Satellite load ground control terminal for low-orbit satellite communication

Abstract

The invention discloses a satellite load ground control terminal for low-orbit satellite communication, and relates to the technical field of satellite communication. In order to solve the problems that in the prior art, if any optical path in a double-optical-path system breaks down, a standby scheme cannot be quickly switched to or emergency repair measures cannot be taken, a fault detection and response mechanism is not comprehensive, and in quantum communication, entanglement state maintenance is very sensitive to the environment, and the service life is short. A dual-optical-path system needs additional measures to protect the quantum entanglement state, and the maintenance cost is high. Through cooperative work of the processor unit and the satellite communication unit, real-time fault monitoring of the dual-optical-path system is achieved, fault reasons can be intelligently recognized, corresponding repairing measures can be executed, when a satellite load breaks down or cannot work normally, the ground control terminal can take over a satellite in time to work and execute corresponding operation, and the working efficiency is improved. Therefore, the normal operation of the system can be quickly recovered, and the stability, reliability and safety of low-orbit satellite communication are improved.

Description

Technical Field

[0001] The present invention relates to the field of satellite communication technology, and in particular to a satellite payload ground control terminal for low-orbit satellite communications. Background Art

[0002] Low-orbit satellite communication systems have the advantages of wide coverage and low transmission delay. However, satellite payloads may fail or malfunction during operation, which seriously affects the reliability and stability of the entire communication system. For example, the Chinese patent with publication number: CN107872272A discloses a method and system for simultaneously pointing dual ground stations to dual ground stations through dual optical paths between satellites and ground, and a control terminal, which points the key communicator to the first ground station; calculates the azimuth and elevation angles of the two-dimensional turntable on the entangled transmitter in the payload equipment coordinate system when the entangled transmitter points to the second ground station; sets the two-dimensional turntable according to the azimuth and elevation angles of the two-dimensional turntable in the payload equipment coordinate system, so that the entangled transmitter is driven by the two-dimensional turntable to point to the second ground station. This patent achieves high-precision alignment between satellites and ground by pointing dual optical paths to two ground stations, so as to meet the needs of quantum satellites for effective quantum communication and ensure the effectiveness of quantum satellite in-orbit experiments.

[0003] Although the above patents can effectively improve the accuracy and efficiency of communication, they still have the following problems: In the prior art, if any optical path in the dual-optical path system fails, it is impossible to quickly switch to the backup plan or take emergency repair measures, the fault detection and response mechanism is not comprehensive, and in quantum communication, the maintenance of the entangled state is very sensitive to the environment. The dual-optical path system requires additional measures to protect the quantum entangled state, and the maintenance cost is high. Summary of the invention

[0004] The purpose of the present invention is to provide a satellite payload ground control terminal for low-orbit satellite communications, which can realize real-time fault monitoring of low-orbit satellites through the coordinated work of a processor unit and a satellite communication unit, can intelligently identify the cause of the fault, and execute corresponding repair measures, thereby improving the stability, reliability and safety of low-orbit satellite communications, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: The satellite payload ground control terminal for low-orbit satellite communications includes a processor unit, a memory unit and a satellite communication unit: The processor unit is used to receive and process downlink data from the low-orbit satellite, including the working status of the satellite payload, data transmission requests and real-time telemetry data, and at the same time, execute the control instructions stored in the memory unit to remotely control and monitor the satellite payload; A memory unit, used to store uplink data from low-orbit satellites and to be retrieved by the processor unit; The satellite communication unit is used to establish a data communication channel between the ground control terminal and the low-orbit satellite, and to perform uplink and downlink data transmission through the data communication channel.

[0006] Furthermore, the processor unit comprises: A data receiving module is used to obtain downlink data from a low-orbit satellite based on a satellite communication unit, parse the received downlink data, and confirm the integrity and correctness of the downlink data based on the parsing result; The data processing module is used to pre-process the received downlink data, identify the data type of the downlink data and classify it based on the data type, sort the various types of downlink data according to the task priority, and analyze and process the various types of downlink data based on the sorting sequence; The instruction execution module is used to retrieve and load the pre-stored control instructions from the memory unit, judge the validity of the control instructions according to the working status of the satellite payload and the real-time telemetry data analysis results, and execute the corresponding control instructions based on the judgment results; The monitoring and diagnosis module is used to monitor the response of the satellite payload in real time to obtain real-time monitoring data, obtain operation results and feedback information, compare the real-time monitoring data with the expected target, adjust the control command according to the comparison result and send it to the command execution module for re-execution; The monitoring and diagnosis module is also used to obtain fault information of the satellite payload, extract error data in abnormal working status and operation process, analyze the cause of the abnormality based on the fault diagnosis process, and execute corresponding fault handling solutions according to the fault diagnosis results.

[0007] Furthermore, the data receiving module is also used for: Based on the integrity and correctness of the downlink data, the threat risk index and vulnerability risk index of the ground control terminal are evaluated to identify potential security threats and operational risks; According to the working intensity of the target network layer of the ground control terminal and the threat risk index and vulnerability risk index of the ground control terminal, the security index of the ground control terminal is calculated based on a preset risk assessment model; The ground control terminals are classified into security levels according to their security indexes.

