Method and system for AB type laser terminal to autonomously form a ring communication network

Abstract

This invention provides a method and system for autonomously constructing a ring communication network using AB-type laser terminals. This method can be applied to communication networks composed of multiple satellites, with each satellite equipped with an AB-type laser terminal. The method includes: constructing a ring communication network based on the AB-type laser terminals on each satellite; when inter-satellite communication tasks exist, the inter-satellite laser terminals identify a first target satellite and a second target satellite based on inter-satellite routing; identifying laser communication terminals A and B, which require link establishment, on the first and second target satellites; and finally, based on platform information provided by the satellite platform, calculating the position pointed to by the laser terminals at time t0, and performing target acquisition, tracking, and communication. This effectively solves the constellation network topology and inter-satellite laser routing problems, ensuring the smooth operation of satellite missions.

Description

Technical Field

[0001] This invention belongs to the field of inter-satellite laser communication technology, specifically relating to a method and system for AB-type laser terminals to autonomously construct a ring communication network. Background Technology

[0002] To reliably and stably use inter-satellite lasers for high-speed data transmission and thus ensure the smooth operation of satellite missions, it is necessary to solve the inter-satellite communication problem of small constellations of AB-type laser terminals, namely the constellation network topology and inter-satellite laser routing problem.

[0003] Currently, there are two networking methods: minimal network and reconfigurable network with multiple configurations. Minimal networks can maintain a fixed routing table or achieve a reconfigurable network within the field of view; AB-type laser terminals use fixed bands to ensure link stability. After research, the existing technical solutions are mainly as follows: The patent document with application number CN202311003281.1 and titled "A Massive Satellite Inter-Satellite Information Security Transmission System and Method" includes a satellite, a ground station, and a data center in the system; the satellite includes a satellite body, a multi-functional payload motherboard, and multiple mission module units mounted on the multi-functional payload motherboard.

[0004] The patent document with application number CN202310557080.X and title "A Beaconless Inter-Satellite Laser Terminal System Applicable to Space Network Nodes" describes a system applicable to beaconless inter-satellite laser terminal systems for space network nodes. It eliminates the need for dedicated beacon light and uses signal light to simultaneously achieve laser terminal capture, tracking, and communication.

[0005] The patent document with application number CN201711377405.7 and title "A Reverse Modulation Laser Network Communication System Based on Cat's Eye Effect" uses a large field-of-view reverse modulation laser communication terminal based on the cat's eye effect as an information node. By matching the modulator array with the photodetector array, it can simultaneously and quickly establish communication links with multiple active communication terminals in the effective market, thereby realizing laser network communication.

[0006] The patent document with application number CN202210513169.1 and title "A Multi-orbit Spaceborne Laser Communication Terminal System" describes a system that serves as a spaceborne payload to establish a communication link with a ground terminal. It uses laser as an information carrier for information exchange and transmission, enabling laser communication between space and ground, between satellites, and between ground terminals. Ultimately, it achieves laser communication between space and ground, between satellites, and between ground terminals using a single optical transceiver system and a tracking and aiming system.

[0007] The patent document, with application number CN201810270423.3 and titled "A Topology Reconfiguration Method for Rapid Inter-Satellite Laser Communication Networking," describes a method that includes electing a centralized controller responsible for global bandwidth requirements and link information collection, processing, and distribution; iteratively deleting initial inter-satellite links according to bandwidth utilization using a minimum set rule; reallocating inter-satellite optical link service bearers based on forwarding count and connectivity constraints; and disabling redundant inter-satellite optical links.

[0008] However, none of the above solutions can effectively solve the constellation network topology and laser inter-satellite routing problems, resulting in satellite missions failing to proceed smoothly. Summary of the Invention

[0009] To address the shortcomings of existing technologies, the purpose of this invention is to provide a method and system for an AB-type laser terminal to autonomously construct a ring communication network.

[0010] In a first aspect, the present invention provides a method for an AB-type laser terminal to autonomously construct a ring communication network, applicable to a communication network composed of multiple satellites, wherein each satellite is equipped with an AB-type laser terminal, the method comprising: A ring communication network was constructed based on AB-type laser terminals on each satellite; When inter-satellite communication missions are in place, inter-satellite lasers identify the first and second target satellites based on inter-satellite routes. Confirm the laser communication laser terminal A and laser terminal B that need to establish a link on the first target satellite and the second target satellite; Based on the platform information provided by the satellite platform, the laser communication terminals of the first target satellite and the second target satellite respectively calculate the position pointed to by the laser terminal at time t0, and perform target acquisition, tracking and communication.

