information in the broadcast queue according to the broadcast logical port identifier, and selects the frame plan information and the terminal service data for framing and modulation and sends them out according to the time slot configuration frame output by the onboard switching unit (3); The onboard phased array antenna (5) receives the agile pointing configuration instruction frame output by the onboard switching unit (3), analyzes the beam pointing angle information, executes the configuration command, and controls the phased array antenna to point to a specific angle.

2. The phased array agile synchronization control device based on onboard switching according to claim 1, characterized in that: The onboard switching unit (3) comprises a protocol processing module (3-1), a queue management module (3-2), a synchronization pulse control module (3-3), a frame plan management module (3-4), a phased array parameter analysis module (3-5), a time slot configuration module (3-6) and an agile pointing configuration module (3-7); The protocol processing module (3-1) receives the terminal data enqueue mapping relationship table and frame plan information sent by the satellite network control unit (1), sends the terminal data enqueue mapping relationship table to the enqueue management module (3-2) by identifying the data frame protocol field, and sends the frame plan information to the frame plan management module (3-4); The queue management module (3-2) searches the queue mapping table according to the destination station address in the terminal service data stream, encapsulates the queried logical port identifier into the service data frame header, and if the query fails, encapsulates the broadcast logical port identifier into the service data frame header, and sends the service data to the onboard modulation and demodulation unit (4); The synchronization pulse control module (3-3) generates a synchronization pulse signal based on an externally input second pulse signal, and distributes the synchronization pulse signal to the frame plan management module (3-4), the phased array parameter analysis module (3-5) and the time slot configuration module (3-6); The frame plan management module (3-4) caches and sorts the frame plan information, and encapsulates the cached frame plan information with a broadcast logic port identifier according to the synchronization pulse signal input by the synchronization pulse control module (3-3), and sends it to the onboard modulation and demodulation unit (4) and the phased array parameter analysis module (3-5); The phased array parameter parsing module (3-5) receives the phased array antenna parameter configuration frame configured by the load monitoring unit (2) and performs cache sorting, and parses the corresponding phased array antenna parameter configuration frame content according to the synchronization pulse information input by the synchronization pulse control module (3-3) and the frame plan information content sent by the frame plan management module (3-4), sends the agile wave position sequence therein to the time slot configuration module (3-6), and sends the agile wave position antenna pointing information to the agile pointing configuration module (3-7); The time slot configuration module (3-6) receives the agile wave position sequence sent by the phased array parameter analysis module (3-5), generates a time slot configuration frame according to the synchronization pulse information input by the synchronization pulse control module (3-3), and sends it to the onboard modulation and demodulation unit (4); The agile pointing configuration module (3-7) receives the agile wave position antenna pointing information sent by the phased array parameter analysis module (3-5), assembles it into an agile pointing configuration instruction frame and sends it to the onboard phased array antenna (5).

3. The phased array agile synchronization control device based on onboard switching according to claim 1, characterized in that: The satellite-borne network control unit (1) calculates the agile wave position arrangement plan of the phased array antenna, specifically: The agile wave position sequence within a single cycle is arranged based on the wave position number of the terminal and the order of the terminal's network access, and the number of cycles of the agile wave position is arranged according to the externally configured time slot factor information. The final phased array antenna agile wave position plan is generated by combining the agile wave position sequence and the number of cycles of the agile wave position.

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