A method and system for laser link status awareness and rapid recovery based on satellite health management

Abstract

This invention relates to a method and system for laser link status perception and rapid recovery based on satellite health management. The method includes: monitoring the communication lock status and tracking lock status of the laser link, obtaining the bit error rate and lock indication; triggering tracking anomaly handling when tracking lock is detected to be lost; triggering communication anomaly handling when tracking lock is normal but communication lock is lost or the bit error rate continuously exceeds a threshold; and automatically executing the tracking anomaly handling and / or the communication anomaly handling through pre-configured instruction templates, dynamically adjusting parameters through instructions. The method proposed in this invention presents a two-level handling strategy for communication anomalies and tracking anomalies, and achieves link establishment task management and automated template scheduling for all terminals through satellite personnel, improving the convenience of link establishment between constellation laser communication terminals.

Description

Technical Field

[0001] This invention relates to the field of satellite laser communication technology, and in particular to a method and system for laser link status perception and rapid recovery based on satellite health management. Background Technology

[0002] Inter-satellite laser communication terminals are typically installed between two satellites, enabling high-speed optical communication between them via space-based light transmission. Laser communication uses lasers as the light source, transmitting data through small wavelets to achieve high-speed, long-distance information transmission. Laser communication features large transmission bandwidth, strong anti-interference capabilities, strong anti-interception capabilities, and high security. It is widely used in high-speed information transmission scenarios such as inter-constellation and inter-satellite-to-ground communication.

[0003] Inter-satellite and satellite-to-ground laser communication technologies have formed relatively mature technical systems and routes, and have completed on-orbit verification of interconnection and interoperability among multiple platforms and manufacturers. Laser communication technology can be applied to high-speed communication scenarios such as inter-satellite, satellite-to-ground, space-to-space, air-to-space, air-to-ground, and ground-to-ground communication. Currently, laser communication technology is being widely used in the construction of large constellation networks, such as Starlink and national internet constellations. Stable communication technology of laser terminals is the foundation for information transmission in inter-satellite networks.

[0004] With the development of laser communication technology, it has evolved through two-way laser communication achieved by guiding signal light with beacon light and direct signal light communication without beacon light guidance. The beacon light approach achieves wide divergence angle guidance during the initial link establishment phase, enabling rapid signal light acquisition. The beaconless approach uses signal light scanning coverage to achieve dual-terminal communication acquisition, offering advantages such as miniaturization and low cost.

[0005] For current laser communication solutions without beacon beams, the inter-satellite laser link establishment process is relatively complex. Both laser terminals need to agree on the roles of the scanning and staring ends according to the visible arc, the start and end times of scanning, and form a link establishment command sequence according to the agreement. The link establishment commands are generated in advance according to the corresponding times. The laser terminal involves functions such as optical head tracking and aiming control, optical amplifier optical power control, and communication modulation and demodulation. The number of commands involved is large and varies depending on the link establishment time and scenario.

[0006] If the connection between the two parties is lost due to factors such as changes in the space environment, platform disturbances, or changes in terminal temperature, the entire process of re-establishing the connection must be repeated. For inter-satellite network information transmission, this can cause information congestion, information transmission delays, and packet loss. Summary of the Invention

[0007] The objective of this invention is to provide a laser link status perception and rapid recovery method and system based on satellite health management. Through the method and / or system, the problems of information transmission delay and packet loss after link failure and re-establishment are solved. According to the satellite health management strategy, link establishment is automatically controlled according to the link failure level, thereby improving the convenience of link establishment between constellation inter-satellite laser communication terminals.

[0008] In a first aspect of the invention, the aforementioned task is solved by a laser link status awareness and rapid recovery method based on satellite health management, the method comprising the following steps:

[0009] Monitor the communication lock status and tracking lock status of the laser link, and obtain the bit error rate and lock indication;

[0010] When the tracking lock is detected to be lost, tracking anomaly handling is triggered;

[0011] When it is detected that the tracking is normal but the communication lock is lost or the bit error rate continuously exceeds the threshold, communication anomaly handling is triggered; and

[0012] The tracking anomaly handling and / or communication anomaly handling are automatically executed through pre-configured instruction templates, and parameters are dynamically adjusted through instructions;

[0013] The tracking anomaly handling is as follows: execute a no-light wait; if it does not recover after the wait, call a small-range recapture template scan; if the number of small-range recapture failures exceeds the threshold, call a large-range recapture template scan.