[0008] Furthermore, the monitoring and diagnosis module analyzes the abnormal cause based on the fault diagnosis process, specifically including: Monitor and determine the operating status characteristics of the satellite payload, identify abnormal modes compared with normal working conditions, generate the first control interface for fault diagnosis, and determine the specific time, location and impact range of the fault; Extracting the operating data before and after the fault occurs based on the fault location, obtaining the external environmental parameters at the time of the fault, loading the external environmental parameters at the time of the fault, the operating state characteristics, and the operating data before and after the fault occurs into the first control interface, and generating a second diagnostic interface; Construct fault diagnosis rules based on the historical operation data of satellite payloads, and form a third diagnosis interface based on the current fault characteristics according to the collected real-time telemetry data and historical operation data combined with the preset fault library, and perform feature matching analysis with the known fault modes in the preset fault library; The second diagnostic interface and the third diagnostic interface are combined and analyzed comprehensively to construct a fourth fault diagnostic interface, to analyze the fault data in depth, identify the fault type and locate the fault source; The fourth fault diagnosis interface is modeled into a three-dimensional fault scenario, a complete fault diagnosis scenario is generated based on the model results, the specific cause of the fault is determined according to the diagnosis and analysis results, and the fault type is distinguished; Assess the impact of the fault on the satellite payload function and determine whether the fault will affect the overall performance and safety of the satellite; According to the fault cause and impact assessment, formulate the corresponding fault handling plan, and execute the fault handling plan in the fault diagnosis scenario to verify the effect of fault handling and ensure that the satellite payload returns to normal working state.

[0009] Furthermore, the memory unit comprises: A data cache module is used to temporarily store uplink data received in real time and mark the control instructions called by the processor based on the uplink data type; Long-term storage module, used to store historical operation records and fault logs of low-orbit satellites for a long time, and regularly back up historical data to external storage devices; The configuration information storage module is used to store the configuration information of the satellite payload.

[0010] Furthermore, the memory unit further includes: Real-time monitoring of the first operating parameters of the data cache module; wherein the first operating parameters of the data cache module include data receiving rate, data cache duration, cache error rate and number of concurrent data processing; The data receiving operation coefficient is obtained by using the data receiving rate included in the first operation parameter of the data cache module, wherein the data receiving operation coefficient is obtained by the following formula: ; Wherein, Y represents the data receiving operation coefficient; n represents the number of unit time of the data cache module operation, and the unit time is 1s; B i represents the data receiving rate corresponding to the i-th unit time; B i+1represents the data receiving rate corresponding to the i+1th unit time; B e Indicates the theoretical maximum data receiving rate of the preset data cache module; B bi represents the standard deviation of the data receiving rate of the data cache module corresponding to the i-th unit time; B fmax Indicates the maximum fluctuation amplitude of the data receiving rate corresponding to n unit time; B max Indicates the actual maximum data receiving rate of the data cache module corresponding to n unit time; B b Represents the overall standard deviation of the data receiving rate of the data cache module corresponding to n unit time; comparing the data receiving operation coefficient with a preset receiving operation coefficient threshold; When the data receiving operation coefficient is lower than a preset receiving operation coefficient threshold, the data cache duration, cache error rate and number of concurrent data processing are retrieved to perform an abnormality determination on the operation status of the data cache module.

[0011] Further, when the data receiving operation coefficient is lower than a preset receiving operation coefficient threshold, the data cache duration, cache error rate and number of concurrent data processing are retrieved to perform abnormal determination on the operation state of the data cache module, including: Retrieving the data cache duration, cache error rate and number of concurrent data processing included in the first operating parameters of the data cache module; Obtaining a first abnormality determination coefficient using the data cache duration, cache error rate, and number of concurrently processed data; The first abnormality determination coefficient is obtained by the following formula: ; Among them, S 01 represents the first abnormality determination coefficient; n represents the number of unit times of the data cache module operation, and the unit time is 1s; P i represents the cache error rate corresponding to the i-th unit time; T pi represents the average data cache duration of the data stored in the data cache module corresponding to the i-th unit time; T c Indicates the preset maximum storage time allowed for the data cache module; Z i Indicates the number of concurrently processed data corresponding to the i-th unit time; m i T represents the number of data stored in the data cache module corresponding to the i-th unit time; m represents the number of data stored in the current data cache module; i represents the data cache duration corresponding to the i-th data; P ci Indicates the cache error rate corresponding to the unit time of the i-th data cache moment; comparing the first abnormality determination coefficient with a preset first abnormality determination coefficient threshold; When the first abnormality determination coefficient exceeds a preset first abnormality determination coefficient threshold, it is determined that the cache operation of the data cache module is abnormal, and an abnormality alarm is issued; When the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, a second operation parameter of the data cache module is used to perform a secondary abnormality determination on the cache operation of the data cache module.

[0012] Further, when the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, a second operation parameter of the data cache module is used to perform a secondary abnormality determination on the cache operation of the data cache module, including: When the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, the second operating parameter of the data cache module is retrieved, wherein the second operating parameter of the data cache module includes the cache data retrieval operation rate and the cache space occupancy rate of the data cache module; Obtaining a second abnormality determination coefficient using the cache data retrieval operation rate and the cache space occupancy rate of the data cache module; The second abnormality determination coefficient is obtained by the following formula: ; Among them, S 02 represents the second abnormality determination coefficient; n represents the number of unit times of the data cache module operation, and the unit time is 1s; P i represents the cache error rate corresponding to the i-th unit time; P yi represents the cache data retrieval operation rate corresponding to the i-th unit time; P zi represents the cache space occupancy rate of the data cache module corresponding to the i-th unit time; P b represents the standard deviation of the cache error rate corresponding to n units of time; P yb Indicates the standard deviation of the cache data retrieval operation rate corresponding to n units of time; comparing the second abnormality determination coefficient with a preset secondary abnormality determination coefficient threshold; When the second abnormality determination coefficient exceeds the preset secondary abnormality determination coefficient threshold, it is determined that the cache operation of the data cache module is abnormal, and an abnormality alarm is issued.