[0011] Optionally, the platform information includes: the position and velocity of the local satellite, its orbital information and attitude parameters, and the estimated position and velocity of the target satellite; wherein: The target satellite's position and velocity are predicted from ground-based data at intervals, and the platform calculates them in real time based on this prediction information.

[0012] Alternatively, the methods for constructing a ring communication network based on AB-type laser terminals on each satellite include: Construct a ring communication network by maintaining a fixed routing table using a minimum network approach; A ring communication network is constructed using various autonomous reconfiguration methods.

[0013] Optionally, when a ring communication network is formed by AB-type laser terminals of four satellites, the minimum communication network can be arranged in a ring or butterfly shape according to the satellite array.

[0014] Optionally, the AB type laser terminal is used in conjunction with the following settings: Laser terminal A receives wavelength a and transmits wavelength b; Laser terminal B receives wavelength b and transmits wavelength a.

[0015] Optionally, the field of view of the AB-type laser terminal is determined based on the minimum network four-star network configuration and the link topology; The satellite IP address remains unchanged, but the MAC address can be changed.

[0016] Optionally, the inter-satellite laser identifies the first target satellite and the second target satellite based on the inter-satellite route, including: After the satellite receives the mission, the laser inter-satellite routing selects the first and second target satellites that need to communicate, and determines the type of laser terminal used by the first and second target satellites.

[0017] Secondly, the present invention also provides a system for autonomously constructing a ring communication network using an AB-type laser terminal, applicable to a communication network composed of multiple satellites, wherein each satellite is equipped with an AB-type laser terminal, the system comprising: A communication network construction module is used to build a ring communication network based on AB-type laser terminals on various satellites; The target satellite confirmation module is used to confirm the first and second target satellites based on the inter-satellite route when there is an inter-satellite communication mission. The laser terminal confirmation module is used to confirm the laser communication laser terminal A and laser terminal B that need to establish a link on the first target satellite and the second target satellite. The tracking and communication module is used to calculate the position pointed to by the laser terminal at time t0 by the laser communication terminals of the first target satellite and the second target satellite respectively, based on the platform information provided by the satellite platform, and to perform target acquisition, tracking and communication.

[0018] Optionally, the platform information includes: the position and velocity of the local satellite, its orbital information and attitude parameters, and the estimated position and velocity of the target satellite; wherein: The target satellite's position and velocity are predicted from ground-based data at intervals, and the platform calculates them in real time based on this prediction information.

[0019] Optionally, the communication network construction module is specifically used for: A ring communication network can be constructed by maintaining a fixed routing table using a minimal network approach, or... A ring communication network is constructed using various autonomous reconfiguration methods.

[0020] Optionally, when a ring communication network is formed by AB-type laser terminals of four satellites, the minimum communication network can be arranged in a ring or butterfly shape according to the satellite array.

[0021] Optionally, the AB type laser terminal is used in conjunction with the following settings: Laser terminal A receives wavelength a and transmits wavelength b; Laser terminal B receives wavelength b and transmits wavelength a.

[0022] Optionally, the system further includes: The laser terminal's field of view determination module is used to determine the field of view of the AB-type laser terminal based on the minimum network four-star network configuration and the link establishment topology. The address setting module is used to set the satellite IP address to remain unchanged while the MAC address can be changed.

[0023] Optionally, the target satellite confirmation module is specifically used for: After the satellite receives the mission, the laser inter-satellite routing selects the first and second target satellites that need to communicate, and determines the type of laser terminal used by the first and second target satellites.

[0024] Thirdly, the present invention also provides a computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, it implements the steps of the method for an AB-type laser terminal to autonomously construct a ring communication network as described in the first aspect.

[0025] Fourthly, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, when the computer program is executed by the processor, it implements the steps of the method for an AB-type laser terminal to autonomously construct a ring communication network as described in the first aspect.