[0014] The communication anomaly handling method is as follows: execute the rescan frequency template and the communication reset template in sequence.

[0015] Furthermore, the communication lock status and tracking lock status of the satellite-monitored laser link also include:

[0016] Receive and store the link establishment schedule uploaded by the ground telemetry and control system, wherein the link establishment schedule includes the target satellite identifier, the on-board laser communication terminal identifier, the link establishment start time, and the link establishment end time;

[0017] Match a pre-set instruction template based on the chain-building scenario; and

[0018] The orbital data of the target star is extrapolated based on the target star identifier, and the orbital data is broadcast to the laser communication terminal via point-to-point communication.

[0019] Furthermore, tracking anomaly handling takes precedence over communication anomaly handling.

[0020] Furthermore, the instruction template includes a laser communication terminal identifier, a template identifier, an instruction sequence, and a time offset sequence.

[0021] Furthermore, the light-free waiting time is 10-30 seconds; and / or

[0022] The scanning angle of the small-range recapture template is 0-5 mrad; and / or

[0023] The scanning angle of the large-area recapture template is >5mrad.

[0024] Furthermore, if the bit error rate exceeds the threshold more than 30 times within 1 minute, a rescan frequency template is executed;

[0025] After three consecutive failures to rescan the frequency, the communication reset template is executed.

[0026] Furthermore, the laser link status awareness and rapid recovery method based on satellite health management also includes a security protection mechanism:

[0027] The number of communication resets is limited to 3 times per day;

[0028] After three failed communication reset attempts, the system enters safe mode and sends a feedback message to the ground control system. The above parameters are modified on-orbit via commands.

[0029] In a second aspect of the invention, the aforementioned task is further addressed by a system for implementing the described laser link status awareness and rapid recovery method based on satellite health management, the system comprising:

[0030] The status awareness module is configured to monitor the communication lock status and tracking lock status of the laser link, and obtain the bit error rate and lock indication by parsing the terminal telemetry data.

[0031] The tracking and aiming anomaly handling module is configured to trigger tracking and aiming anomaly handling when the tracking and aiming lock state is detected to be lost.

[0032] The communication anomaly handling module is configured to trigger communication anomaly handling when it detects that the tracking is normal but the communication lock state is lost or the bit error rate continuously exceeds the threshold; and

[0033] The template management and parameter adjustment module is configured to automatically execute the tracking anomaly handling and / or the communication anomaly handling through pre-configured instruction templates, and dynamically adjust parameters through instructions.

[0034] In a third aspect of the invention, an electronic device is also provided, the electronic device comprising:

[0035] A processor, configured to execute machine-readable instructions;

[0036] A graphics card with an artificial intelligence chip is configured to train a laser link status awareness and rapid recovery method based on spaceborne health management; and

[0037] A memory configured to store machine-readable instructions that, when executed by a processor and / or graphics card, perform the steps of the laser link status awareness and rapid recovery method based on space health management.

[0038] In a fourth aspect of the invention, a computer-readable storage medium is also provided having machine-readable instructions stored thereon, which, when executed by a processor, perform the steps of the laser link status sensing and rapid recovery method based on space health management.

[0039] The technical solution provided by this invention has the following advantages:

[0040] 1. The laser link status perception and rapid recovery method based on satellite health management proposed in this invention can automatically schedule according to different working modes of link establishment, and realize link establishment task management and automated template scheduling for all terminals through satellite service, thereby improving the convenience of link establishment between constellation laser communication terminals.

[0041] 2. The laser link status perception and rapid recovery method based on satellite health management proposed in this invention has a two-level handling method for communication anomalies, realizing a two-level handling strategy for increased bit error rate and communication link failure.

[0042] 3. The laser link status perception and rapid recovery method based on satellite health management proposed in this invention has a two-level handling method for tracking anomalies, realizing a two-level handling strategy for small-scale recapture and large-scale recapture of initial link loss, and supports flexible parameter configuration. Attached Figure Description

[0043] To further illustrate the above and other advantages and features of the various embodiments of the present invention, a more specific description of the various embodiments of the present invention will be presented with reference to the accompanying drawings. It is to be understood that these drawings depict only typical embodiments of the invention and are therefore not intended to limit its scope. In the drawings, identical or corresponding parts will be indicated by identical or similar reference numerals for clarity.