[0013] Furthermore, the satellite communication unit comprises: An uplink communication module is used to encode and encrypt the control instructions sent by the ground control terminal based on the judgment result of the instruction execution module, and transmit them uplink to the low-orbit satellite through the data communication channel; Downlink communication module: receives downlink data sent back by low-orbit satellites, decodes and corrects errors in the received raw data, and transmits the decoded downlink data to the processor unit for analysis and processing; The redundant communication module is used to monitor the operation quality of the data communication channel in real time, wherein the data communication channel includes a main communication link and multiple redundant communication links. When the operation quality of the main communication link is lower than the preset quality standard, the redundant communication link is switched.

[0014] Furthermore, the redundant communication module includes: The parameter monitoring submodule is used to monitor the link operation parameters of each communication node in the main communication link in real time, evaluate the link operation quality through the operation parameters, compare the evaluation results with the preset communication quality threshold, and trigger the corresponding fault handling mechanism based on the comparison results; The quality inspection submodule is used to switch to each redundant communication link in turn based on the fault handling mechanism within the detection cycle, and inspect the link operation parameters of each redundant communication link; The link selection submodule is used to sort the redundant communication links according to the link operation quality based on the inspection result, and select the redundant communication link with the highest link operation quality for automatic switching.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Through the coordinated work of the processor unit and the satellite communication unit, real-time fault monitoring of low-orbit satellites is achieved. If the main communication link fails, the fault detection mechanism is automatically triggered, the fault type and impact range are quickly identified, and the redundant communication link is switched to reduce the impact of the fault on the system operation and improve the continuity and stability of communication. Through real-time analysis and comparison with historical fault data, the cause of the fault can be intelligently identified and corresponding repair measures can be executed. When the satellite payload fails or cannot work normally, the terminal can take over the satellite work in time and perform corresponding operations, thereby ensuring that the system quickly resumes normal operation and improving the stability, reliability and security of low-orbit satellite communications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a module diagram of a satellite payload ground control terminal for low-orbit satellite communications according to the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In order to solve the technical problems in the prior art that if any optical path in the dual optical path system fails, it is impossible to quickly switch to the backup solution or take emergency repair measures, and the fault detection and response mechanism is not comprehensive, please refer to Figure 1 , this embodiment provides the following technical solutions: The satellite payload ground control terminal for low-orbit satellite communications includes a processor unit, a memory unit and a satellite communication unit: The processor unit is used to receive and process downlink data from low-orbit satellites, including the working status of satellite payloads, data transmission requests and real-time telemetry data. At the same time, it executes the control instructions stored in the memory unit to remotely control and monitor the satellite payload, including parameter adjustment, mode switching, fault troubleshooting, etc. The memory unit is used to store the uplink data of the low-orbit satellite, including the working parameters of the satellite payload, fault handling procedures, backup data, etc., and is retrieved by the processor unit to ensure that the ground control terminal correctly responds to the fault of the satellite payload and ensure the integrity and traceability of the data, including: The data cache module is used to temporarily store the uplink data received in real time and mark the control instructions called by the processor based on the uplink data type to ensure the continuity of data transmission; Long-term storage module, used to store historical operation records and fault logs of low-orbit satellites for a long time, and regularly back up historical data to external storage devices; Configuration information storage module, used to store satellite payload configuration information, including system parameters, working mode, software version and other key data, to ensure that when a satellite fails, the processor unit can promptly take over the satellite work and quickly restore normal operation; The satellite communication unit is used to establish a data communication channel between the ground control terminal and the low-orbit satellite, and to transmit uplink data (such as control instructions, parameter settings, etc.) and downlink data (such as the working status of the satellite payload, monitoring data, etc.) through the data communication channel.

[0019] In this embodiment, real-time fault monitoring of low-orbit satellites is achieved through the collaborative work of the processor unit and the satellite communication unit. If a main communication link fails, the fault detection mechanism is automatically triggered, the fault type and impact range are quickly identified, and the redundant communication link is switched, thereby reducing the impact of the fault on the system operation and improving the continuity and stability of communication. Through real-time analysis and comparison with historical fault data, the cause of the fault can be intelligently identified and corresponding repair measures can be executed. When the satellite payload fails or cannot work normally, the terminal can promptly take over the satellite work and perform corresponding operations, thereby ensuring that the system quickly resumes normal operation and improving the stability, reliability and security of low-orbit satellite communications.

