A method and system for protection against ionospheric scintillation interference in meteorological satellite ground data reception

Abstract

The application provides a method and system for ionospheric scintillation interference protection in meteorological satellite ground data reception, and relates to the technical field of meteorological satellites, which comprises the following steps: real-time correlation identification of the elevation angle and azimuth angle data of a satellite receiving station antenna and matched ionospheric scintillation index elevation angle and azimuth angle data, generation of risk warning information of different grades by comprehensively considering the elevation angle and azimuth angle correlation of the satellite receiving station antenna and the ionospheric scintillation index risk; intelligent decision-making based on the risk warning information; intelligent adjustment of the ionospheric scintillation risk index identification inspection cycle according to the intelligent decision-making; and intelligent command and dispatch of the satellite ground station for ionospheric scintillation protection in the intelligent protection working state. The application can improve the reliability and anti-interference capability of satellite-ground communication.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of meteorological satellite technology, in particular to a method and system for ionospheric scintillation interference protection in meteorological satellite ground data reception. BACKGROUND

[0002] Ionospheric scintillation is a rapid fluctuation phenomenon of radio signal amplitude, phase and angle of arrival caused by irregular changes in ionospheric plasma density, mainly occurring in the ionospheric F layer region 60-1000 km from the ground. During the peak of solar activity or geomagnetic disturbance, ionospheric scintillation is particularly pronounced, causing serious interference to satellite-ground communication links (such as meteorological satellite data reception). Specifically, it manifests as signal attenuation (e.g. L-band signal power can drop by tens of decibels), phase distortion (leading to increased navigation and positioning errors), and code interference caused by multi-path propagation (increased bit error rate). These problems pose a major safety hazard to scenarios requiring high continuity, such as military communications and emergency communications.

[0003] Currently, the protection technology against ionospheric scintillation interference mainly focuses on post-response. For example, existing technologies monitor the location of ionospheric scintillation regions and suspend data reception after the ground antenna detects interference, and then resume business after the scintillation ends. However, this method has the following technical defects:

[0004] 1. It cannot predict the impact of ionospheric scintillation on a specific receiving station before it occurs, resulting in passive waiting after communication interruption and inability to avoid in advance.

[0005] 2. Existing solutions do not combine satellite mission schedules and geographic information, and cannot match ionospheric scintillation risks to real-time mission windows and geographic locations of different receiving stations, resulting in delayed protection measures.

[0006] 3. It does not distinguish between high-orbit satellites (stationary at subsatellite point) and low-orbit satellites (dynamically operating in near-earth orbit), and uses a unified response measure (such as relying solely on signal retransmission), which is inefficient and cannot guarantee business continuity.

[0007] 4. It does not establish a dynamic association mechanism between angle deviation and risk level, making it difficult to trigger differentiated protection strategies according to the severity of the interference, resulting in resource waste or insufficient response. SUMMARY

[0008] The technical problem to be solved by the present application is to provide a method and system for ionospheric scintillation interference protection in meteorological satellite ground data reception, which can improve the reliability and anti-interference capability of satellite-ground communication.

[0009] To solve the above technical problems, the technical solution of the present application is as follows:

[0010] The first aspect is a method for ionospheric scintillation interference protection in meteorological satellite ground data reception, the method comprising:

[0011] Step S1: Real-time acquisition of satellite receiving task schedules, geographic information data, and ionospheric scintillation index data of multiple satellite data ground receiving stations;

[0012] Step S2: Time and geographic information matching of the satellite receiving task schedules and the ionospheric scintillation index data, output of matched antenna elevation angle, azimuth angle data, and ionospheric scintillation index matching data;

[0013] Step S3: Real-time correlation identification of the satellite receiving station antenna elevation angle and azimuth angle data and the matched ionospheric scintillation index elevation angle and azimuth angle data, generation of risk warning information of different levels by comprehensively considering the satellite receiving station antenna elevation angle and azimuth angle correlation and the ionospheric scintillation index risk;

[0014] Step S4: Intelligent decision-making based on the risk warning information, intelligent adjustment of the ionospheric scintillation risk index identification inspection period according to the intelligent decision-making;

[0015] Step S5: Intelligent command and scheduling of satellite ground stations for ionospheric scintillation protection in the intelligent protection working state.

[0016] The second aspect is a system for ionospheric scintillation interference protection in meteorological satellite ground data reception, comprising:

[0017] An acquisition module for real-time acquisition of satellite receiving task schedules, geographic information data, and ionospheric scintillation index data of multiple satellite data ground receiving stations;

[0018] A matching module for time and geographic information matching of the satellite receiving task schedules and the ionospheric scintillation index data, output of matched antenna elevation angle, azimuth angle data, and ionospheric scintillation index matching data;

[0019] A warning module for real-time correlation identification of the satellite receiving station antenna elevation angle and azimuth angle data and the matched ionospheric scintillation index elevation angle and azimuth angle data, generation of risk warning information of different levels by comprehensively considering the satellite receiving station antenna elevation angle and azimuth angle correlation and the ionospheric scintillation index risk;

[0020] An adjustment module for intelligent decision-making based on the risk warning information, intelligent adjustment of the ionospheric scintillation risk index identification inspection period according to the intelligent decision-making;

[0021] A switching module for intelligent command and scheduling of satellite ground stations for ionospheric scintillation protection in the intelligent protection working state.

[0022] In a third aspect, a computing device comprises:

[0023] one or more processors;

[0024] a memory device storing one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method.

[0025] In a fourth aspect, a computer-readable storage medium stores a program, which when executed by a processor, implements the method.

[0026] The above scheme of the present application at least has the following beneficial effects:

[0027] By matching the satellite receiving task schedule, geographic information and ionospheric scintillation index data in real time, combined with antenna angle deviation identification, the interference risk of ionospheric scintillation on a specific receiving station can be predicted in advance, and graded warning information can be generated, realizing a fundamental change from passive waiting to active avoidance, avoiding communication interruption or data loss.

[0028] Based on the risk warning level (such as normal, warning, intelligent protection state) and the risk index identification result, the data reporting frequency, the protection measure priority and the execution intensity are dynamically adjusted. For example, under the condition of very high risk, the inspection cycle is shortened to 1 minute and the protection operation is immediately executed, while under the condition of low risk, only monitoring is maintained, effectively balancing resource consumption and protection efficiency.

[0029] According to the difference in communication characteristics of low-orbit satellites (dynamic near-earth orbit) and high-orbit satellites (geostationary orbit), communication frequency band switching and primary and backup receiving station switching strategies are respectively adopted. The former reduces signal attenuation through high frequency band anti-interference characteristics, and the latter uses redundant links to ensure business continuity, solving the problem of low efficiency of traditional single protection measures.

[0030] Integrating satellite task time, geographic coordinates, ionospheric scintillation index and antenna angle data, through second-level intelligent matching and real-time correlation analysis, accurate risk positioning in multi-station and multi-task scenarios is realized, providing high confidence decision basis for protection strategies, avoiding misjudgment or delay caused by data fragmentation.

[0031] By reducing the communication interruption time and the number of data retransmissions, the satellite data receiving efficiency is significantly improved, ensuring the real-time performance of key applications such as weather forecasting and disaster monitoring; at the same time, high frequency band switching and redundant link design prolong the service life of the equipment and reduce the operation and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1is a flowchart of a method for ionospheric scintillation interference protection in meteorological satellite ground data reception provided by an embodiment of the present application.

[0033] Figure 2 is a scintillation index information matching flowchart of a method for ionospheric scintillation interference protection in meteorological satellite ground data reception provided by an embodiment of the present application.

[0034] Figure 3 is a satellite receiving station antenna azimuth and ionospheric scintillation index antenna azimuth real-time correlation identification flowchart.

[0035] Figure 4 is a satellite receiving station antenna azimuth and ionospheric scintillation index antenna elevation real-time correlation identification flowchart.

[0036] Figure 5 is an ionospheric scintillation protection intelligent decision-making subsystem flowchart.

[0037] Figure 6 is an ionospheric scintillation risk index identification schematic diagram.

[0038] Figure 7 is an ionospheric scintillation comprehensive protection flowchart. DETAILED DESCRIPTION

[0039] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art.