[0044] Figure 1 A flowchart illustrating a laser link status perception and rapid recovery method based on satellite health management according to an embodiment of the present invention is shown.

[0045] Figure 2 A schematic diagram of an instruction template format according to an embodiment of the present invention is shown;

[0046] Figure 3 A schematic diagram illustrating the allocation of instruction templates for different links according to an embodiment of the present invention is shown;

[0047] Figure 4 This illustration shows instruction templates for different links and a schematic diagram of link establishment scenario matching according to an embodiment of the present invention;

[0048] Figure 5 A schematic diagram illustrating the laser link tracking and aiming health status determination according to an embodiment of the present invention is shown.

[0049] Figure 6 A schematic diagram illustrating laser link communication health status determination according to an embodiment of the present invention is shown; and

[0050] Figure 7 A schematic diagram of a laser link status awareness and rapid recovery system based on satellite health management according to an embodiment of the present invention is shown. Detailed Implementation

[0051] In the following description, the invention is described with reference to various embodiments. However, those skilled in the art will recognize that the embodiments may be practiced without one or more specific details or with other alternatives and / or additional methods or components. In other instances, well-known structures or operations are not shown or described in detail so as not to obscure the inventive points of the invention. Similarly, for illustrative purposes, specific numbers and configurations are set forth to provide a comprehensive understanding of embodiments of the invention. However, the invention is not limited to these specific details.

[0052] In this specification, references to "an embodiment" or "this embodiment" mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in at least one embodiment of the invention. The phrase "in one embodiment" appearing throughout this specification does not necessarily refer to the same embodiment in all instances.

[0053] It should be noted that the embodiments of the present invention describe the method steps in a specific order; however, this is only for illustrating the specific embodiment and not for limiting the order of the steps. On the contrary, in different embodiments of the present invention, the order of the steps can be adjusted according to actual needs.

[0054] In this invention, the modules of the system according to the invention can be implemented using software, hardware, firmware, or a combination thereof. When a module is implemented using software, its function can be implemented through computer program flow. For example, the module can be implemented using code segments (such as code segments in languages ​​like C and C++) stored in a storage device (such as a hard disk, memory, etc.), wherein the corresponding function of the module can be implemented when the code segment is executed by a processor. When a module is implemented using hardware, its function can be implemented by setting a corresponding hardware structure. For example, the module's function can be implemented by hardware programming a programmable device such as a field-programmable gate array (FPGA), or by designing an application-specific integrated circuit (ASIC) that includes multiple transistors, resistors, capacitors, and other electronic devices. When a module is implemented using firmware, the module's function can be written into a read-only memory such as an EPROM or EEPROM in the form of program code, and the corresponding function of the module can be implemented when the program code is executed by a processor. In addition, some functions of the module may need to be implemented by separate hardware or by working in cooperation with the hardware. For example, the detection function is implemented by a corresponding sensor (such as a proximity sensor, accelerometer, gyroscope, etc.), the signal transmission function is implemented by a corresponding communication device (such as a Bluetooth device, infrared communication device, baseband communication device, Wi-Fi communication device, etc.), the output function is implemented by a corresponding output device (such as a display, speaker, etc.), and so on.

[0055] This invention addresses the complexity of establishing and reconnecting inter-satellite laser communication links in large constellations by improving the ease of link establishment and system availability through overall satellite design. The laser link status perception and rapid recovery method based on satellite health management provides a solution for sensing the link status of the local satellite after link establishment. It categorizes link failures into two levels: communication link failure and tracking link failure. Upon detecting a link failure, the satellite operator autonomously matches the previous target satellite and broadcasts time, orbit, and attitude information. It then automatically controls link establishment according to the onboard health management strategy and the required link failure level.