[0020] In this embodiment, the processor unit includes: A data receiving module is used to obtain downlink data from a low-orbit satellite based on a satellite communication unit, parse the received downlink data, and confirm the integrity and correctness of the downlink data based on the parsing result; A data processing module is used to pre-process the received downlink data, identify the data type of the downlink data and classify it based on the data type, sort the various types of downlink data according to the task priority, for example, emergency fault information is processed first, and analyze and process the various types of downlink data based on the sorting sequence; In this embodiment, the working status information of the satellite payload is analyzed to evaluate the operational health of the satellite payload, process data transmission requests, determine the priority and required resources for data transmission, and parse real-time telemetry data for real-time monitoring of the performance parameters of the satellite payload. If it is instruction data, the processor will parse it and issue it to the instruction execution module; if it is monitoring data, it will be sent to the monitoring diagnosis module for status monitoring and fault diagnosis; The instruction execution module is used to retrieve and load the pre-stored control instructions from the memory unit, judge the validity of the control instructions according to the working status of the satellite payload and the real-time telemetry data analysis results, and execute the corresponding control instructions based on the judgment results to realize the remote operation of the satellite payload; The monitoring and diagnosis module is used to monitor the response of the satellite payload in real time to obtain real-time monitoring data, obtain operation results and feedback information, compare the real-time monitoring data with the expected target, verify the effectiveness of the control command, adjust the control command according to the comparison result and send it to the command execution module for re-execution to ensure that the satellite payload operates stably according to the predetermined target; The monitoring and diagnosis module is also used to obtain fault information of the satellite payload, extract abnormal working status and error data during operation, analyze the cause of the abnormality based on the fault diagnosis process, and execute corresponding fault handling solutions according to the fault diagnosis results, including enabling backup systems, adjusting operating strategies or sending maintenance instructions.

[0021] In this embodiment, the processor unit intelligently classifies and prioritizes the downlink data to ensure that emergency fault information is processed first. The collaborative work of the data processing module and the monitoring and diagnosis module enhances the timeliness and accuracy of fault handling and ensures the stability of satellite payload operation. When a fault occurs, the monitoring and diagnosis module can quickly extract abnormal data and analyze the cause of the fault based on the preset fault diagnosis process, and automatically execute the fault handling plan, thereby ensuring the stability and reliability of the low-orbit satellite communication system. The multi-level management and fault response strategies significantly improve the response speed and safety of the system, and provide strong technical support for the low-orbit satellite payload ground control terminal.

[0022] In this embodiment, the data receiving module is further used for: Based on the integrity and correctness of the downlink data, the threat risk index and vulnerability risk index of the ground control terminal are evaluated to identify potential security threats and operational risks; According to the working intensity of the target network layer of the ground control terminal and the threat risk index and vulnerability risk index of the ground control terminal, the security index of the ground control terminal is calculated based on a preset risk assessment model; The ground control terminals are classified into security levels according to their security indexes.

[0023] In this embodiment, by integrating threat and risk assessment and security index analysis, it is ensured that the ground control terminal can intelligently identify, classify and optimize the processing of data sources with different security levels in a complex operating environment, thereby improving the security and transmission efficiency of the low-orbit satellite communication system.

[0024] In this embodiment, the monitoring and diagnosis module analyzes the abnormal cause based on the fault diagnosis process, specifically including: Monitor and determine the operating status characteristics of satellite payloads, including key parameters such as temperature, voltage, current, vibration, etc., identify abnormal modes compared with normal working conditions, generate the first control interface for fault diagnosis, and determine the specific time, location and impact range of the fault; Extracting the operating data before and after the fault occurs based on the fault location, including telemetry data, event logs, system status, etc., obtaining the external environmental parameters at the time of the fault, such as space weather conditions, satellite orbital positions, etc., loading the external environmental parameters at the time of the fault, operating status characteristics, and operating data before and after the fault occurs into the first control interface, and generating a second diagnostic interface; Construct fault diagnosis rules based on the historical operation data of satellite payloads, and form a third diagnosis interface based on the current fault characteristics according to the collected real-time telemetry data and historical operation data combined with the preset fault library, and perform feature matching analysis with the known fault modes in the preset fault library; The second diagnostic interface and the third diagnostic interface are combined and analyzed comprehensively to construct a fourth fault diagnostic interface, to analyze the fault data in depth, identify the fault type and locate the fault source; The fourth fault diagnosis interface is modeled into a three-dimensional fault scenario, and a complete fault diagnosis scenario is generated based on the model results. The specific cause of the fault is determined according to the diagnosis and analysis results, and the fault type is distinguished, and whether it is caused by hardware fault, software fault or external environmental factors; Assess the impact of the fault on the satellite payload function and determine whether the fault will affect the overall performance and safety of the satellite; Based on the fault cause and impact assessment, formulate corresponding fault handling plans, including restarting the system, switching to the backup module, adjusting operating parameters, executing maintenance procedures, etc., and execute the fault handling plan in the fault diagnosis scenario to verify the effect of the fault handling and ensure that the satellite payload returns to normal working state.

[0025] In this embodiment, by superimposing operating parameters and environmental data and performing three-dimensional modeling, the cause of the fault can be deeply analyzed and the impact can be evaluated, thereby enhancing the accuracy of fault diagnosis. Comparison using historical operating data and a preset fault library helps to quickly locate the source of the fault and provide targeted processing solutions. After the fault processing solution is executed, real-time monitoring and effect verification are performed to ensure the effectiveness of fault processing and the reliability of system recovery. Through multi-dimensional data fusion and hierarchical diagnosis, a systematic and reasonable fault diagnosis and processing process is provided, which can effectively ensure the stable operation of low-orbit satellite payloads.