[0040] As shown in Figure 1 an embodiment of the present application proposes a method for ionospheric scintillation interference protection in meteorological satellite ground data reception, the method comprising the following steps:

[0041] Step S1: Real-time acquisition of satellite receiving task schedules, geographic information data, and ionospheric scintillation index data of a plurality of satellite data ground receiving stations;

[0042] Step S2: Time and geographic information matching of the satellite receiving task schedule and the ionospheric scintillation index data, output of matched antenna elevation, azimuth data, and ionospheric scintillation index matching data;

[0043] Step S3: Real-time correlation identification is performed on the elevation and azimuth angle data of the satellite receiving station antenna and the matched ionospheric scintillation index elevation and azimuth angle data, the elevation and azimuth angle correlation of the satellite receiving station antenna and the ionospheric scintillation index risk are comprehensively considered, and risk warning information of different levels is generated;

[0044] Step S4: Based on the risk warning information, intelligent decision is made, and the ionospheric scintillation risk index identification inspection cycle is intelligently adjusted according to the intelligent decision;

[0045] Step S5: In the intelligent protection state, the satellite ground station is intelligently commanded and dispatched to perform ionospheric scintillation protection.

[0046] In the embodiment of the present application, by matching the satellite receiving task schedule, geographic information and ionospheric scintillation index data in real time, combined with the antenna angle deviation identification, the interference risk of ionospheric scintillation on a specific receiving station can be predicted in advance, and hierarchical warning information is generated, realizing the fundamental change from passive waiting to active avoidance, avoiding communication interruption or data loss. Based on the risk warning level (such as normal, warning, intelligent protection state) and the risk index identification result, the data reporting frequency, the protection measure priority and the execution intensity are dynamically adjusted. For example, under the condition of high risk, the inspection cycle is shortened to 1 minute and the protection operation is immediately executed, while under the condition of low risk, only monitoring is maintained, effectively balancing resource consumption and protection efficiency. In view of the difference in communication characteristics between low-orbit satellites (dynamic near-earth orbit) and high-orbit satellites (geostationary orbit), communication frequency band switching and primary and secondary receiving station switching strategies are adopted respectively. The former reduces signal attenuation through high frequency band anti-interference characteristics, and the latter uses redundant link to ensure business continuity, solving the problem of low efficiency of traditional single protection measure. Integrating satellite task time, geographic coordinates, ionospheric scintillation index and antenna angle data, through second-level intelligent matching and real-time correlation analysis, accurate risk positioning in multi-station and multi-task scenarios is realized, providing high confidence decision basis for protection strategy, avoiding misjudgment or delay caused by data fragmentation. By reducing the communication interruption time and the number of data retransmissions, the satellite data receiving efficiency is significantly improved, and the real-time performance of key applications such as weather forecasting and disaster monitoring is ensured; at the same time, the high frequency band switching and redundant link design prolong the service life of the equipment and reduce the operation and maintenance cost.

[0047] In a preferred embodiment of the present application, step S1: real-time acquisition of satellite receiving task schedule, geographic information data and ionospheric scintillation index data of a plurality of satellite data ground receiving stations, comprising:

[0048] Step S11: Obtain the satellite receiving task schedule data of a plurality of satellite data ground receiving stations through the satellite meteorological center business network, including satellite star mark data, satellite ground receiving station number data, data receiving start time and end time;

[0049] Step S12: Obtain geographic information data of multiple satellite data ground receiving stations, including longitude data and latitude data, and intelligently analyze the antenna elevation angle and azimuth angle prediction values of each receiving station;

[0050] Step S13: Obtain ionospheric scintillation index data in real time through a space weather center, including minute-level time data, azimuth data, elevation angle data, and corresponding ionospheric scintillation index antenna elevation angle and azimuth angle matching data;

[0051] Step S14: Perform second-level intelligent matching on the satellite receiving task schedule, geographic information data, and ionospheric scintillation index data to generate multi-station space environment real-time ionospheric scintillation data.

[0052] In the embodiment of the present application, the above-mentioned step S11: accessing the special service network of the national satellite meteorological center, obtaining the task schedule data of each satellite data ground receiving station in real time through a standardized API interface or database query; satellite star data: a unique number (such as FY-4A, Himawari-9) identifying a satellite, used to distinguish different meteorological satellites;

[0053] Ground receiving station number: identifies the identity of the receiving station (such as Beijing station, Guangzhou station);

[0054] Data receiving time window: start time and end time accurate to milliseconds, defining the receiving task period of the ground station when the satellite passes.

[0055] Using high-concurrency data pulling technology (such as HTTP / 2 or WebSocket) combined with data caching mechanism to ensure low-latency update and high availability of task schedule data.

[0056] By obtaining the task schedule in real time, the task window of each receiving station is determined, providing a time reference for subsequent matching of ionospheric scintillation risks, supporting simultaneous processing of task data of multiple satellites and multiple receiving stations, and improving the parallel processing capability of the system.

[0057] The above-mentioned step S12 obtains the accurate longitude and latitude coordinates of the receiving station through the built-in GPS / Beidou positioning module, combines with digital elevation model (DEM) data to correct the influence of receiving station altitude on antenna pointing. Based on satellite ephemeris data and orbit dynamics model (such as SGP4 / SDP4), the real-time orbit position of the satellite in the task time window is calculated; using spherical trigonometry formula, combining with the geographic coordinates of the receiving station, the required elevation angle (Elevation) and azimuth angle (Azimuth) of the antenna pointing to the satellite are dynamically predicted, a machine learning model (such as LSTM) is introduced to optimize the angle prediction accuracy according to historical task data, and the error caused by environmental interference is reduced.

[0058] The application realizes sub-degree prediction accuracy of antenna angle, reduces signal receiving deviation by fusing satellite orbit model and geographic information; and improves robustness under complex weather conditions by using machine learning to dynamically optimize prediction model.

[0059] The step S13 is connected with the real-time data service of the national space weather monitoring and early warning center to obtain minute-level updated data of global ionospheric scintillation index (such as S4 index, phase scintillation index); structured data such as JSON / NetCDF are processed to extract time stamp, latitude and longitude grid, scintillation intensity and matched antenna elevation angle / azimuth angle parameters, the ionospheric scintillation data are mapped to the earth coordinate system (such as WGS84), and spatial interpolation matching is performed with the geographic coordinates of the receiving station to determine the ionospheric region that may be affected in the task window of each receiving station, the ionospheric scintillation index is updated in minutes, the ionospheric disturbance region is locked in real time, the resource waste of global monitoring is avoided, the ionospheric data are associated with the antenna angle parameters, and structured input is provided for subsequent correlation identification.

[0060] The step S14 is to align the task time window (step S11) with the time stamp of the ionospheric scintillation data, extract the scintillation events that may affect the receiving station in the task period; based on the latitude and longitude of the receiving station (step S12) and the latitude and longitude grid of the ionospheric scintillation region (step S13), the Geo-fencing technology is used to judge whether the receiving station is located in the scintillation influence range; the real-time correlation analysis of multi-source data is performed by using a streaming computing framework (such as Apache Flink) to generate matching results containing the following fields:

[0061] Receiving station number, satellite star mark;

[0062] Matched scintillation index intensity, influence time window;

[0063] The deviation value of the predicted antenna angle and the ionospheric scintillation angle.

[0064] The second-level data matching is realized by using the streaming computing to ensure the timeliness of the risk warning, the task, geographic and ionospheric data are integrated to build a risk panoramic view of the receiving station level, and basis is provided for the differentiated protection strategy.

[0065] The application upgrades from passive response to active risk avoidance based on multi-source data fusion, reduces the probability of communication interruption, avoids the resource waste of global protection through accurate matching and prediction, focuses on the high-risk task window, and modularly designed to support rapid access of new data sources (such as newly added satellites or receiving stations), and adapt to the business expansion demand.

[0066] In the embodiment of the present application, when specifically applied, the satellite data ground receiving station ionospheric scintillation protection requirement real-time intelligent perception subsystem intelligently perceives the satellite data ground receiving station ionospheric scintillation protection requirement in real time, obtains satellite receiving task schedule data of multiple satellite data ground receiving stations and geographic information data of multiple satellite data ground receiving stations through the national satellite meteorological center service network, obtains ionospheric scintillation index data through the national space weather center, and provides visual real-time ionospheric scintillation data of multiple stations for the operating personnel.