[0056] Figure 1 A flowchart illustrating a laser link status awareness and rapid recovery method based on satellite health management, according to an embodiment of the present invention, is shown below. Figure 1 This invention describes the laser link status sensing and rapid recovery method based on satellite health management proposed in this paper. In one embodiment of this invention, the laser link status sensing and rapid recovery method based on satellite health management can be executed by a computer. Figure 1 As shown, the laser link status awareness and rapid recovery method based on satellite health management includes the following steps:

[0057] First, monitor the communication lock-in status and tracking lock-in status of the laser link to obtain the bit error rate and lock-in indication.

[0058] In one embodiment of the present invention, prior to this step, the method may further include: receiving and storing a link establishment schedule uploaded by a ground-based telemetry and control system, wherein the link establishment schedule includes a target satellite identifier, a laser communication terminal identifier, a link establishment start time, and a link establishment end time; matching a preset instruction template according to the link establishment scenario; and extrapolating the orbital data of the corresponding target satellite based on the target satellite identifier, and broadcasting the orbital data to the laser communication terminal via point-to-point communication.

[0059] The ground-based telemetry and control system provides the basic information required for link establishment, such as the orbital information of the local satellite and the target satellite. The main elements of the link establishment schedule include the target satellite's code / identifier (ID), the onboard laser communication terminal's code / identifier (ID), and the start and end times of link establishment for each laser communication terminal. In one embodiment of the invention, for link establishment tasks involving multiple satellites within a constellation, the link establishment schedule may include information such as the satellites establishing the link, the start time period, and the end time period. Onboard satellite staff stores and recalls automated link establishment procedures, selecting different instruction templates according to different link establishment scenarios to achieve automated link establishment. In one embodiment of the invention, if it only involves satellite staff calling the procedure according to the instruction sequence, satellite staff can simultaneously manage dozens of individual onboard units. For link establishment scenarios within and outside the constellation's orbits, generally four terminals are configured onboard.

[0060] According to the connection establishment scenario, a preset instruction template is matched, wherein the instruction template may include a laser communication terminal identifier, a template identifier, an instruction sequence, and a time offset sequence. The satellite-based system allocates and configures templates according to the connection establishment scenario of different terminals, and uploads instruction templates. In one embodiment of the present invention, the connection establishment scenario includes multiple types, and different connection establishment scenarios are bound to different instruction templates. In one embodiment of the present invention, the instruction template supports both beacon light and beacon-less schemes. In one embodiment of the present invention, the beacon light scheme instruction template may include a beacon light activation instruction and scanning parameters; the beacon-less scheme instruction template may include a signal light power control instruction and scanning parameters.

[0061] In one embodiment of the present invention, an instruction template management function based on the satellite instruction sequence can be designed. The instruction template can include multiple instruction templates. The number of instructions supported by the terminal and the instruction length of each instruction template are determined according to the number of instructions established by the terminal link. Different terminal identifiers, the number of instruction templates, the template ID, and the time offset and instruction frames in the template are designed for different links allocated on the satellite. Figure 2 A schematic diagram of an instruction template format according to an embodiment of the present invention is shown. Figure 2As shown, each instruction template includes a laser communication terminal identifier (i.e., the terminal identifier in the figure), a template identifier (i.e., the template ID in the figure), an instruction sequence (instruction 1, instruction 2, ..., instruction n), a time offset sequence (time offset 1, time offset 2, ..., time offset n), and the number of template instructions, i.e., the value of n. Figure 2 As shown, the template content means: for a certain terminal, template number n contains a total of a instructions (a is the number of instructions in the template). When execution starts, for example, instruction 1 is executed at second 0, instruction 1 is executed after b seconds (b is the time offset 1), instruction 2 is executed after c seconds (c is the time offset 2), and so on, until the execution of the instructions is completed.

[0062] It should be noted that, Figure 2 The instructions in the command are pre-configured instructions for the terminal. After all instructions are executed, the connection establishment time will begin. These instructions are usually prepared in advance, and the response time is less than 1 second.