[0026] Specifically, the memory unit further includes: Real-time monitoring of the first operating parameters of the data cache module; wherein the first operating parameters of the data cache module include data receiving rate, data cache duration, cache error rate and number of concurrent data processing; The data receiving operation coefficient is obtained by using the data receiving rate included in the first operation parameter of the data cache module, wherein the data receiving operation coefficient is obtained by the following formula: ; Wherein, Y represents the data receiving operation coefficient; n represents the number of unit time of the data cache module operation, and the unit time is 1s; B i represents the data receiving rate corresponding to the i-th unit time; B i+1 represents the data receiving rate corresponding to the i+1th unit time; B e Indicates the theoretical maximum data receiving rate of the preset data cache module; B bi represents the standard deviation of the data receiving rate of the data cache module corresponding to the i-th unit time; B fmaxIndicates the maximum fluctuation amplitude of the data receiving rate corresponding to n unit time; B max Indicates the actual maximum data receiving rate of the data cache module corresponding to n unit time; B b Represents the overall standard deviation of the data receiving rate of the data cache module corresponding to n unit time; comparing the data receiving operation coefficient with a preset receiving operation coefficient threshold; When the data receiving operation coefficient is lower than a preset receiving operation coefficient threshold, the data cache duration, cache error rate and number of concurrent data processing are retrieved to perform an abnormality determination on the operation status of the data cache module.

[0027] The technical effect of the above technical solution is: by real-time monitoring of the first operating parameters of the data cache module (data receiving rate, data cache duration, cache error rate and number of concurrent data processing), any abnormal changes in the module's operating status can be quickly captured. This real-time monitoring ensures high responsiveness and stability of the system. Using a complex data reception operating coefficient formula (involving multiple variables, such as data reception rate per unit time, theoretical maximum data reception rate, standard deviation of data reception rate, maximum fluctuation value, actual maximum data reception rate and overall standard deviation), the performance of the data cache module in data reception can be comprehensively and accurately evaluated. This evaluation not only considers the absolute value of the reception rate, but also the stability, volatility and overall performance of the rate, thereby providing a deeper insight. When the data reception operating coefficient is lower than the preset reception operating coefficient threshold, the system can automatically retrieve other operating parameters (data cache duration, cache error rate and number of concurrent data processing) for further abnormality determination. This mechanism helps to accurately identify the specific causes of performance degradation, so that appropriate corrective measures can be taken more quickly. Through real-time monitoring and abnormality determination, system administrators can promptly discover and resolve potential problems in the data cache module. This helps avoid performance bottlenecks and failures, thereby improving the overall reliability and efficiency of the system. The formulas and thresholds in this technical solution can be adjusted and optimized according to actual needs. This means that as the system develops and the amount of data increases, the monitoring and judgment criteria can be flexibly adjusted to adapt to new performance requirements.

[0028] In summary, the technical effects of this technical solution in terms of performance indicators are mainly reflected in real-time, accuracy, abnormality determination capability, convenience of system optimization and troubleshooting, as well as scalability and flexibility. These effects together ensure the efficient, stable and reliable operation of the data cache module.

[0029] Specifically, when the data receiving operation coefficient is lower than a preset receiving operation coefficient threshold, the data cache duration, cache error rate and number of concurrent data processing are retrieved to perform abnormal determination on the operation state of the data cache module, including: Retrieving the data cache duration, cache error rate and number of concurrent data processing included in the first operating parameters of the data cache module; Obtaining a first abnormality determination coefficient using the data cache duration, cache error rate, and number of concurrently processed data; The first abnormality determination coefficient is obtained by the following formula: ; Among them, S 01 represents the first abnormality determination coefficient; n represents the number of unit times of the data cache module operation, and the unit time is 1s; P i represents the cache error rate corresponding to the i-th unit time; T pi represents the average data cache duration of the data stored in the data cache module corresponding to the i-th unit time; T c Indicates the preset maximum storage time allowed for the data cache module; Z i Indicates the number of concurrently processed data corresponding to the i-th unit time; m i T represents the number of data stored in the data cache module corresponding to the i-th unit time; m represents the number of data stored in the current data cache module; i represents the data cache duration corresponding to the i-th data; P ci Indicates the cache error rate corresponding to the unit time of the i-th data cache moment; comparing the first abnormality determination coefficient with a preset first abnormality determination coefficient threshold; When the first abnormality determination coefficient exceeds a preset first abnormality determination coefficient threshold, it is determined that the cache operation of the data cache module is abnormal, and an abnormality alarm is issued; When the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, a second operation parameter of the data cache module is used to perform a secondary abnormality determination on the cache operation of the data cache module.

[0030] The technical effect of the above technical solution is: the technical solution not only monitors the data receiving operation coefficient, but also further combines multiple dimensions such as data cache duration, cache error rate and number of concurrent data processing, and performs comprehensive abnormality determination by calculating the first abnormality determination coefficient. This multi-dimensional analysis method can more comprehensively evaluate the operating status of the data cache module and improve the accuracy and reliability of abnormality determination.

[0031] By setting the first abnormality determination coefficient threshold and the second abnormality determination coefficient threshold, the technical solution realizes the refined classification management of abnormal situations. When the first abnormality determination coefficient exceeds the first threshold, it is directly determined as abnormal and an alarm is issued; when the coefficient is between the first and second thresholds, a secondary abnormality determination is performed. This hierarchical management strategy helps to more effectively deal with abnormal situations of different degrees and reduce false alarms and missed alarms. The technical solution performs real-time monitoring and abnormality determination in a unit time (such as 1 second) cycle, ensuring that the system can respond quickly to any potential abnormal situation. This real-time performance is crucial to maintaining the stability and reliability of the data cache module and helps to promptly discover and resolve potential performance bottlenecks or failures. The parameters and thresholds in the formula can be adjusted and optimized according to actual conditions to adapt to different application scenarios and performance requirements. This scalability and flexibility enable the technical solution to better adapt to future developments and changes. Through real-time monitoring and abnormality determination, system administrators can promptly discover and resolve potential problems in the data cache module, thereby avoiding performance degradation or failures. In addition, the technical solution can also provide valuable reference information for system optimization, helping administrators to better configure and adjust the operating parameters of the data cache module. Comprehensive anomaly determination and timely alarm mechanism help reduce system downtime and service interruption caused by data cache module anomalies. This helps improve the overall stability and availability of the system, ensuring business continuity and user satisfaction.