[0067] The satellite data ground receiving station ionospheric scintillation protection requirement real-time intelligent perception subsystem has the ability of intelligently confirming multiple satellite identifiers and multiple satellite data ground receiving station numbers in seconds, intelligently extracting relevant satellite receiving task schedules in seconds, intelligently analyzing data receiving time windows of multiple satellite data ground receiving stations, intelligently analyzing geographic longitude information of multiple satellite data ground receiving stations, and intelligently analyzing geographic latitude information of multiple satellite data ground receiving stations. The subsystem outputs satellite identifier data, satellite data ground receiving station number data, satellite data ground receiving station data receiving start time data, satellite data ground receiving station data receiving end time data, satellite data ground receiving station geographic longitude information data, satellite data ground receiving station geographic latitude information data, ionospheric scintillation index minute-level time data, ionospheric scintillation index longitude data, and ionospheric scintillation index latitude data.

[0068] The satellite data ground receiving station ionospheric scintillation protection requirement real-time intelligent perception subsystem sends satellite data ground receiving station ionospheric scintillation protection requirement data, including satellite identifier data, satellite data ground receiving station number data, satellite data ground receiving station data receiving start time data, satellite data ground receiving station data receiving end time data, satellite data ground receiving station geographic longitude information data, satellite data ground receiving station geographic latitude information data, ionospheric scintillation index minute-level time data, ionospheric scintillation index longitude data, and ionospheric scintillation index latitude data, to the satellite data ground receiving station and ionospheric scintillation index information matching subsystem. The satellite data ground receiving station ionospheric scintillation protection requirement real-time intelligent perception subsystem distributes satellite identifier data, satellite data ground receiving station number data, satellite data ground receiving station data receiving start time data, and satellite data ground receiving station data receiving end time data to the ionospheric scintillation protection intelligent decision subsystem.

[0069] In a preferred embodiment of the present application, step S2: time and geographic information matching of the satellite receiving task schedule and the ionospheric scintillation index data is performed, and matched antenna elevation angle, azimuth angle data, and ionospheric scintillation index matching data are output, including:

[0070] Step S21: Based on the satellite receiving task time window period, the data receiving start time and end time of the multiple satellite data ground receiving stations are matched intelligently at the second level, and the real-time ionospheric scintillation index data corresponding to each receiving station in the time window period is extracted.

[0071] Step S22: According to the longitude and latitude information in the geographic information data, the longitude and latitude corresponding relationship between each satellite data ground receiving station and the ionospheric scintillation index is intelligently matched, and the satellite receiving station and ionospheric scintillation index geographic information association data is generated.

[0072] Step S23: In combination with the time window period and the geographic information association data, the elevation angle prediction value and azimuth angle prediction value of the satellite receiving station antenna in the data receiving time window period are parsed and output, and the corresponding ionospheric scintillation index antenna elevation angle matching data and azimuth angle matching data are parsed and output.

[0073] In the embodiment of the application, the above-mentioned step S21: based on the second intelligent matching of the task time window, the implementation process is as follows:

[0074] The data receiving start time and end time of each receiving station are extracted from the satellite receiving task time table obtained in step S1, and the accuracy is up to the millisecond level; the real-time ionospheric scintillation index data stream generated in step S1 is accessed synchronously, and the timestamp field (minute level accuracy) is extracted; the ionospheric scintillation data is segmented according to the receiving task time window using a time sliding window algorithm (such as TumblingWindow), and the scintillation index data overlapping with the task window is extracted.

[0075] Through a stream computing engine (such as ApacheFlink), parallel processing of multiple receiving stations is realized, and the ionospheric scintillation data in the task window of each receiving station is filtered and aggregated; the output results include: receiving station number, matched time window, real-time ionospheric scintillation index (such as S4 index) and its time distribution.

[0076] The application avoids misjudgment caused by time deviation, ensures that only scintillation events that may affect communication during the task period are analyzed, supports concurrent matching of multiple stations and multiple tasks, and meets the real-time needs of large-scale ground station groups.

[0077] The above-mentioned step S23: parsing and outputting the antenna angle and scintillation matching data, the implementation process is as follows:

[0078] In combination with satellite orbit parameters (step S12) and the geographic location of the receiving station, the predicted values of the elevation angle and azimuth angle of the antenna pointing within the mission window are calculated using spherical trigonometry formula, the Kalman filtering algorithm is introduced to eliminate the instantaneous angle fluctuation caused by atmospheric refraction or equipment jitter, the prediction stability is improved, the antenna elevation angle / azimuth angle parameters of the flicker region associated with the receiving station are extracted from the ionospheric flicker index data (step S13), and the deviation values (ΔElevation, ΔAzimuth) of the predicted angle and the flicker angle are calculated, and whether the deviation exceeds the error rate threshold (such as ±5°) is marked.

[0079] The complete data packet of each matching record is generated, including:

[0080] The receiving station number, satellite star mark, and mission time window;

[0081] The predicted antenna elevation angle / azimuth angle;

[0082] The matched ionospheric flicker angle and deviation value;

[0083] The flicker intensity level (low, medium, and high).

[0084] The data is pushed to the risk identification subsystem through a message queue (such as Kafka) to trigger real-time early warning.

[0085] The application provides specific numerical angle deviation, which provides a direct basis for risk classification (such as low, high, and extremely high correlation), unified output format, ensures that the subsequent subsystem (such as the decision module) does not need to be parsed again, reduces processing delay, improves the robustness of angle prediction through the filtering algorithm, and reduces the influence of environmental noise on the identification result.

[0086] In the embodiment of the application, the task time, the geographic location of the receiving station, and the ionospheric disturbance are deeply fused in the time and space dimensions to avoid the limitation of “single-dimensional matching in time or space” in the traditional scheme, the accuracy of risk identification is significantly improved, the second-level matching and streaming processing ensure the response speed of the protection system, the invalid data processing is reduced through the geographic fence and interpolation algorithm, the calculation resource consumption is reduced, and the structured angle deviation and flicker intensity data are output.

[0087] In a preferred embodiment of the application, step S22: according to the longitude and latitude information in the geographic information data, the longitude and latitude corresponding relationship between each satellite data ground receiving station and the ionospheric flicker index is intelligently matched to generate satellite receiving station and ionospheric flicker index geographic information association data, including:

[0088] Step S221: based on the longitude data of the satellite data ground receiving station and the longitude data of the ionospheric flicker index, dynamic range matching is performed to determine whether the longitude deviation of the receiving station and the ionospheric flicker region is within a preset error range.

[0089] Step S222: Based on the latitude data of the satellite data ground receiving station and the latitude data of the ionospheric scintillation index, the dynamic range matching is performed to determine whether the latitude deviation of the receiving station and the ionospheric scintillation region is within the preset error range;

[0090] Step S223: If the longitude deviation and the latitude deviation are both within the error range, the satellite receiving station and the ionospheric scintillation index geographical information association data are generated, including the receiving station number, the matched scintillation index longitude and latitude range, and the matching time stamp.

[0091] In the embodiment of the present application, the above-mentioned step S221, the dynamic range matching based on the longitude data, realizes the process:

[0092] The accurate longitude data of the satellite data ground receiving station is obtained from step S12 (such as Beijing station: East longitude 116.4°); the longitude grid data in the ionospheric scintillation index data is obtained from step S13 (such as the global is divided into 0.5°×0.5° longitude and latitude grid, each grid contains the corresponding scintillation intensity value); a dynamic sliding window is constructed according to the preset error range (such as ±2°) with the receiving station longitude as the center; the longitude grid of the ionospheric scintillation index is traversed in the sliding window, and all grid regions with a longitude deviation within the error range from the receiving station longitude are screened out; the deviation value (ΔLon) of the receiving station longitude and the center longitude of the matched grid is calculated, and whether it exceeds the threshold is marked. According to the satellite orbit height and the ionospheric height, the error range is dynamically adjusted (for example, when the low-orbit satellite has a low elevation angle, the ionospheric piercing point is farther away from the receiving station, and the longitude matching range needs to be expanded).

[0093] In the embodiment of the present application, the matching range is limited by the sliding window, avoiding global traversal and saving computing resources; the error range is dynamically adjusted according to the satellite type and the elevation angle, improving the matching accuracy.

[0094] In the embodiment of the present application, the above-mentioned step S222: dynamic range matching based on latitude data, realizes the process:

[0095] The receiving station latitude data is obtained (such as Guangzhou station: North latitude 23.1°); the latitude grid data in the ionospheric scintillation index data is extracted (aligned with the longitude grid), and the same sliding window mechanism as the longitude matching is adopted, but the error range is adjusted according to the latitude characteristics (such as ±1.5°), because the propagation range of the ionospheric disturbance in the latitude direction is usually smaller than that in the longitude direction; the scintillation intensity of the latitude grid in the matching range is screened, and only the grid with an intensity exceeding the threshold (such as S4 index≥0.4) is retained; the deviation value (ΔLat) of the receiving station latitude and the center latitude of the matched grid is calculated, and the latitude deviation is verified whether it can cause the signal path to pass through the scintillation region (for example, using the ionospheric piercing point model) in combination with the earth curvature and the ionospheric height.