[0063] Different instruction templates are designed according to different terminal parameter configurations for different chain-building scenarios in constellations. The instruction templates are then allocated to support chain-building sequences for different scenarios. Figure 3 A schematic diagram illustrating the instruction template allocation for different links according to an embodiment of the present invention is shown. Figure 3 As shown, taking four links and 20 instruction templates as an example, different template configurations can be selected during a single link establishment. In one embodiment of the invention, a single laser communication terminal establishes a link with only one target satellite at a time, avoiding instruction conflicts; multi-terminal tasks are scheduled according to the link establishment start time. Satellite time synchronization accuracy is achieved through on-board BeiDou / GPS timing, ensuring consistency across all satellites; therefore, the time offset definition in the instruction template does not depend on satellite time synchronization accuracy.

[0064] Figure 4 This illustration shows instruction templates for different links and a schematic diagram of link establishment scenario matching according to an embodiment of the present invention. Figure 4 As shown, different command templates can be bound to different laser communication terminal connection scenarios. Automated template invocation is achieved through task identifiers in the connection establishment schedule or through command configuration. The number of connection establishment scenarios and templates can be expanded as needed. All ground command templates are stored on the satellite, and the ground configures template numbers according to different mission areas. Command template matching is configured on the satellite. When the satellite is executed, it reads the configured command template identifier (i.e., number). If command template 1 is configured, the satellite will automatically invoke command template 1. Different command templates correspond to different target satellites, and the terminal parameters differ, so they can be stored as different command templates without frequent changes.

[0065] The orbital data of the corresponding target star is extrapolated based on the target star identifier, and the orbital data is broadcast to the laser communication terminal via point-to-point communication. In one embodiment of the invention, a 422 bus point-to-point communication can be used to broadcast the orbital data to the laser communication terminal. In another embodiment of the invention, the satellite administrator reads the target star ID information, start time, and end time of each link in the link establishment schedule, and extrapolates the target star orbit according to the target star ID, thereby broadcasting the orbit to different links according to the target star ID. When registering the orbit, the satellite administrator will include which star is being registered, and will retrieve the corresponding star's orbit based on the target star for link establishment and broadcast it.

[0066] It's worth noting that under normal circumstances, the laser communication terminal replies to the satellite's telemetry status every second. It only needs to identify a few bytes in the telemetry data as the bit error rate. When the acquired data source code exceeds N consecutively M times, the bit error rate exceeding the threshold condition is met. Here, M and N can be settable parameters on the satellite.

[0067] Next, when the tracking lock is detected to be lost, tracking anomaly handling is triggered.

[0068] When the coarse / fine tracking lock indication of a certain link on the satellite is determined to be lost, such as Figure 5 As shown, the system first maintains a wait time of the set no-light waiting period (parameter adjustable) for the corresponding number of seconds to reduce link drops caused by jitter, etc. This action is usually implemented by the terminal. If the platform monitors the tracking lock indicator and it shows a lost lock, and the continuous lost lock time exceeds several times the no-light waiting period (parameter adjustable), the satellite operator autonomously configures the terminal template and executes the small-range recapture process for the lost link. This process is executed 3 times by default (parameter adjustable). If, after 3 times (parameter adjustable), the platform monitors the tracking lock indicator and it still shows a lost lock, the initial link establishment and capture process is invoked, and a large-range capture scan is performed. The satellite operator autonomously configures the terminal template and automatically invokes the link establishment template. In one embodiment of this invention, the no-light waiting period is 10-30 seconds; and / or the scanning angle of the small-range recapture template is 0-5 mrad; and / or the scanning angle of the large-range recapture template is >5 mrad. It is worth noting that instantaneous jitter is usually on the order of several seconds to tens of seconds and can be distinguished by judging the duration. The terminal has a certain degree of micro-vibration compensation capability. Introducing new micro-vibration data to assist in judgment may lead to misjudgment; the final result based on the communication status is sufficient for judgment. It is worth noting that the recovery success rate and recovery time depend on the on-orbit status. Generally, the success rate of two recaptures is over 90%, and the time is on the order of a few seconds to minutes.

[0069] Next, when it is detected that the tracking is normal but the communication lock state is lost or the bit error rate continuously exceeds the threshold, communication anomaly handling is triggered.

[0070] like Figure 6As shown, when the bit error rate exceeds a threshold (which is also adjustable) more than 30 times within a 1-minute (time parameter is adjustable), the rescan frequency template is executed to perform a communication rescan operation. It should be noted that this threshold is usually determined by the application and based on its impact on constellation operation; it is statically configured on the ground and can be modified via commands, requiring no autonomous learning. If normal communication is not restored after three handling conditions, the communication reset template is executed to reset communication. The reset operation is a soft operation and will not cause damage.