[0032] In summary, the technical effects of this technical solution in terms of performance indicators are mainly reflected in comprehensive anomaly determination capabilities, refined anomaly management, real-time and response speed, scalability and flexibility, fault prevention and optimization, and improved system stability. These effects together provide a strong guarantee for the efficient, stable and reliable operation of the data cache module.

[0033] Specifically, when the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, a second operation parameter of the data cache module is used to perform a secondary abnormality determination on the cache operation of the data cache module, including: When the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, the second operating parameter of the data cache module is retrieved, wherein the second operating parameter of the data cache module includes the cache data retrieval operation rate and the cache space occupancy rate of the data cache module; Obtaining a second abnormality determination coefficient using the cache data retrieval operation rate and the cache space occupancy rate of the data cache module; The second abnormality determination coefficient is obtained by the following formula: ; Among them, S 02 represents the second abnormality determination coefficient; n represents the number of unit times of the data cache module operation, and the unit time is 1s; P i represents the cache error rate corresponding to the i-th unit time; P yi represents the cache data retrieval operation rate corresponding to the i-th unit time; P zi represents the cache space occupancy rate of the data cache module corresponding to the i-th unit time; P b represents the standard deviation of the cache error rate corresponding to n units of time; P yb Indicates the standard deviation of the cache data retrieval operation rate corresponding to n units of time; comparing the second abnormality determination coefficient with a preset secondary abnormality determination coefficient threshold; When the second abnormality determination coefficient exceeds the preset secondary abnormality determination coefficient threshold, it is determined that the cache operation of the data cache module is abnormal, and an abnormality alarm is issued.

[0034] The technical effect of the above technical solution is: by introducing the second operating parameter (cached data retrieval operation rate and cache space occupancy rate of the data cache module) and performing secondary abnormality determination, the technical solution significantly enhances the ability of data cache module abnormality detection. This helps to discover potential problems that may not be captured in the first abnormality determination stage, thereby improving the overall stability and reliability of the system. The technical solution not only focuses on the error rate, duration and number of concurrent processing of data reception and caching, but also further considers the retrieval rate of cache data and the occupancy of cache space. This multi-dimensional performance monitoring method can more comprehensively reflect the operating status of the data cache module and provide system administrators with richer information to evaluate and optimize system performance. By setting the first abnormality determination coefficient threshold and the second abnormality determination coefficient threshold (and possible secondary abnormality determination coefficient threshold), the technical solution implements a flexible abnormality determination strategy. This strategy can hierarchically handle abnormalities according to different situations, avoiding interference caused by excessive alarms and ensuring timely discovery and processing of important abnormalities.

[0035] This technical solution performs real-time monitoring and abnormality judgment in a unit time (such as 1 second) cycle, ensuring that the system can provide real-time feedback on the performance status of the data cache module. This real-time performance feedback mechanism helps system administrators take timely measures to deal with potential performance problems, thereby maintaining the stability and efficiency of the system. By monitoring the cache data retrieval operation rate and cache space occupancy rate, this technical solution helps system administrators to allocate and utilize cache resources more reasonably. This can not only improve the cache hit rate, but also reduce unnecessary waste of cache space, thereby optimizing the overall performance of the system. Combining the results of the first abnormality judgment and the second abnormality judgment, the technical solution can more accurately identify abnormal situations in the data cache module. This comprehensive judgment method helps to improve the robustness of the system, enabling it to better cope with various complex operating environments and abnormal situations.

[0036] In summary, the technical effects of this technical solution in terms of performance indicators are mainly reflected in enhanced anomaly detection capabilities, multi-dimensional performance monitoring, flexible anomaly determination strategies, real-time performance feedback, optimized resource utilization, and improved system robustness. These effects together provide a strong guarantee for the efficient, stable and reliable operation of the data cache module.

[0037] In this embodiment, the satellite communication unit includes: The uplink communication module is used to encode and encrypt the control instructions sent by the ground control terminal based on the judgment results of the instruction execution module, and transmit them uplink to the low-orbit satellite through the data communication channel to ensure that the instructions are accurately conveyed; Downlink communication module: receives downlink data sent back by low-orbit satellites, decodes and corrects errors in the received raw data, and transmits the decoded downlink data to the processor unit for analysis and processing; The redundant communication module is used to monitor the operation quality of the data communication channel in real time. The data communication channel includes a main communication link and multiple redundant communication links. When the operation quality of the main communication link is lower than the preset quality standard, the redundant communication link is switched to ensure the stability and reliability of communication, including: The parameter monitoring submodule is used to monitor the link operation parameters of each communication node in the main communication link in real time, such as signal strength, delay, packet loss rate, etc., and evaluate the link operation quality through the operation parameters to ensure the data integrity and stability during the transmission process. The evaluation results are compared with the preset communication quality threshold, and the corresponding fault handling mechanism is triggered based on the comparison results; The quality inspection submodule is used to switch to each redundant communication link in turn based on the fault handling mechanism within the detection cycle, and to inspect the link operation parameters of each redundant communication link to ensure the continuity of data transmission; The link selection submodule is used to sort the redundant communication links according to the link operation quality based on the inspection results, select the redundant communication link with the highest link operation quality for automatic switching, and ensure that the communication link between the data receiving terminal and the high-risk control terminal is always in the best operating state.