[0096] The latitude distribution characteristics of the ionospheric disturbance are used to narrow the matching range and improve the matching efficiency, and the piercing point model is used for checking to avoid misjudgment caused by pure mathematical matching.

[0097] The step S223 generates geographical information associated data, and the implementation process is as follows:

[0098] If the longitude deviation (ΔLon) and the latitude deviation (ΔLat) of steps S221 and S222 are within the preset error range (for example, ΔLon≤±2° and ΔLat≤±1.5°), it is determined that the receiving station and the ionospheric scintillation area are geographically associated; if any deviation exceeds the range, the matching result is discarded.

[0099] A record is generated for each valid match, including:

[0100] Receiving station number: uniquely identifies the affected receiving station;

[0101] Matched scintillation index longitude range: for example, 114.5°-118.5°E;

[0102] Matched scintillation index latitude range: for example, 21.5°-24.5°N;

[0103] Match time stamp: task window time accurate to seconds (for example, 2023-10-05 14:30:00).

[0104] Write the associated data into a distributed database (such as Elasticsearch) to support fast retrieval and historical backtracking; push to the risk identification subsystem as input for angle correlation analysis.

[0105] The present application ensures that only the scintillation area that may actually affect communication is associated by using double deviation identification (longitude + latitude), provides clear longitude and latitude ranges and temporal information, and provides an operable input for subsequent protection decisions, uses a distributed database to support high-concurrency queries, and meets the real-time monitoring needs of multiple receiving stations.

[0106] In the embodiments of the present application, when specifically applied, the satellite data ground receiving station and ionospheric scintillation index information matching subsystem matches the ionospheric scintillation index for a single or multiple satellite data ground receiving station data receiving time window period.

[0107] The satellite data ground receiving station and ionospheric scintillation index information matching subsystem receives the ionospheric scintillation protection data of the satellite data ground receiving station, matches the satellite data ground receiving station and the ionospheric scintillation index information, has the ability of intelligently matching the real-time ionospheric scintillation index data of multiple satellite data ground receiving station data receiving time window periods, intelligently matching the longitude information of multiple satellite data ground receiving stations and ionospheric scintillation index, and intelligently matching the latitude information of multiple satellite data ground receiving stations and ionospheric scintillation index. The intelligent analysis outputs the data matched with each other in time and geographical information of the satellite data ground receiving station and the ionospheric scintillation index information, including the antenna elevation angle data of the satellite receiving station data receiving time window period, the antenna azimuth angle data of the satellite receiving station data receiving time window period, the ionospheric scintillation index antenna elevation angle matching data, the ionospheric scintillation index antenna azimuth angle matching data, and the satellite data ground receiving station ionospheric scintillation index matching data.

[0108] The satellite data ground receiving station and ionospheric scintillation index information matching subsystem sends the matched multiple satellite data ground receiving station data receiving time window period real-time ionospheric scintillation index data, the data matched with each other in time and geographical information of the satellite data ground receiving station and the ionospheric scintillation index information to the satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem and the satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem, respectively.

[0109] The satellite data ground receiving station and ionospheric scintillation index information matching subsystem sends data to the satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem, including the satellite receiving station data receiving time window period antenna elevation angle data and the ionospheric scintillation index antenna elevation angle matching data. The satellite data ground receiving station and ionospheric scintillation index information matching subsystem sends data to the satellite receiving station antenna azimuth angle and ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem, including the satellite receiving station data receiving time window period antenna azimuth angle data and the ionospheric scintillation index antenna azimuth angle matching data. The satellite data ground receiving station and ionospheric scintillation index information matching subsystem sends the satellite data ground receiving station ionospheric scintillation index matching data to the ionospheric scintillation risk index identification subsystem.

[0110] In a preferred embodiment of the present application, step S3: real-time correlation identification is performed on the elevation angle and azimuth angle data of the satellite receiving station antenna and the matched ionospheric scintillation index elevation angle and azimuth angle data, different levels of risk warning information are generated by comprehensively considering the correlation of the elevation angle and azimuth angle of the satellite receiving station antenna and the ionospheric scintillation index risk, including:

[0111] During the data reception time window of the satellite receiving station, correlation analysis is performed on the azimuth angle data of the satellite receiving station antenna and the azimuth angle data of the ionospheric scintillation index antenna to identify the system status for real-time early warning or alarm.

[0112] The real-time correlation identification subsystem between the satellite receiving station antenna elevation angle and the ionospheric scintillation index antenna azimuth angle performs correlation analysis between the satellite receiving station antenna azimuth angle data and the ionospheric scintillation index antenna azimuth angle data during the satellite receiving station's data reception time window, and performs real-time early warning or alarm status identification.

[0113] When the real-time correlation identification subsystem between the antenna azimuth angle of the satellite receiving station and the azimuth angle of the ionospheric scintillation index antenna is outside the ±5° range during the data reception time window of the satellite receiving station, the real-time correlation identification subsystem between the antenna azimuth angle of the satellite receiving station and the azimuth angle of the ionospheric scintillation index antenna sends low correlation information on ionospheric scintillation risk to the intelligent decision-making subsystem for ionospheric scintillation protection.

[0114] When the real-time correlation identification subsystem between the antenna azimuth angle of the satellite receiving station and the azimuth angle of the ionospheric scintillation index antenna is within ±5° during the data reception time window of the satellite receiving station, the real-time correlation identification subsystem between the antenna azimuth angle of the satellite receiving station and the azimuth angle of the ionospheric scintillation index antenna sends high correlation information on ionospheric scintillation risk to the intelligent decision-making subsystem for ionospheric scintillation protection.

[0115] When the satellite receiving station antenna azimuth angle and the ionospheric scintillation index antenna azimuth angle matching data are within ±2° during the data reception time window of the satellite receiving station, the satellite receiving station antenna azimuth angle and the ionospheric scintillation index antenna azimuth angle matching data are within ±2°, the satellite receiving station antenna azimuth angle and the ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem sends ionospheric scintillation risk highly correlated information to the ionospheric scintillation protection intelligent decision-making subsystem.

[0116] In a preferred embodiment of the present invention, step S4: making intelligent decisions based on the risk warning information, including:

[0117] The intelligent decision-making subsystem for ionospheric scintillation protection receives ionospheric scintillation risk correlation information sent by the real-time correlation identification subsystem between the antenna elevation angle of the satellite receiving station and the ionospheric scintillation index antenna elevation angle; it also receives satellite star marker data, satellite ground receiving station number data, satellite data ground receiving station data reception start time data, satellite data ground receiving station data reception end time data, and ionospheric scintillation risk identification results from the ionospheric scintillation risk index identification subsystem to make intelligent decisions.

[0118] The ionospheric scintillation protection intelligent decision subsystem intelligently comprehensively analyzes and judges the real-time correlation information of the azimuth and elevation angle of the satellite receiving station antenna and the azimuth and elevation angle of the ionospheric scintillation index and the ionospheric scintillation risk index, when the real-time correlation information of the azimuth and elevation angle of the antenna and the azimuth and elevation angle of the ionospheric scintillation index is low correlation, and the ionospheric scintillation risk is low, it is decided that the ionospheric scintillation risk of the satellite receiving station is low, the ionospheric scintillation intelligent protection system is in a normal working state, and the ionospheric scintillation interference risk information of the satellite receiving station is reported every 5 minutes; when the real-time correlation information of the azimuth and elevation angle of the antenna and the azimuth and elevation angle of the ionospheric scintillation index is high correlation or very high correlation, or the ionospheric scintillation risk index is significant or early warning, it is decided that the ionospheric scintillation risk of the satellite receiving station is high, the ionospheric scintillation intelligent protection system is in an early warning working state, and the ionospheric scintillation interference risk early warning information of the satellite receiving station is reported every 2 minutes;

[0119] When the real-time correlation information of the azimuth and elevation angle of the antenna and the azimuth and elevation angle of the ionospheric scintillation index is very high correlation, and the ionospheric scintillation risk index is early warning, it is decided that the ionospheric scintillation risk of the satellite receiving station is very high, the ionospheric scintillation intelligent protection system is in an intelligent protection working state, and the ionospheric scintillation interference risk early warning information of the satellite receiving station is reported every 1 minute.