[0026] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a method for autonomously constructing a ring communication network using AB-type laser terminals. This method can be applied to a communication network composed of multiple satellites, with each satellite equipped with an AB-type laser terminal. A ring communication network is constructed based on the AB-type laser terminals on each satellite. When there is an inter-satellite communication task, the inter-satellite laser terminal identifies the first target satellite and the second target satellite according to the inter-satellite route. On the first and second target satellites, the laser communication terminals A and B that need to establish a link are identified. Finally, based on the platform information provided by the satellite platform, the laser communication terminals of the first and second target satellites calculate the position pointed to by the laser terminals at time t0, and perform target acquisition, tracking, and communication.

[0027] 2. This invention can effectively solve the problems of constellation network topology and inter-satellite routing for lasers, ensuring the smooth operation of satellite missions.

[0028] 3. In the optional schemes of this invention, the networking mode has two modes: minimum network and multiple autonomous reconfigurable modes. It has multiple star clusters, and the minimum network can maintain a fixed routing table or realize a reconfigurable network within the field of view. The AB type laser terminal uses a fixed band, thereby ensuring link stability. Attached Figure Description

[0029] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A flowchart illustrating a method for an AB-type laser terminal to autonomously construct a ring communication network, provided in an embodiment of the present invention; Figure 2 Two topology diagrams of 4-star constellation communication provided in embodiments of the present invention; Figure 3 A schematic diagram of the field of view of a 4-star laser terminal provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the field of view and blind zone of an AB-type laser terminal on a satellite provided in an embodiment of the present invention. Detailed Implementation

[0030] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0031] This invention provides a method and system for autonomously constructing a ring communication network using an AB-type laser terminal. It addresses the inter-satellite communication problem of small constellations for AB-type laser terminals, mainly solving the constellation network topology and laser inter-satellite routing issues, thereby ensuring the smooth operation of satellite missions.

[0032] Figure 1 A flowchart illustrating a method for an AB-type laser terminal to autonomously construct a ring communication network, as provided in an embodiment of the present invention, is shown below. Figure 1 As shown, the method in this embodiment may include: Step S101: Establish a ring communication network based on the AB-type laser terminals on each satellite.

[0033] In this embodiment, a ring communication network can be constructed by maintaining a fixed routing table according to the minimum network requirements; or, a ring communication network can be constructed using various autonomous reconfiguration methods.

[0034] For example, when a ring communication network is formed by AB-type laser terminals of four satellites, the minimum communication network can be formed into a ring or a butterfly shape according to the satellite array. Figure 2 Two topology diagrams for 4-star constellation communication provided in embodiments of the present invention are shown below. Figure 2 The image shows two network topologies: ring and butterfly.

[0035] Figure 3 This is a schematic diagram of the field of view of a 4-star laser terminal provided in an embodiment of the present invention; as shown. Figure 3 As shown, the field of view of the AB-type laser terminal is determined according to the four-satellite network configuration and link topology; the satellite IP address can be set to remain unchanged while the MAC address can be changed.

[0036] Figure 4 This is a schematic diagram of the field of view and blind zone of an AB-type laser terminal on a satellite provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the AB type laser terminal can be configured as follows: Laser terminal A receives wavelength a and transmits wavelength b; laser terminal B receives wavelength b and transmits wavelength a, and the two laser terminals are used in a matched manner.

[0037] Step S102: When there is an inter-satellite communication mission, the inter-satellite laser confirms the first target satellite and the second target satellite according to the inter-satellite route.

[0038] For example, after the local satellite receives a mission, the inter-satellite laser routing selects the target satellite for communication, thereby determining which type of laser terminal to use.

[0039] Step S103: Confirm the laser communication laser terminal A and laser terminal B that need to establish a link on the first target satellite and the second target satellite.

[0040] Step S104: Based on the platform information provided by the satellite platform, the laser communication terminals of the first target satellite and the second target satellite respectively calculate the position pointed to by the laser terminal at time t0, and perform target acquisition, tracking and communication.

[0041] In this embodiment, the platform information includes: the position and velocity of the local satellite, orbital information and attitude parameters, and the estimated position and velocity of the target satellite; wherein: the position and velocity of the target satellite are reported from the ground at intervals, and the platform calculates them in real time based on the reported information.

[0042] Compared with existing technologies, this embodiment offers greater flexibility in networking, employing either a minimum network or various autonomous reconfiguration methods, including multi-satellite clusters. It maintains a fixed routing table using a minimum network or enables a reconfigurable network within the field of view; the AB-type laser terminals utilize fixed bands, effectively ensuring link stability.