[0038] In this embodiment, the uplink communication module ensures the accurate transmission and security of instructions, the downlink communication module ensures the integrity and correctness of the data, and then transmits it to the processor unit for analysis and processing, while the redundant communication module monitors the operating quality of the data communication channel in real time. When the operating quality of the main communication link decreases, it automatically switches to the optimal redundant communication link to ensure the stability and reliability of communication, thereby enhancing the reliability of the system, improving robustness, optimizing user experience, and reducing maintenance costs.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A satellite payload ground control terminal for low-orbit satellite communications, characterized in that: Includes processor unit, memory unit and satellite communication unit: The processor unit is used to receive and process downlink data from the low-orbit satellite, including the working status of the satellite payload, data transmission requests and real-time telemetry data, and at the same time, execute the control instructions stored in the memory unit to remotely control and monitor the satellite payload; A memory unit, used to store uplink data from low-orbit satellites and to be retrieved by the processor unit; The satellite communication unit is used to establish a data communication channel between the ground control terminal and the low-orbit satellite, and to perform uplink and downlink data transmission through the data communication channel.

2. The satellite payload ground control terminal for low-orbit satellite communications according to claim 1, characterized in that: Processor unit, comprising: A data receiving module is used to obtain downlink data from a low-orbit satellite based on a satellite communication unit, parse the received downlink data, and confirm the integrity and correctness of the downlink data based on the parsing result; The data processing module is used to pre-process the received downlink data, identify the data type of the downlink data and classify it based on the data type, sort the various types of downlink data according to the task priority, and analyze and process the various types of downlink data based on the sorting sequence; The instruction execution module is used to retrieve and load the pre-stored control instructions from the memory unit, judge the validity of the control instructions according to the working status of the satellite payload and the real-time telemetry data analysis results, and execute the corresponding control instructions based on the judgment results; The monitoring and diagnosis module is used to monitor the response of the satellite payload in real time to obtain real-time monitoring data, obtain operation results and feedback information, compare the real-time monitoring data with the expected target, adjust the control command according to the comparison result and send it to the command execution module for re-execution; The monitoring and diagnosis module is also used to obtain fault information of the satellite payload, extract error data in abnormal working status and operation process, analyze the cause of the abnormality based on the fault diagnosis process, and execute corresponding fault handling solutions according to the fault diagnosis results.

3. The satellite payload ground control terminal for low-orbit satellite communications according to claim 2, characterized in that: The data receiving module is further used for: Based on the integrity and correctness of the downlink data, the threat risk index and vulnerability risk index of the ground control terminal are evaluated to identify potential security threats and operational risks; According to the working intensity of the target network layer of the ground control terminal and the threat risk index and vulnerability risk index of the ground control terminal, the security index of the ground control terminal is calculated based on a preset risk assessment model; The ground control terminals are classified into security levels according to their security indexes.

4. The satellite payload ground control terminal for low-orbit satellite communications as claimed in claim 3, characterized in that: The monitoring and diagnosis module analyzes the abnormal cause based on the fault diagnosis process, specifically including: Monitor and determine the operating status characteristics of the satellite payload, identify abnormal modes compared with normal working conditions, generate the first control interface for fault diagnosis, and determine the specific time, location and impact range of the fault; Extracting the operating data before and after the fault occurs based on the fault location, obtaining the external environmental parameters at the time of the fault, loading the external environmental parameters at the time of the fault, the operating state characteristics, and the operating data before and after the fault occurs into the first control interface, and generating a second diagnostic interface; Construct fault diagnosis rules based on the historical operation data of satellite payloads, and form a third diagnosis interface based on the current fault characteristics according to the collected real-time telemetry data and historical operation data combined with the preset fault library, and perform feature matching analysis with the known fault modes in the preset fault library; The second diagnostic interface and the third diagnostic interface are combined and analyzed comprehensively to construct a fourth fault diagnostic interface, to analyze the fault data in depth, identify the fault type and locate the fault source; The fourth fault diagnosis interface is modeled into a three-dimensional fault scenario, a complete fault diagnosis scenario is generated based on the model results, the specific cause of the fault is determined according to the diagnosis and analysis results, and the fault type is distinguished; Assess the impact of the fault on the satellite payload function and determine whether the fault will affect the overall performance and safety of the satellite; According to the fault cause and impact assessment, formulate the corresponding fault handling plan, and execute the fault handling plan in the fault diagnosis scenario to verify the effect of fault handling and ensure that the satellite payload returns to normal working state.

5. The satellite payload ground control terminal for low-orbit satellite communications as claimed in claim 4, characterized in that: A memory unit comprising: A data cache module is used to temporarily store uplink data received in real time and mark the control instructions called by the processor based on the uplink data type; Long-term storage module, used to store historical operation records and fault logs of low-orbit satellites for a long time, and regularly back up historical data to external storage devices; The configuration information storage module is used to store the configuration information of the satellite payload.