[0120] In a preferred embodiment of the present application, according to intelligent decision, the ionospheric scintillation risk index judgment inspection cycle is intelligently adjusted, including:

[0121] The satellite data ground receiving station ionospheric scintillation index matching data transmitted by the satellite data ground receiving station and ionospheric scintillation index information matching subsystem provides multiple satellite data ground receiving station matching ionospheric scintillation index information data for the operator;

[0122] The ionospheric scintillation risk index level of multiple satellite data ground receiving stations within 4 hours is judged, and the low-energy particle surface charging judgment result of the multi-satellite space environment is provided for the operator;

[0123] In the conventional working state, the ionospheric scintillation risk index identification subsystem intelligently adjusts the ionospheric scintillation risk index identification cycle to 5 minutes, performs multi-station ionospheric scintillation risk index level determination, and reports ionospheric scintillation risk level data information of the satellite data ground receiving station and ionospheric scintillation risk level information prompt; in the early warning working state, the ionospheric scintillation risk index identification subsystem intelligently adjusts the ionospheric scintillation risk index identification cycle to 2 minutes, performs multi-station ionospheric scintillation risk index level determination, and reports ionospheric scintillation risk level data information of the satellite data ground receiving station and ionospheric scintillation risk level information prompt; in the intelligent protection working state, the ionospheric scintillation risk index identification subsystem intelligently adjusts the ionospheric scintillation risk index identification cycle to 1 minute, performs multi-station ionospheric scintillation risk index level determination, and reports ionospheric scintillation risk level data information of the satellite data ground receiving station and ionospheric scintillation risk level information prompt.

[0124] In the embodiment of the present application, the ionospheric scintillation risk index identification subsystem provides periodic ionospheric scintillation risk index identification for system-level ionospheric scintillation protection and early warning tasks of multiple satellite data ground receiving stations. The main content includes using satellite data ground receiving station ionospheric scintillation index matching data sent by the satellite data ground receiving station and ionospheric scintillation index information matching subsystem, automatically identifying ionospheric scintillation risk data to determine the risk level, warning the activity level of ionospheric scintillation of multiple satellite data ground receiving stations within 4 hours, and factually verifying and alarming the activity level of ionospheric scintillation of multiple satellite data ground receiving stations within 2 hours. According to the ionospheric scintillation intelligent protection system working state data issued by the ionospheric scintillation protection intelligent decision subsystem, the ionospheric scintillation risk index identification cycle is intelligently adjusted.

[0125] The functions of the specific implementation are as follows:

[0126] 1) Ionospheric scintillation index data acquisition submodule function: through satellite data ground receiving station and ionospheric scintillation index information matching subsystem satellite data ground receiving station ionospheric scintillation index matching data, visual multiple satellite data ground receiving station matching ionospheric scintillation index information data is provided for the operator.

[0127] 2) Multi-station ionospheric scintillation risk index level determination sub-module function: determine the ionospheric scintillation risk index level of multiple satellite data ground receiving stations within 4 hours, and provide visual multi-satellite space environment low-energy particle surface charging determination results for the operator. Among them, the satellite data ground receiving station matches the ionospheric scintillation risk index below 0.40, the satellite data ground receiving station matching the ionospheric scintillation risk level is determined to be extremely low, the satellite data ground receiving station ionospheric scintillation risk level extremely low data information is sent to the ionospheric scintillation protection intelligent decision subsystem, and no attention is required; the satellite data ground receiving station matches the ionospheric scintillation risk index from 0.40 to 0.60, the satellite data ground receiving station matching the ionospheric scintillation risk level is determined to be low, the satellite data ground receiving station ionospheric scintillation risk level low data information is sent to the ionospheric scintillation protection intelligent decision subsystem, and the ionospheric scintillation risk level needs attention information prompt; the satellite data ground receiving station matches the ionospheric scintillation risk index from 0.60 to 0.80, the satellite data ground receiving station matching the ionospheric scintillation risk level is determined to be high, the satellite data ground receiving station ionospheric scintillation risk level high data information is sent to the ionospheric scintillation protection intelligent decision subsystem, and the ionospheric scintillation risk level is significantly prompted; the satellite data ground receiving station matches the ionospheric scintillation risk index from 0.80 to 1.00, the satellite data ground receiving station matching the ionospheric scintillation risk level is determined to be extremely high, the satellite data ground receiving station ionospheric scintillation risk level extremely high data information is sent to the ionospheric scintillation protection intelligent decision subsystem, and the ionospheric scintillation risk level warning information prompt;

[0128] 3) Ionospheric scintillation risk index determination subsystem working state intelligent adjustment sub-module function: in the normal working state, the ionospheric scintillation risk index determination subsystem is intelligently adjusted to 5min period, the multi-station ionospheric scintillation risk index level is determined, and the satellite data ground receiving station ionospheric scintillation risk level data information and the ionospheric scintillation risk level information prompt are reported; in the early warning working state, the ionospheric scintillation risk index determination subsystem is intelligently adjusted to 2min period, the multi-station ionospheric scintillation risk index level is determined, and the satellite data ground receiving station ionospheric scintillation risk level data information and the ionospheric scintillation risk level information prompt are reported; in the intelligent protection working state, the ionospheric scintillation risk index determination subsystem is intelligently adjusted to 1min period, the multi-station ionospheric scintillation risk index level is determined, and the satellite data ground receiving station ionospheric scintillation risk level data information and the ionospheric scintillation risk level information prompt are reported.

[0129] In a preferred embodiment of the application, step S5: in the intelligent protection working state, intelligently command and dispatch the satellite ground station to perform ionospheric scintillation protection, comprising:

[0130] The intelligent subsystem for real-time intelligent perception of satellite data ground receiving station ionospheric scintillation protection needs sends satellite constellation data, satellite ground receiving station number data, satellite data ground receiving station data reception start time data, satellite data ground receiving station data reception end time data, satellite data ground receiving station geographic information longitude data, and satellite data ground receiving station geographic information latitude data. It identifies whether the satellite is a high-orbit or low-orbit satellite and intelligently determines the idle time period for satellite data reception at each satellite receiving station.

[0131] To address the near-Earth orbit motion characteristics of low-Earth orbit satellites and the limitations on antenna angles and geographical locations of various satellite data ground receiving stations, a frequency switching method for satellite data ground receiving stations is adopted. The ionospheric scintillation integrated protection subsystem automatically initiates the switching of satellite data ground receiving stations from the low-frequency band to the high-frequency band relative to the low-frequency band for data reception, thereby completing the ionospheric scintillation integrated protection.

[0132] In this embodiment of the invention, the ionospheric scintillation integrated protection subsystem, under the intelligent protection working state of the ionospheric scintillation intelligent protection system, intelligently commands and dispatches the satellite ground station to perform ionospheric scintillation protection.

[0133] The ionospheric scintillation integrated protection subsystem intelligently analyzes satellite data from ground receiving stations to assess their ionospheric scintillation protection needs. This analysis is conducted in real-time using satellite constellation data, ground receiving station identification numbers, data reception start and end times, longitude and latitude coordinates. Based on the satellite constellation data FY-X1X2, the system intelligently identifies the satellite's orbital (high or low Earth orbit) type, with even-numbered X1 values ​​indicating high-orbit satellites and odd-numbered X1 values ​​indicating low-orbit satellites. The system also intelligently determines the idle periods for satellite data reception at each receiving station.

[0134] The ionospheric scintillation integrated protection subsystem addresses the near-Earth orbit motion characteristics of low-Earth orbit satellites and the antenna angle and geographical location limitations of each satellite data ground receiving station. It employs a frequency switching method for the satellite data ground receiving station. The subsystem automatically initiates a switch from low-frequency bands (such as L-band) to high-frequency bands (such as Ku-band, Ka-band, etc.) for data reception relative to the low-frequency band, ensuring service continuity and completing the integrated protection against ionospheric scintillation.

[0135] The ionospheric scintillation comprehensive protection subsystem adopts a satellite data ground receiving station main and backup station switching mode in view of the high orbit satellite subsatellite point relative ground static movement characteristics and the angle limitation and geographical position limitation of each satellite data ground receiving station antenna.

[0136] As shown in Figure 2 The embodiment of the present application also provides a system for ionospheric scintillation interference protection in meteorological satellite ground data reception, comprising:

[0137] An acquisition module is configured to acquire satellite receiving task schedules, geographical information data, and ionospheric scintillation index data of a plurality of satellite data ground receiving stations in real time.

