A multi-dimensional coordinated low-orbit satellite space communication link regulation system and method

Abstract

This invention discloses a multi-dimensional collaborative low-Earth orbit (LEO) satellite space communication link control system and method, belonging to the field of LEO satellite communication technology. The system includes a global collaborative scheduling module, a spectrum control module, an orbital airspace monitoring and control module, and a link transmission management module, employing TCP / IP industrial Ethernet bidirectional communication. The method achieves flexible and compliant multi-dimensional control of space communication through multi-band spectrum adaptive normalization, orbital status calibration, link adaptive optimization, global closed-loop feedback, and tiered emergency response. This invention features a clear hardware architecture, well-defined parameters, closed-loop autonomy, full disclosure, and strong practicality. It effectively addresses the shortcomings of existing technologies such as fragmented control, rigid interference, poor adaptability, and insufficient stability, and is applicable to LEO satellite communication link optimization and airspace compliance management in various scenarios.

Description

Technical Field

[0001] This invention relates to the field of low-Earth orbit (LEO) satellite communication technology, specifically to a multi-dimensional collaborative LEO satellite space communication link control system and method, applicable to LEO satellite constellation space-to-ground / inter-satellite communication link optimization, efficient spectrum utilization, orbital airspace order management, space electromagnetic environment protection, and compliant communication assurance. Background Technology

[0002] With the large-scale deployment of low-Earth orbit satellite constellations, space communication is characterized by high density, high-speed mobility, and multi-band concurrency. Satellite-to-ground / inter-satellite links face challenges such as frequent handovers, high transmission losses, complex interference, scarce spectrum resources, and orbital-space conflicts. Existing technologies mostly focus on single-dimensional optimization, such as spectrum monitoring, power adjustment, or orbit calculation alone, which has the following drawbacks: 1) Dimensional isolation and insufficient coordination prevent the integrated linkage of spectrum, track, link, and global scheduling; 2) The rigid control methods are prone to causing interference with legitimate signals and electromagnetic pollution, which does not meet the requirements of compliant control. 3) Fixed parameters and weak adaptability make it difficult to adapt to complex scenarios such as cities, borders, oceans, and high altitudes; 4) Without a closed-loop feedback mechanism, the monitoring-judgment-control-iteration process cannot operate autonomously, resulting in insufficient engineering practicality; 5) Insufficient disclosure, lacking clear hardware architecture, interface protocols, quantization parameters, and reproducible implementation methods.

[0003] Therefore, there is an urgent need for a low-orbit satellite space communication link control technology that is multi-dimensional, collaborative, adaptive, flexible, compliant, closed-loop autonomous, and engineering-applicable. Summary of the Invention

[0004] Purpose of the invention To address the problems of existing technologies, such as limited dimensionality, poor coordination, rigid control, weak scenario adaptability, lack of closed-loop mechanisms, and insufficient disclosure, this invention provides a multi-dimensional collaborative low-Earth orbit satellite space communication link control system and method. This system enables precise spectrum control, orbital order calibration, stable link transmission, full-domain collaborative scheduling, and full-process closed-loop feedback, meeting the requirements for efficient, stable, and compliant operation of low-Earth orbit satellite communication.

[0005] Technical solution System Composition A multi-dimensional collaborative low-Earth orbit satellite space communication link control system includes: a global collaborative scheduling module, a spectrum control module, an orbital airspace monitoring and control module, and a link transmission control module; the global collaborative scheduling module is connected to the spectrum control module, the orbital airspace monitoring and control module, and the link transmission control module via TCP / IP industrial Ethernet bidirectional communication to achieve real-time data interaction and synchronous command issuance.

[0006] The global collaborative scheduling module has a built-in embedded industrial control processing unit, data storage unit, and collaborative strategy algorithm unit. It is used to aggregate data, generate linkage control instructions, receive feedback and iterate parameters to complete the global closed-loop collaborative management and control.

[0007] Spectrum control module: includes RF spectrum sampling unit, licensed spectrum feature matching unit, and adaptive interference filtering unit; supports continuous scanning sampling from 10.7GHz to 14.5GHz and from 17.7GHz to 20.2GHz; the adaptive interference discrimination threshold is from -85dBm to -75dBm, which can be adaptively corrected according to background noise to achieve flexible filtering of unlicensed interference signals.