6. The satellite payload ground control terminal for low-orbit satellite communications according to claim 5, characterized in that: The memory unit further comprises: Real-time monitoring of the first operating parameters of the data cache module; wherein the first operating parameters of the data cache module include data receiving rate, data cache duration, cache error rate and number of concurrent data processing; The data receiving operation coefficient is obtained by using the data receiving rate included in the first operation parameter of the data cache module, wherein the data receiving operation coefficient is obtained by the following formula: ； Wherein, Y represents the data receiving operation coefficient; n represents the number of unit time of the data cache module operation, and the unit time is 1s; B i represents the data receiving rate corresponding to the i-th unit time; B i+1 represents the data receiving rate corresponding to the i+1th unit time; B e Indicates the theoretical maximum data receiving rate of the preset data cache module; B bi represents the standard deviation of the data receiving rate of the data cache module corresponding to the i-th unit time; B fmax Indicates the maximum fluctuation amplitude of the data receiving rate corresponding to n unit time; B max Indicates the actual maximum data receiving rate of the data cache module corresponding to n unit time; B b Represents the overall standard deviation of the data receiving rate of the data cache module corresponding to n unit time; comparing the data receiving operation coefficient with a preset receiving operation coefficient threshold; When the data receiving operation coefficient is lower than a preset receiving operation coefficient threshold, the data cache duration, cache error rate and number of concurrent data processing are retrieved to perform an abnormality determination on the operation status of the data cache module.

7. The satellite payload ground control terminal for low-orbit satellite communications according to claim 6, characterized in that: When the data receiving operation coefficient is lower than the preset receiving operation coefficient threshold, the data cache duration, cache error rate and number of concurrent data processing are retrieved to determine the abnormality of the operation state of the data cache module, including: Retrieving the data cache duration, cache error rate and number of concurrent data processing included in the first operating parameters of the data cache module; Obtaining a first abnormality determination coefficient using the data cache duration, cache error rate, and number of concurrently processed data; The first abnormality determination coefficient is obtained by the following formula: ； Among them, S 01 represents the first abnormality determination coefficient; n represents the number of unit times of the data cache module operation, and the unit time is 1s; P i represents the cache error rate corresponding to the i-th unit time; T pi represents the average data cache duration of the data stored in the data cache module corresponding to the i-th unit time; T c Indicates the preset maximum storage time allowed for the data cache module; Z i Indicates the number of concurrently processed data corresponding to the i-th unit time; m i T represents the number of data stored in the data cache module corresponding to the i-th unit time; m represents the number of data stored in the current data cache module; i represents the data cache duration corresponding to the i-th data; P ci Indicates the cache error rate corresponding to the unit time of the i-th data cache moment; comparing the first abnormality determination coefficient with a preset first abnormality determination coefficient threshold; When the first abnormality determination coefficient exceeds a preset first abnormality determination coefficient threshold, it is determined that the cache operation of the data cache module is abnormal, and an abnormality alarm is issued; When the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, a second operation parameter of the data cache module is used to perform a secondary abnormality determination on the cache operation of the data cache module.

8. The satellite payload ground control terminal for low-orbit satellite communications according to claim 7, characterized in that: When the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, a second operation parameter of the data cache module is used to perform a secondary abnormality determination on the cache operation of the data cache module, including: When the first abnormality determination coefficient does not exceed the preset first abnormality determination coefficient threshold, but exceeds the preset second abnormality determination coefficient threshold, the second operating parameter of the data cache module is retrieved, wherein the second operating parameter of the data cache module includes the cache data retrieval operation rate and the cache space occupancy rate of the data cache module; Obtaining a second abnormality determination coefficient using the cache data retrieval operation rate and the cache space occupancy rate of the data cache module; The second abnormality determination coefficient is obtained by the following formula: ； Among them, S 02 represents the second abnormality determination coefficient; n represents the number of unit times of the data cache module operation, and the unit time is 1s; P i represents the cache error rate corresponding to the i-th unit time; P yi represents the cache data retrieval operation rate corresponding to the i-th unit time; P zi represents the cache space occupancy rate of the data cache module corresponding to the i-th unit time; P b represents the standard deviation of the cache error rate corresponding to n units of time; P yb Indicates the standard deviation of the cache data retrieval operation rate corresponding to n units of time; comparing the second abnormality determination coefficient with a preset secondary abnormality determination coefficient threshold; When the second abnormality determination coefficient exceeds the preset secondary abnormality determination coefficient threshold, it is determined that the cache operation of the data cache module is abnormal, and an abnormality alarm is issued.

9. The satellite payload ground control terminal for low-orbit satellite communications as claimed in claim 8, characterized in that: Satellite communications unit, including: An uplink communication module is used to encode and encrypt the control instructions sent by the ground control terminal based on the judgment result of the instruction execution module, and transmit them uplink to the low-orbit satellite through the data communication channel; Downlink communication module: receives downlink data sent back by low-orbit satellites, decodes and corrects errors in the received raw data, and transmits the decoded downlink data to the processor unit for analysis and processing; The redundant communication module is used to monitor the operation quality of the data communication channel in real time, wherein the data communication channel includes a main communication link and multiple redundant communication links. When the operation quality of the main communication link is lower than the preset quality standard, the redundant communication link is switched.

10. The satellite payload ground control terminal for low-orbit satellite communications according to claim 9, characterized in that: The redundant communication module comprises: The parameter monitoring submodule is used to monitor the link operation parameters of each communication node in the main communication link in real time, evaluate the link operation quality through the operation parameters, compare the evaluation results with the preset communication quality threshold, and trigger the corresponding fault handling mechanism based on the comparison results; The quality inspection submodule is used to switch to each redundant communication link in turn based on the fault handling mechanism within the detection cycle, and to inspect the link operation parameters of each redundant communication link; The link selection submodule is used to sort the redundant communication links according to the link operation quality based on the inspection result, and select the redundant communication link with the highest link operation quality for automatic switching.

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