[0071] In one embodiment of the present invention, tracking anomaly handling takes precedence over communication anomaly handling.

[0072] Finally, the tracking anomaly handling and / or communication anomaly handling are automatically executed through pre-configured instruction templates, and parameters are dynamically adjusted through instructions.

[0073] In one embodiment of the present invention, the laser link status perception and rapid recovery method based on satellite health management also includes a security protection mechanism: limiting the number of communication resets to 3 times per day; after 3 failed communication resets, the system enters a safe mode and feeds back to the ground telemetry and control system.

[0074] The laser link status perception and rapid recovery method based on satellite health management proposed in this invention can automatically schedule according to different working modes of link establishment. It enables satellite staff to manage link establishment tasks and automatically schedule templates for all terminals, improving the convenience of link establishment between constellation laser communication terminals. It has a two-level handling method for communication anomalies, realizing two-level handling strategies for increased bit error rate and communication link loss. It also has a two-level handling method for tracking anomalies, realizing two-level handling strategies for small-scale recapture and large-scale recapture of initial link loss, and supports flexible parameter configuration.

[0075] In one embodiment of the present invention, the present invention also provides a system for the laser link status sensing and rapid recovery method based on satellite health management, such as... Figure 7 As shown, the system includes:

[0076] The status awareness module is configured to monitor the communication lock status and tracking lock status of the laser link, and obtain the bit error rate and lock indication by parsing the terminal telemetry data.

[0077] The tracking and aiming anomaly handling module is configured to trigger tracking and aiming anomaly handling when the tracking and aiming lock state is detected to be lost.

[0078] The communication anomaly handling module is configured to trigger communication anomaly handling when it detects that the tracking is normal but the communication lock state is lost or the bit error rate continuously exceeds the threshold; and

[0079] The template management and parameter adjustment module is configured to automatically execute the tracking anomaly handling and / or the communication anomaly handling through pre-configured instruction templates, and dynamically adjust parameters through instructions.

[0080] In one embodiment of the present invention, the laser link status perception and rapid recovery system based on satellite health management further includes a security protection module. The security protection module is configured to limit the number of communication resets to 3 times per day. After 3 failed communication resets, it enters a safe mode and feeds back to the ground telemetry and control system.

[0081] In one embodiment of the present invention, an electronic device is also provided, comprising: a processor, a graphics card with an artificial intelligence chip, and a memory. The memory is configured to store machine-readable instructions, the graphics card is configured to train the laser link status perception and rapid recovery method based on spaceborne health management, and the processor is configured to execute the machine-readable instructions. When the processor and / or the graphics card executes the machine-readable instructions, the following processing steps are implemented: monitoring the communication lock status and tracking lock status of the laser link, obtaining the bit error rate and lock indication; triggering tracking anomaly handling when tracking lock status is detected to be lost; triggering communication anomaly handling when tracking lock status is normal but communication lock status is lost or bit error rate continuously exceeds a threshold; and automatically executing the tracking anomaly handling and / or the communication anomaly handling through a pre-configured instruction template, dynamically adjusting parameters through instructions.

[0082] The graphics card used can preferably be a model with a GPU computing power higher than 5.0. Since the amount of data to be trained is large, providing a graphics card configuration can significantly improve the training speed.

[0083] The memory includes various media capable of storing machine-readable instructions, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0084] It is understood that, in addition to the memory and processor mentioned above, the computer system described above also includes other hardware and software components not listed in this specification. The specific components can be determined according to the model of the specific data processing equipment in different application scenarios, and will not be listed and described in detail in this specification.

[0085] In one embodiment of the present invention, a computer-readable storage medium is also provided, on which machine-readable instructions are stored. When executed by a processor, the machine-readable instructions perform the following processing steps: monitoring the communication lock state and tracking lock state of the laser link, and obtaining the bit error rate and lock indication; when the tracking lock state is detected to be out of lock, triggering tracking anomaly handling; when the tracking lock state is normal but the communication lock state is out of lock or the bit error rate continuously exceeds the threshold, triggering communication anomaly handling; and automatically executing the tracking anomaly handling and / or the communication anomaly handling through a pre-configured instruction template, and dynamically adjusting parameters through the instructions.