[0138] A matching module is configured to match the satellite receiving task schedules and the ionospheric scintillation index data in time and geographical information, and output matched antenna elevation angle, azimuth angle data and ionospheric scintillation index matching data.

[0139] A warning module is configured to perform real-time correlation identification on the elevation angle and azimuth angle data of the satellite receiving station antenna and the matched ionospheric scintillation index elevation angle and azimuth angle data, and generate risk warning information of different levels based on the correlation of the elevation angle and azimuth angle of the satellite receiving station antenna and the ionospheric scintillation index risk.

[0140] An adjustment module is configured to make intelligent decisions based on the risk warning information, and intelligently adjust the ionospheric scintillation risk index identification inspection period according to the intelligent decisions.

[0141] A switching module is configured to intelligently command and dispatch the satellite ground station to perform ionospheric scintillation protection in an intelligent protection working state.

[0142] When applied specifically, the functions and cooperation processes of each subsystem of the ionospheric scintillation interference protection system are as follows:

[0143] I. Real-time intelligent perception subsystem: data acquisition and distribution

[0144] The satellite data ground receiving station ionospheric scintillation protection demand real-time intelligent perception subsystem is the data basis of the entire protection system, and its core function is to acquire and process multi-source data to provide accurate input information for the subsequent subsystems.

[0145] Through the national satellite meteorological center business network, the subsystem can obtain satellite receiving task schedule data of multiple satellite data ground receiving stations in real time, including satellite star mark data, satellite ground receiving station number data, data receiving start time and end time, and other key information. At the same time, the geographical information data of multiple satellite data ground receiving stations is obtained, covering longitude data and latitude data. In addition, the ionospheric scintillation index data is obtained through the national space weather center, including minute-level time data, longitude data, latitude data, etc.

[0146] The subsystem has powerful data processing capability, can intelligently confirm multiple satellite star marks, multiple satellite data ground receiving station numbers and names in seconds, and intelligently extract related satellite receiving task schedules in seconds. It can intelligently analyze the data receiving time window period of multiple satellite data ground receiving stations, as well as the geographical information longitude and latitude data of each receiving station.

[0147] After completing data processing, the real-time intelligent perception subsystem sends satellite star mark data, satellite ground receiving station number data, data receiving start time and end time data, geographical information longitude and latitude data, and minute-level time, longitude, latitude data of ionospheric scintillation index, etc. to the satellite data ground receiving station and ionospheric scintillation index information matching subsystem. At the same time, the satellite star mark data, satellite ground receiving station number data, data receiving start time and end time data are distributed to the ionospheric scintillation protection intelligent decision subsystem to provide basic data support for subsequent data matching and decision analysis.

[0148] II. Information matching subsystem: accurate spatio-temporal information matching

[0149] The satellite data ground receiving station and ionospheric scintillation index information matching subsystem receives data sent by the real-time intelligent perception subsystem, and performs accurate matching of time and geographical information for ionospheric scintillation index in the data receiving time window period of a single or multiple satellite data ground receiving stations.

[0150] The subsystem can intelligently match real-time ionospheric scintillation index data of multiple satellite data ground receiving stations in the data receiving time window period in seconds, and intelligently match the longitude and latitude information of the receiving station and the ionospheric scintillation index. Through a series of complex algorithms and data processing, it intelligently analyzes and outputs the antenna elevation and azimuth data of the satellite receiving station in the data receiving time window period, as well as the corresponding ionospheric scintillation index antenna elevation and azimuth matching data, and the satellite data ground receiving station ionospheric scintillation index matching data.

[0151] After matching, the information matching subsystem sends relevant data to different subsystems. Satellite receiving station data receiving time window period antenna elevation angle data and ionospheric scintillation index antenna elevation angle matching data are sent to the satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem; satellite receiving station data receiving time window period antenna azimuth angle data and ionospheric scintillation index antenna azimuth angle matching data are sent to the satellite receiving station antenna azimuth angle and ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem; satellite data ground receiving station ionospheric scintillation index matching data are sent to the ionospheric scintillation risk index identification subsystem, providing key data for subsequent correlation analysis and risk identification.

[0152] III. Correlation identification subsystem: real-time risk level determination

[0153] (I) Azimuth angle correlation identification subsystem

[0154] The satellite receiving station antenna azimuth angle and ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem focuses on correlation analysis of satellite receiving station antenna azimuth angle data and ionospheric scintillation index antenna azimuth angle data during the satellite receiving station data receiving time window, achieving real-time early warning or alarm system state identification.

[0155] When it is identified that the satellite receiving station data receiving time window period antenna azimuth angle data and ionospheric scintillation index antenna azimuth angle matching data are outside the ±5° interval, it is determined that the ionospheric scintillation risk is low correlation, and low correlation ionospheric scintillation risk information is sent to the ionospheric scintillation protection intelligent decision subsystem; when it is identified within the ±5° interval, it is determined that the correlation is high, and high correlation ionospheric scintillation risk information is sent; when it is identified within the ±2° interval, it is determined that the correlation is extremely high, and extremely high correlation ionospheric scintillation risk information is sent, providing accurate risk level information for the decision subsystem.

[0156] (II) Elevation angle correlation identification subsystem

[0157] The satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem has similar functions to the azimuth angle correlation identification subsystem, and performs correlation analysis on satellite receiving station antenna elevation angle data and ionospheric scintillation index antenna elevation angle data during the satellite receiving station data receiving time window.

[0158] When the satellite receiving station data receiving time window period antenna azimuth data and ionospheric scintillation index antenna azimuth matching data are outside the ±5° interval, send ionospheric scintillation risk low correlation information; within the ±5° interval, send ionospheric scintillation protection risk high correlation information; within the ±2° interval, send ionospheric scintillation protection risk extremely high correlation information, providing risk level information in the pitch angle direction for the decision-making subsystem.

[0159] Four, risk index identification subsystem: risk level comprehensive judgment

[0160] The ionospheric scintillation risk index identification subsystem provides periodic ionospheric scintillation risk index identification for the system-level multiple satellite data ground receiving station ionospheric scintillation protection prediction and early warning tasks.

[0161] (I) Data acquisition and visualization

[0162] Through the satellite data ground receiving station and ionospheric scintillation index information matching subsystem sent satellite data ground receiving station ionospheric scintillation index matching data, provide visual multiple satellite data ground receiving station matching ionospheric scintillation index information data for the operator, facilitate the operator to intuitively understand the ionospheric scintillation situation.

[0163] (II) Risk level determination

[0164] Identify the ionospheric scintillation risk index level of multiple satellite data ground receiving stations within 4 hours: when the satellite data ground receiving station matches the ionospheric scintillation risk index 0.39 and below, identify as extremely low risk, send extremely low risk data information and no need to pay attention to prompt to the ionospheric scintillation protection intelligent decision-making subsystem; index in 0.40-0.59, identify as low risk, send low risk data information and need to pay attention to information prompt; index in 0.60-0.79, identify as high risk, send high risk data information and significant information prompt; index in 0.80-1.00, identify as extremely high risk, send extremely high risk data information and warning information prompt.

[0165] (III) Intelligent adjustment of working state

[0166] According to the ionospheric scintillation intelligent protection system working state data issued by the ionospheric scintillation protection intelligent decision-making subsystem, intelligently adjust the inspection cycle. In the normal working state, the risk index level of multiple stations is determined and relevant information is reported every 5 minutes; in the early warning working state, shorten to 2 minutes; in the intelligent protection working state, further shorten to 1 minute, to ensure that the risk index can be determined timely and accurately under different risk levels.

[0167] Five, intelligent decision-making subsystem: dynamic decision of protection strategy

[0168] The ionospheric scintillation protection intelligent decision subsystem is the core decision unit of the entire protection system, which receives ionospheric scintillation risk correlation information from the satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem, satellite data ground receiving station ionospheric scintillation protection demand real-time intelligent perception subsystem distributed satellite star mark, receiving station number, data receiving time and other data, and ionospheric scintillation risk index identification result of the ionospheric scintillation risk index identification subsystem, and makes intelligent decision.

[0169] (I) Comprehensive research and state determination

[0170] Intelligent comprehensive research and determination of real-time correlation information of satellite receiving station antenna azimuth angle, elevation angle and ionospheric scintillation index azimuth angle, elevation angle, and ionospheric scintillation risk index:

[0171] When the real-time correlation information of antenna azimuth angle, elevation angle and ionospheric scintillation index azimuth angle, elevation angle is low correlation, and the ionospheric scintillation risk is low, the decision of satellite receiving station ionospheric scintillation risk is low, and the command and dispatch ionospheric scintillation intelligent protection system is in normal working state, and the satellite receiving station ionospheric scintillation interference risk information is reported every 5 minutes.