[0008] The orbital airspace monitoring and control module includes an orbital ephemeris sensing unit, an airspace order calibration unit, and a link attitude adaptation unit; it calculates satellite orbital position, velocity, and coverage in real time, determines airspace occupancy compliance, and dynamically adjusts communication attitude to avoid crosstalk and conflicts.

[0009] Link transmission control module: includes a communication signal normalization unit, an adaptive loss compensation unit, and a path status monitoring unit; it completes signal equalization, noise suppression, gain compensation, link status monitoring, and abnormal stability control.

[0010] Regulation methods A multi-dimensional collaborative low-Earth orbit satellite space communication link control method is applied to the above system, including the following steps: Step S1: The multi-band spectrum acquisition and adaptive normalization radio frequency spectrum sampling unit continuously samples the target airspace satellite communication frequency band; the authorized spectrum feature matching unit compares it with the pre-stored legal spectrum feature library; the adaptive interference filtering unit corrects the threshold according to the background noise, flexibly filters out unauthorized over-threshold interference signals, and retains and optimizes the legal communication channel.

[0011] Step S2: Orbital Status Analysis and Spacespace Order Calibration. The orbital ephemeris sensing unit acquires ephemeris data in real time and calculates the orbital status; the spacespace order calibration unit determines the compliance of spacespace communication and provides early warning and calibration for illegal signals and orbital conflicts; the link attitude adaptation unit dynamically adjusts the transmit and receive attitudes to eliminate neighboring satellite crosstalk.

[0012] Step S3: Communication Link Optimization and Abnormal Stability Control. The communication signal shaping unit performs adaptive equalization shaping and noise suppression on the signal; the adaptive loss compensation unit dynamically compensates the link gain based on the transmission distance, ionospheric attenuation, and meteorological parameters; the path status monitoring unit monitors the bit error rate, delay, and signal strength in real time, triggering abnormal stability control and path switching.

[0013] Step S4: Global Data Aggregation and Closed-Loop Feedback Control. The global collaborative scheduling module aggregates spectrum, track, and link data from all dimensions, generates linkage instructions based on the collaborative strategy, and issues them synchronously. Each module transmits execution results back in real time, and the scheduling module dynamically iterates and adjusts parameters to form an autonomous closed loop of acquisition, judgment, control, feedback, and iteration.

[0014] Step S5: Graded Anomaly Handling and Emergency Control When strong interference, serious track conflicts, link interruptions, or other anomalies are detected, the system automatically activates a graded emergency mechanism: performs deep filtering, secondary calibration, and backup path switching, and uploads anomaly information to ensure uninterrupted communication. Beneficial effects

[0015] 1) Multi-dimensional deep collaboration: Three-layer hardware architecture + four-dimensional functional modules + closed-loop feedback, improving control efficiency by more than 30% and interference suppression success rate ≥96%; 2) Strong adaptability and wide scene adaptation: Adaptive threshold and multi-band expansion, adaptable to stable operation in all scenarios such as cities, borders, oceans, and high altitudes; It accurately identifies legitimate signals, flexibly filters out interference, does not generate high-power electromagnetic pollution, and fully complies with spectrum and airspace management regulations.

[0016] 4) Fully disclosed and highly practical: The hardware structure, interface protocol, parameter range, and control logic are clear and complete, and can be directly reproduced and implemented in engineering by those skilled in the art; 5) Closed-loop autonomy and high stability: The entire process operates autonomously, significantly reducing the error rate and eliminating track conflict risks at a rate of ≥95%; 6) Modular and easily expandable: Supports multi-node networking, new frequency band expansion, and multi-constellation compatibility, suitable for scenarios such as airspace governance, aerospace testing, civil aviation communication, emergency rescue and disaster relief, and marine communication. Attached Figure Description

[0017] Figure 1 is a block diagram of a multi-dimensional collaborative low-orbit satellite space communication link control system according to the present invention. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, and those skilled in the art can implement it without creative effort.

[0019] Comparison of proportions Using traditional single-spectrum monitoring and forced shielding equipment, a continuous 72-hour test was conducted under the same scenario, frequency band, and coverage conditions as a benchmark. Example 1: Compliance Management of Domestic Urban Airspace

[0020] Scenario: Urban core area, interference from unauthorized signals from abroad, and congestion on authorized frequency bands.

[0021] Deployment: Three-tier hardware architecture, access to authorized spectrum feature library.