[0043] The present invention also provides a system for an AB-type laser terminal to autonomously build a ring communication network. The system for an AB-type laser terminal to autonomously build a ring communication network can be implemented by executing the process steps of the above-described method. That is, those skilled in the art can understand the method for an AB-type laser terminal to autonomously build a ring communication network as a preferred embodiment of the system for an AB-type laser terminal to autonomously build a ring communication network.

[0044] Those skilled in the art will understand that, besides implementing the system and its various devices, modules, and units provided by this invention in the form of purely computer-readable program code, the same functions can be achieved entirely through logical programming of the method steps, making the system and its various devices, modules, and units of this invention function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, the system and its various devices, modules, and units provided by this invention can be considered as a hardware component, and the devices, modules, and units included therein for implementing various functions can also be considered as structures within the hardware component; alternatively, the devices, modules, and units for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0045] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A method for autonomously constructing a ring communication network using an AB-type laser terminal, applied to a communication network composed of multiple satellites, wherein each satellite is equipped with an AB-type laser terminal, characterized in that... The method includes: A ring communication network was constructed based on AB-type laser terminals on each satellite; When inter-satellite communication missions are in place, inter-satellite lasers identify the first and second target satellites based on inter-satellite routes. Confirm the laser communication laser terminal A and laser terminal B that need to establish a link on the first target satellite and the second target satellite; Based on the platform information provided by the satellite platform, the laser communication terminals of the first target satellite and the second target satellite respectively calculate the position pointed to by the laser terminal at time t0, and perform target acquisition, tracking and communication.

2. The method for autonomously constructing a ring communication network using an AB-type laser terminal according to claim 1, characterized in that, The platform information includes: the position and velocity of the local satellite, its orbital information and attitude parameters, and the estimated position and velocity of the target satellite; wherein: The target satellite's position and velocity are predicted from ground-based data at intervals, and the platform calculates them in real time based on this prediction information.

3. The method for autonomously constructing a ring communication network using an AB-type laser terminal according to claim 1, characterized in that, The methods for building a ring communication network based on AB-type laser terminals on various satellites include: Construct a ring communication network by maintaining a fixed routing table using a minimum network approach; A ring communication network is constructed using various autonomous reconfiguration methods.

4. The method for autonomously constructing a ring communication network using an AB-type laser terminal according to any one of claims 1-3, characterized in that, When a ring communication network is formed by AB-type laser terminals of four satellites, the minimum communication network can be formed into a ring or butterfly shape depending on the satellite array.

5. The method for autonomously constructing a ring communication network using an AB-type laser terminal according to any one of claims 1-3, characterized in that, The AB type laser terminal is used in conjunction with the following settings: Laser terminal A receives wavelength a and transmits wavelength b; Laser terminal B receives wavelength b and transmits wavelength a.

6. The method for autonomously constructing a ring communication network by an AB-type laser terminal according to claim 4, characterized in that, The field of view of the AB-type laser terminal is determined based on the minimum network four-star network configuration and the link topology; The satellite IP address remains unchanged, but the MAC address can be changed.

7. The method for autonomously constructing a ring communication network using an AB-type laser terminal according to any one of claims 1-3, characterized in that, The inter-satellite laser identifies the first target satellite and the second target satellite based on the inter-satellite route, including: After the satellite receives the mission, the laser inter-satellite routing selects the first and second target satellites that need to communicate, and determines the type of laser terminal used by the first and second target satellites.

8. A system for autonomously constructing a ring communication network using an AB-type laser terminal, characterized in that, The system, applicable to a communication network consisting of multiple satellites, with each satellite equipped with an AB-type laser terminal, comprises: A communication network construction module is used to build a ring communication network based on AB-type laser terminals on various satellites; The target satellite confirmation module is used to confirm the first and second target satellites based on the inter-satellite route when there is an inter-satellite communication mission. The laser terminal confirmation module is used to confirm the laser communication laser terminal A and laser terminal B that need to establish a link on the first target satellite and the second target satellite. The tracking and communication module is used to calculate the position pointed to by the laser terminal at time t0 by the laser communication terminals of the first target satellite and the second target satellite respectively, based on the platform information provided by the satellite platform, and to perform target acquisition, tracking and communication.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for autonomously constructing a ring communication network by the AB-type laser terminal as described in any one of claims 1 to 7.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for autonomously constructing a ring communication network by the AB-type laser terminal as described in any one of claims 1 to 7.

Images