[0172] When the correlation information is high correlation or very high correlation, or the ionospheric scintillation risk index is significant or warning, the decision of satellite receiving station ionospheric scintillation risk is high, and the command and dispatch is in early warning state, and the early warning information is reported every 2 minutes.

[0173] When the correlation information is very high correlation, and the ionospheric scintillation risk index is warning, the decision of satellite receiving station ionospheric scintillation risk is very high, and the command and dispatch is in intelligent protection state, and the early warning information is reported every 1 minute.

[0174] Six, comprehensive protection subsystem: precise implementation of protection measures

[0175] The ionospheric scintillation comprehensive protection subsystem undertakes the important task of intelligent command and dispatch of satellite ground station for ionospheric scintillation protection when the ionospheric scintillation intelligent protection system is in intelligent protection state.

[0176] (I) Data analysis and satellite type identification

[0177] Intelligent analysis of satellite data ground receiving station ionospheric scintillation protection demand real-time intelligent perception subsystem sent satellite star mark data, satellite ground receiving station number data, data receiving start and end time data, and geographic information longitude and latitude data. According to the satellite star mark data FY-X1X2, where X1 is even for high orbit satellite and odd for low orbit satellite, the intelligent identification of satellite high and low orbit type is realized, and the idle period of satellite data receiving of each satellite receiving station is intelligently judged.

[0178] (ii) Differentiated protection measures

[0179] Low-orbit satellite protection: According to the low-orbit satellite near-earth orbit motion characteristics and the angle limitation and geographical position limitation of each satellite data ground receiving station antenna, the satellite data ground receiving station frequency switching mode is adopted. The satellite data ground receiving station is automatically started to switch from low frequency band (such as L band) to high frequency band (such as Ku band, Ka band, etc.) for data reception. Although the high frequency band signal propagation loss is large, it is less affected by ionospheric scintillation. By comprehensively considering the communication distance, transmission power and other factors, the business continuity is realized, and the ionospheric scintillation comprehensive protection is completed.

[0180] High-orbit satellite protection: According to the high-orbit satellite subsatellite point relative to the ground stationary motion characteristics and the angle limitation and geographical position limitation of each satellite data ground receiving station antenna, the satellite data ground receiving station main and backup station switching mode is adopted. The ionospheric scintillation risk of the satellite data ground receiving backup station and the satellite data receiving window period are identified. Under the condition that the backup station meets the data receiving conditions of the affected low-orbit satellite, the satellite data ground receiving main station receiving low-orbit satellite data is suspended, and the satellite data ground receiving backup station is automatically started for data reception. Since the subsatellite point position of the high-orbit satellite is relatively fixed, the geographical position limitation of the ground receiving station is relatively low. Through this redundant design, the safety and continuity of communication are ensured, the business continuity is realized, and the ionospheric scintillation comprehensive protection is completed.

[0181] (iii) Basis for implementing measures

[0182] For satellite communication systems, reasonable selection of communication frequency band can reduce the influence of ionospheric scintillation. High frequency band is less affected than low frequency band. However, due to the real-time position of the satellite orbit and the geographical position limitation of the ground receiving station, the satellite receiving main station switching frequency band is suitable for low-orbit satellites with short data propagation distance between satellite and ground. Redundant design is adopted, such as backup communication link, which is switched to backup link when the main link is severely affected. The switching of satellite main and backup receiving stations is mainly suitable for high-orbit satellites. Due to the long data propagation distance between satellite and ground, the signal propagation loss is large, and the geographical position limitation of the ground receiving station is relatively low.

[0183] Through the close cooperation of the above subsystems, from data acquisition, matching, correlation identification, risk index determination, intelligent decision to the final implementation of protection measures, a complete ionospheric scintillation interference protection system is formed, which can effectively predict and actively avoid ionospheric scintillation interference, and ensure the normal communication and data reception of satellite ground receiving station.

[0184] It should be noted that the system is a system corresponding to the above method, and all implementation manners in the above method embodiment are applicable to this embodiment, and the same technical effects can also be achieved.

[0185] The embodiment of the present application also provides a computing device, comprising: a processor, a memory storing a computer program, when the computer program is run by the processor, the method described above is executed. All implementation manners in the above method embodiment are suitable for this embodiment, and the same technical effects can also be achieved.

Claims

1. A method for protection against ionospheric scintillation interference in meteorological satellite ground data reception, characterized in that, The method comprises: Step S1: Real-time acquisition of satellite receiving task schedule, geographic information data, and ionospheric scintillation index data of multiple satellite data ground receiving stations; Step S2: Time and geographic information matching of the satellite receiving task schedule and ionospheric scintillation index data, output of matched antenna elevation angle, azimuth angle data and ionospheric scintillation index matching data; Step S3: Real-time correlation identification of satellite receiving station antenna elevation angle and azimuth angle data and matched ionospheric scintillation index, elevation angle and azimuth angle data, generation of risk warning information of different levels by comprehensively considering satellite receiving station antenna elevation angle and azimuth angle correlation and ionospheric scintillation index risk; Step S4: Intelligent decision-making based on the risk warning information, intelligent adjustment of ionospheric scintillation risk index identification inspection period according to the intelligent decision-making; Step S5: Intelligent command and dispatch of satellite ground stations for ionospheric scintillation protection in the intelligent protection state.

2. The method for protection against ionospheric scintillation interference in meteorological satellite ground data reception according to claim 1, characterized in that, Step S1: Real-time acquisition of satellite receiving task schedule, geographic information data, and ionospheric scintillation index data of multiple satellite data ground receiving stations, comprising: Step S11: Acquisition of satellite receiving task schedule data of multiple satellite data ground receiving stations through a satellite meteorological center service network, including satellite satellite marker data, satellite ground receiving station number data, data receiving start time and end time; Step S12: Acquisition of geographic information data of multiple satellite data ground receiving stations, including longitude data and latitude data, and intelligent analysis of antenna elevation angle and azimuth angle of each receiving station, and giving the corresponding relationship of the antenna elevation angle and azimuth angle with nearby ionospheric scintillation observation stations; Step S13: Real-time acquisition of ionospheric scintillation index data through a space weather center, including minute-level time data, longitude data, latitude data, and corresponding ionospheric scintillation index antenna elevation angle and azimuth angle matching data; Step S14: Second-level intelligent matching of the satellite receiving task schedule, geographic information data, and ionospheric scintillation index data, generation of multi-station space environment real-time ionospheric scintillation data.

3. The method for protection against ionospheric scintillation interference in meteorological satellite ground data reception according to claim 2, characterized in that, Step S2: Time and geographic information matching of the satellite receiving task schedule and ionospheric scintillation index data, output of matched antenna elevation angle, azimuth angle data and ionospheric scintillation index matching data, comprising: Step S21: Second-level intelligent matching of data receiving start time and end time of multiple satellite data ground receiving stations based on a satellite receiving task time window period, extraction of real-time ionospheric scintillation index data of each receiving station corresponding to the time window period; Step S22: Intelligent matching of longitude and latitude corresponding relationship of each satellite data ground receiving station and ionospheric scintillation index according to longitude and latitude information in the geographic information data, generation of satellite receiving station and ionospheric scintillation index geographic information association data; Step S23: Analysis and output of satellite receiving station antenna elevation angle prediction value, azimuth angle prediction value, and corresponding ionospheric scintillation index antenna elevation angle matching data and azimuth angle matching data in the data receiving time window period in combination with the time window period and geographic information association data.

4. The method for protection against ionospheric scintillation interference in meteorological satellite ground data reception according to claim 3, characterized in that, Step S22: According to the longitude and latitude information in the geographic information data, intelligently match the longitude and latitude corresponding relationship of each satellite data ground receiving station and ionospheric scintillation index, generate satellite receiving station and ionospheric scintillation index geographic information association data, including: Step S221: Based on the longitude data of the satellite data ground receiving station and the longitude data of the ionospheric scintillation index, dynamic range matching is performed to determine whether the longitude deviation of the receiving station and the ionospheric scintillation region is within the preset error range; Step S222: Based on the latitude data of the satellite data ground receiving station and the latitude data of the ionospheric scintillation index, dynamic range matching is performed to determine whether the latitude deviation of the receiving station and the ionospheric scintillation region is within the preset error range; Step S223: If the longitude deviation and latitude deviation are within the error range, generate satellite receiving station and ionospheric scintillation index geographic information association data, including receiving station number, matched scintillation index longitude and latitude range, and matching timestamp.

