Electromagnetic space diagram design and implementation system and method

Abstract

The invention relates to the technical field of electromagnetic situation visualization, and particularly discloses an electromagnetic space diagram design and implementation system and method, and the system comprises a space-based satellite electromagnetic spectrum surveying and mapping module, a surveying and mapping data processing module, and a data product generation module. The space-based satellite electromagnetic spectrum surveying and mapping module is used for acquiring global electromagnetic spectrum information and surveying and mapping the global electromagnetic spectrum information to obtain surveying and mapping data; the surveying and mapping data processing module is used for storing surveying and mapping data in a database in a grid division manner; preprocessing the surveying and mapping data to obtain standard electromagnetic spectrum data; screening required electromagnetic spectrum data from the standard electromagnetic spectrum data according to application requirements; and the data product generation module is used for generating an electromagnetic space diagram based on the required electromagnetic spectrum data, and visualizing and applying the electromagnetic space diagram. According to the system, multi-level, multi-dimensional and multi-scale expression of electromagnetic spectrum surveying and mapping data is realized, and organization and application of global electromagnetic spectrums are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic situation visualization, and in particular to an electromagnetic space diagram design and implementation system and method. Background Art

[0002] With the rapid development of space-based low-orbit communication technology and electromagnetic spectrum data processing technology, especially the new space-based communication technology has reduced the latency and cost of global information transmission, which has also brought new challenges to spectrum management and orderly spectrum utilization. Mapping the distribution of electromagnetic spectrum in surface space through low-orbit electromagnetic mapping satellite constellations, combining ground targets and geographic information to generate electromagnetic space maps, is the key to cognitive electromagnetic space planning spectrum resources. At present, the research on global and large-scale spectrum maps has made significant progress, and the scope of attention has spanned from a single target to regional space. Compared with large satellite platforms in synchronous orbit, low-orbit satellite constellations have short signal transmission distances and low latency, and do not require high receiving capabilities from ground antennas, which can achieve a higher cost-effectiveness ratio.

[0003] At present, foreign electromagnetic spectrum mapping satellite constellations and systems have achieved the construction of low-orbit constellations and the release of related data products, and the second-generation system is also under development. my country currently has a relatively scarce design and implementation system with pre-research capabilities; at present, ground-based and air-based electromagnetic data visualization platforms and systems have been widely used, but their capabilities only exist in small-scale mapping or detailed description, and they cannot achieve long-term, large-scale electromagnetic mapping and visualization capabilities. Space systems (i.e. constellation systems in space) rely on their "high frontier" advantages to meet current development needs.

[0004] Compared with the above background, there are several concerns in the design and implementation of the electromagnetic space map system: First, the amount of spectrum data collected by the electromagnetic spectrum mapping satellite constellation is extremely large and the redundancy is extremely high, which requires effective data processing and analysis capabilities; second, there are large differences in the distribution density of electromagnetic spectrum data, which is much higher in urban areas than in suburban areas, requiring a multi-level and multi-dimensional complex electromagnetic environment visualization system; third, the establishment of space-based communication networks has put forward higher requirements for the spatial description of the electromagnetic spectrum, and an effective means of describing the global electromagnetic space situation is needed; in summary, there is an urgent need for an electromagnetic space representation and visualization system based on the space-based spectrum mapping platform to analyze the spatial spectrum situation. Summary of the invention

[0005] In response to the above problems, that is, in order to achieve effective representation and application of electromagnetic space, the first purpose of the present invention is to provide an electromagnetic space map design and implementation system, which acquires and maps electromagnetic data through a space-based satellite electromagnetic spectrum mapping module, thereby realizing global, wide-band multiple coverage data acquisition; and performs data processing through a mapping data processing module, and realizes multi-level, multi-dimensional, and multi-scale expression of electromagnetic spectrum mapping data through a data product generation module, thereby realizing the organization and application of the global electromagnetic spectrum.

[0006] The second object of the present invention is to provide a method for designing and implementing an electromagnetic space diagram.