[0022] Spectrum: Scan 10.7GHz~14.5GHz, threshold set to -80dBm, filter out 2 unlicensed signals, improve licensed spectrum utilization by 28%.

[0023] Orbit: Real-time calculation of satellite orbit, calibration of link attitude, and elimination of crosstalk.

[0024] Link: Adaptive compensation for city attenuation, reducing bit error rate to 10⁻ 6 the following.

[0025] Results: Interference suppression success rate increased by 40%, no legitimate signals were falsely damaged, and closed-loop operation was stable. Example 2: Communication Cleanliness Control in Aerospace Test Park

[0026] Scenario: Satellite on-orbit testing, requiring isolation from external commercial satellite interference.

[0027] Deployment: Lock in the dedicated test frequency band, extend it to 17.7GHz~20.2GHz, and set the threshold to -85dBm.

[0028] Orbit: Real-time monitoring of passing satellites, prediction of interference windows and pre-initiation of calibration.

[0029] Link: Optimize the test link, monitor its status in real time, and ensure no interference or interruption.

[0030] Results: Communication purity is 100%, meeting high-precision testing requirements.

Claims

1. A multi-dimensional collaborative low-Earth orbit satellite space communication link control system, characterized in that, The system includes a global collaborative scheduling module, a spectrum control module, an orbital airspace monitoring and control module, and a link transmission management module. The global collaborative scheduling module is bidirectionally connected to the spectrum control module, the orbital airspace monitoring and control module, and the link transmission management module via TCP / IP industrial Ethernet protocol. The global collaborative scheduling module has an embedded industrial control processing unit, a data storage unit, and a collaborative strategy algorithm unit to realize data aggregation, command issuance, and closed-loop feedback control across all modules. The spectrum control module includes a radio frequency spectrum sampling unit, a licensed spectrum feature matching unit, and an adaptive interference filtering unit. The radio frequency spectrum sampling unit supports continuous scanning of multiple frequency bands from 10.7GHz to 14.5GHz and from 17.7GHz to 20.2GHz, and the adaptive interference filtering unit has an adaptive interference discrimination threshold adjustment function of -85dBm to -75dBm. The orbital airspace monitoring and control module includes an orbital ephemeris sensing unit, an airspace order calibration unit, and a link attitude adaptation unit. The link transmission management module includes a communication signal normalization unit, an adaptive loss compensation unit, and a path status monitoring unit.

2. The method of claim 1, wherein the method is applied to the system of claim 1. Includes the following steps: S1: The radio frequency spectrum sampling unit continuously collects satellite communication frequency bands in the target airspace. The authorized spectrum feature matching unit compares the sampled signal with the pre-stored legal spectrum features. The adaptive interference filtering unit corrects the interference discrimination threshold according to the background noise of the scene and flexibly filters out unauthorized interference signals exceeding the threshold. S2: The orbit ephemeris sensing unit acquires satellite ephemeris data in real time and calculates the orbit status. The airspace order calibration unit judges the compliance of airspace communication. The link attitude adaptation unit dynamically adjusts the communication link's transmit and receive attitude to avoid orbit signal conflicts and crosstalk. S3: The communication signal shaping unit performs adaptive equalization and shaping of the transmitted signal. The adaptive loss compensation unit dynamically compensates the link gain according to the transmission environment parameters. The path status monitoring unit monitors the link operation indicators in real time and triggers the abnormal stability control mechanism. S4: The global collaborative scheduling module gathers monitoring data from all modules, generates collaborative control instructions and issues them synchronously, receives execution feedback data from each module, dynamically iterates control parameters, and forms a global closed-loop autonomous control; S5: When strong interference, track conflicts, or link interruption anomalies are detected, a graded emergency mechanism is activated to perform deep filtering, secondary calibration, and backup path switching operations to ensure uninterrupted control.

3. The system of claim 1, wherein, The authorized spectrum feature matching unit has a built-in domestic authorized communication spectrum feature database, which stores spectrum frequency points, bandwidth, modulation mode feature parameters to achieve accurate matching and identification of legitimate signals.

4. The system of claim 1, wherein, The adaptive loss compensation unit dynamically adjusts the link transmission gain based on communication transmission distance, ionospheric attenuation, and environmental meteorological parameters.

5. The method of claim 2, wherein, The closed-loop autonomous control is a fully autonomous operation that involves real-time data acquisition, analysis and judgment, command issuance, execution feedback, and parameter iteration, without the need for manual intervention.

Images