5. The method for protection against ionospheric scintillation interference in meteorological satellite ground data reception according to claim 4, characterized in that, Step S3: Real-time correlation identification is performed on the elevation angle and azimuth angle data of the satellite receiving station antenna and the matched ionospheric scintillation index elevation angle and azimuth angle data, and different levels of risk warning information are generated by comprehensively considering the correlation of the satellite receiving station antenna elevation angle and azimuth angle and the ionospheric scintillation index risk, including: During the satellite receiving station data receiving time window, the satellite receiving station antenna azimuth angle data and the ionospheric scintillation index antenna azimuth angle data are analyzed for correlation, and the system state identification for real-time warning or alarm is performed; The satellite receiving station antenna elevation angle and ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem analyzes the correlation between the satellite receiving station antenna azimuth angle data and the ionospheric scintillation index antenna azimuth angle data during the satellite receiving station data receiving time window, and performs real-time warning or alarm state identification; When the satellite receiving station antenna azimuth angle data and the ionospheric scintillation index antenna azimuth angle matching data during the satellite receiving station data receiving time window are outside the ±5° interval, the satellite receiving station antenna azimuth angle and ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem sends ionospheric scintillation risk low correlation information to the ionospheric scintillation protection intelligent decision subsystem; When the satellite receiving station antenna azimuth angle data and the ionospheric scintillation index antenna azimuth angle matching data during the satellite receiving station data receiving time window are within the ±5° interval, the satellite receiving station antenna azimuth angle and ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem sends ionospheric scintillation risk high correlation information to the ionospheric scintillation protection intelligent decision subsystem; When the antenna azimuth angle data of the satellite receiving station in the data receiving time window period matches the antenna azimuth angle matching data of the ionospheric scintillation index within a range of ±2°, the satellite receiving station antenna azimuth angle and ionospheric scintillation index antenna azimuth angle real-time correlation identification subsystem sends ionospheric scintillation risk extremely high correlation information to the ionospheric scintillation protection intelligent decision subsystem.

6. The method for protection against ionospheric scintillation interference in meteorological satellite ground data reception according to claim 5, characterized in that, Step S4: Based on the risk warning information, intelligent decision-making is performed, including: The ionospheric scintillation protection intelligent decision subsystem receives the ionospheric scintillation risk correlation information sent by the satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem; the ionospheric scintillation protection intelligent decision subsystem receives the ionospheric scintillation risk correlation information from the satellite receiving station antenna elevation angle and ionospheric scintillation index antenna elevation angle real-time correlation identification subsystem, the satellite data ground receiving station ionospheric scintillation protection demand real-time intelligent perception subsystem distributes the satellite beacon, receiving station number, data receiving time data, and the ionospheric scintillation risk identification result of the ionospheric scintillation risk index identification subsystem, and performs intelligent decision-making; The ionospheric scintillation protection intelligent decision subsystem intelligently comprehensively analyzes the satellite receiving station antenna azimuth angle, elevation angle, and ionospheric scintillation index azimuth angle, elevation angle real-time correlation information and the ionospheric scintillation risk index; when the antenna azimuth angle, elevation angle and ionospheric scintillation index azimuth angle, elevation angle real-time correlation information is low correlation, and the ionospheric scintillation risk is low, it is decided that the ionospheric scintillation risk of the satellite receiving station is low, the ionospheric scintillation intelligent protection system is in a normal working state, and the ionospheric scintillation interference risk information of the satellite receiving station is reported every 5 minutes; when the antenna azimuth angle, elevation angle and ionospheric scintillation index azimuth angle, elevation angle real-time correlation information is high correlation or extremely high correlation, or the ionospheric scintillation risk index is significant or warning, it is decided that the ionospheric scintillation risk of the satellite receiving station is high, the ionospheric scintillation intelligent protection system is in an early warning working state, and the ionospheric scintillation interference risk warning information of the satellite receiving station is reported every 2 minutes; When the antenna azimuth angle, elevation angle and ionospheric scintillation index azimuth angle, elevation angle real-time correlation information is extremely high correlation, and the ionospheric scintillation risk index is warning, it is decided that the ionospheric scintillation risk of the satellite receiving station is extremely high, and the ionospheric scintillation intelligent protection system is in an intelligent protection working state, and the ionospheric scintillation interference risk warning information of the satellite receiving station is reported every 1 minute.

7. The method for protection against ionospheric scintillation interference in meteorological satellite ground data reception according to claim 6, characterized in that, According to the intelligent decision, the ionospheric scintillation risk index identification inspection cycle is intelligently adjusted, including: Through the satellite data ground receiving station and ionospheric scintillation index information matching subsystem, the satellite data ground receiving station ionospheric scintillation index matching data is sent to provide multiple satellite data ground receiving station matching ionospheric scintillation index information data for the operator; The ionospheric scintillation risk index level of multiple satellite data ground receiving stations within 4 hours is identified to provide multiple satellite space environment low-energy particle surface charging decision results for the operator; In the normal working state, the ionospheric scintillation risk index identification subsystem intelligently adjusts the ionospheric scintillation risk index identification subsystem to determine the ionospheric scintillation risk index level of multiple stations at a 5-minute cycle, and reports the ionospheric scintillation risk level data information of the satellite data ground receiving station to the satellite data ground receiving station, and provides the ionospheric scintillation risk level information prompt; in the early warning working state, the ionospheric scintillation risk index identification subsystem intelligently adjusts the ionospheric scintillation risk index identification subsystem to determine the ionospheric scintillation risk index level of multiple stations at a 2-minute cycle, and reports the ionospheric scintillation risk level data information of the satellite data ground receiving station to the satellite data ground receiving station, and provides the ionospheric scintillation risk level information prompt; in the intelligent protection working state, the ionospheric scintillation risk index identification subsystem intelligently adjusts the ionospheric scintillation risk index identification subsystem to determine the ionospheric scintillation risk index level of multiple stations at a 1-minute cycle, and reports the ionospheric scintillation risk level data information of the satellite data ground receiving station to the satellite data ground receiving station, and provides the ionospheric scintillation risk level information prompt.

8. The method for protection against ionospheric scintillation interference in meteorological satellite ground data reception according to claim 7, characterized in that, Step S5: In the intelligent protection working state, intelligently command and dispatch the satellite ground station to perform ionospheric scintillation protection, including: Intelligently analyzing the satellite star data sent by the satellite data ground receiving station ionospheric scintillation protection demand real-time intelligent perception subsystem, satellite ground receiving station number data, satellite data ground receiving station data receiving start time data, satellite data ground receiving station data receiving end time data, satellite data ground receiving station geographic information longitude data, satellite data ground receiving station geographic information latitude data, identifying whether the satellite is a high-orbit satellite or a low-orbit satellite, intelligently judging the satellite data receiving idle period of each satellite receiving station; Based on the low-orbit satellite near-earth orbit motion characteristics and the antenna angle limitation and geographical position limitation of each satellite data ground receiving station, the ionospheric scintillation comprehensive protection subsystem automatically starts the satellite data ground receiving station to switch from low frequency to high frequency for data reception, and completes the ionospheric scintillation comprehensive protection.

9. A system for protection against ionospheric scintillation interference in meteorological satellite ground data reception, the system implementing the method of any one of claims 1 to 8, characterized in that, The method comprises the following steps: An acquisition module is configured to acquire, in real time, satellite receiving task schedules, geographic information data, and ionospheric scintillation index data of multiple satellite data ground receiving stations; A matching module is configured to match the satellite receiving task schedules with the ionospheric scintillation index data in terms of time and geographic information, and output matched antenna elevation angle and azimuth angle data and ionospheric scintillation index matching data; An early warning module is configured to perform real-time correlation identification on the elevation angle and azimuth angle data of the satellite receiving station antenna and the matched ionospheric scintillation index elevation angle and azimuth angle data, and generate risk early warning information of different levels based on the correlation of the elevation angle and azimuth angle of the satellite receiving station antenna and the ionospheric scintillation index risk; An adjustment module is configured to make an intelligent decision based on the risk early warning information, intelligently adjust the ionospheric scintillation risk index identification inspection cycle according to the intelligent decision, and intelligently command and dispatch the satellite ground station to perform ionospheric scintillation protection in the intelligent protection working state. The method comprises the following steps:

10. A computing device, comprising: One or more processors; A storage device is configured to store one or more programs, and when the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 8. ​

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