[0086] Although various embodiments of the present invention have been described above, it should be understood that they are presented by way of example only and not as limitations. It will be apparent to those skilled in the art that various combinations, modifications, and alterations can be made without departing from the spirit and scope of the invention. Therefore, the breadth and scope of the invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should be defined according to the technical solutions of the invention and their equivalents.

Claims

1. A method for laser link status perception and rapid recovery based on satellite health management, characterized in that, Includes the following steps: Monitor the communication lock status and tracking lock status of the laser link, and obtain the bit error rate and lock indication; When the tracking lock is detected to be lost, tracking anomaly handling is triggered; When it is detected that the tracking is normal but the communication lock state is lost or the bit error rate continuously exceeds the threshold, communication anomaly handling is triggered. as well as The tracking anomaly handling and / or communication anomaly handling are automatically executed through pre-configured instruction templates, and parameters are dynamically adjusted through instructions; The tracking anomaly handling is as follows: execute a no-light wait; if it does not recover after the wait, call a small-range recapture template scan; if the number of small-range recapture failures exceeds a threshold, call a large-range recapture template scan. The communication anomaly handling involves executing the rescan frequency template and the communication reset template in sequence.

2. The laser link status perception and rapid recovery method based on satellite health management according to claim 1, characterized in that, The communication lock status and tracking lock status of the laser link monitored by the satellite also include: Receive and store the link establishment schedule uploaded by the ground telemetry and control system, wherein the link establishment schedule includes the target satellite identifier, the on-board laser communication terminal identifier, the link establishment start time, and the link establishment end time; Match a pre-set instruction template based on the chain-building scenario; and The orbital data of the target star is extrapolated based on the target star identifier, and the orbital data is broadcast to the laser communication terminal via point-to-point communication.

3. The laser link status perception and rapid recovery method based on satellite health management according to claim 1, characterized in that, Handling tracking anomalies takes precedence over handling communication anomalies.

4. The laser link status perception and rapid recovery method based on satellite health management according to claim 1, characterized in that, The instruction template includes a laser communication terminal identifier, a template identifier, an instruction sequence, and a time offset sequence.

5. The laser link status perception and rapid recovery method based on satellite health management according to claim 1, characterized in that, The darkness waiting time is 10-30 seconds; and / or The scanning angle of the small-range recapture template is 0-5 mrad; and / or The scanning angle of the large-area recapture template is >5mrad.

6. The laser link status perception and rapid recovery method based on satellite health management according to claim 1, characterized in that, If the bit error rate exceeds the threshold more than 30 times within 1 minute, execute the frequency rescan template; After three consecutive failures to rescan the frequency, the communication reset template is executed.

7. The laser link status perception and rapid recovery method based on satellite health management according to claim 1, characterized in that, It also includes security protection mechanisms: The number of communication resets is limited to 3 times per day; After three failed attempts to restore communication, the system enters safe mode and sends a response to the ground control system.

8. A system for implementing the laser link status perception and rapid recovery method based on space health management as described in any one of claims 1-7, characterized in that, include: The status awareness module is configured to monitor the communication lock status and tracking lock status of the laser link, and obtain the bit error rate and lock indication. The tracking and aiming anomaly handling module is configured to trigger tracking and aiming anomaly handling when the tracking and aiming lock state is detected to be lost. The communication anomaly handling module is configured to trigger communication anomaly handling when it detects that the tracking is normal but the communication lock state is lost or the bit error rate continuously exceeds the threshold. as well as The template management and parameter adjustment module is configured to automatically execute the tracking anomaly handling and / or the communication anomaly handling through pre-configured instruction templates, and dynamically adjust parameters through instructions.

9. An electronic device, characterized in that, include: A processor, configured to execute machine-readable instructions; A graphics card with an artificial intelligence chip is configured to train a laser link status awareness and rapid recovery method based on spaceborne health management; and A memory configured to store machine-readable instructions that, when executed by a processor and / or a graphics card, perform the steps of the method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, It stores machine-readable instructions that, when executed by a processor, perform the steps of the method according to any one of claims 1-7.

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