[0007] The first technical solution adopted by the present invention is: an electromagnetic space map design and implementation system, including a space-based satellite electromagnetic spectrum mapping module, a mapping data processing module and a data product generation module;

[0008] The space-based satellite electromagnetic spectrum mapping module is used to obtain global electromagnetic spectrum information, and map the global electromagnetic spectrum information to obtain mapping data; and transmit the mapping data to the mapping data processing module;

[0009] The surveying and mapping data processing module is used to receive the surveying and mapping data transmitted by the space-based satellite electromagnetic spectrum surveying and mapping module, and store the surveying and mapping data in a database in a grid-divided manner; pre-process the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; and filter out required electromagnetic spectrum data from the standard electromagnetic spectrum data according to application requirements, and transmit the required electromagnetic spectrum data to the data product generation module;

[0010] The data product generation module is used to receive required electromagnetic spectrum data, generate an electromagnetic space map based on the required electromagnetic spectrum data; and visualize and apply the electromagnetic space map.

[0011] Preferably, the space-based satellite electromagnetic spectrum mapping module transmits the mapping data through the following steps, including:

[0012] S11, determine the topology and link status of the constellation and the ground site, construct a three-dimensional matrix of data transmission time availability, and obtain the data transmission time series between the satellite and the ground site at any time;

[0013] The three-dimensional matrix of data transmission time availability is expressed by the following formula:

[0014] Q=[t,S m ,S n ]

[0015] Where Q is the three-dimensional matrix of data transmission time availability; t is the time; S m Indicates the ground station number; Sn Indicates the satellite number;

[0016] S12. Based on the requirements and constraints, clarify the data downlink requirements of the satellite, thereby determining the priority of the data service requirements; and establish a priority model and a satellite-ground site access priority sequence model based on the data service demand priority, to obtain a data transmission priority sequence and a ground site access priority sequence;

[0017] The priority model is expressed by the following formula:

[0018] P I =ln(I1I2…I n )+1

[0019] Where P I I is the data transmission priority sequence; n It represents the importance value of the factor, and its value range is [0,10], where n is the number of factors considered;

[0020] The satellite-ground site access priority sequence model is expressed by the following formula:

[0021]

[0022] Where P Final is the final access priority; P Base is the basic priority; F j is the dynamic adjustment factor; j is the number of adjustment factors;

[0023] S13, determining a transmission path and site topology based on a ground site access priority sequence, a data transmission time sequence, and a data transmission priority sequence;

[0024] S14. Determine whether there is data loss or distortion during the transmission process. If so, adjust the data transmission sequence to the highest priority and retransmit; if not, maintain the original transmission sequence.

[0025] Preferably, the space-based satellite electromagnetic spectrum mapping module includes a space layer and a first ground layer;

[0026] The space layer is used to obtain global electromagnetic spectrum information through satellites, and to map the global electromagnetic spectrum information to obtain mapping data; and to transmit the mapping data to a mapping data processing module;

[0027] The first ground layer is used for tracking, measuring, telemetry and communication with satellites in the space layer.

[0028] Preferably, the surveying and mapping data processing module includes a second ground layer and a data layer;

[0029] The second ground layer is used for spatial position matching, resolution matching, geographic information fusion of satellite data and ground targets, and receiving downlinked surveying and mapping data and forwarding it to the data layer;

[0030] The data layer is used to pre-process the surveying and mapping data to obtain standard electromagnetic spectrum data; and to analyze the standard electromagnetic spectrum data to filter out the required electromagnetic spectrum data.

[0031] Preferably, the data layer includes a database, a data preprocessing unit, a data analysis unit, and a security and privacy protection unit;

[0032] The data preprocessing unit is used to receive surveying and mapping data, and store the surveying and mapping data in a database in a grid-divided manner; and perform format unification and data storage, correction and standardization, data interpolation and resampling, data cleaning, time synchronization and registration on the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data;

[0033] The data analysis unit is used to filter out required electromagnetic spectrum data from standard electromagnetic spectrum data according to application requirements;

[0034] The security and privacy protection unit is used to set data access permissions and data tracking mechanisms, and encrypt data and user privacy.

[0035] Preferably, the data product generation module includes a data mapping unit, a data parsing unit, an application interface unit, a human-computer interaction, a visualization layer and an application layer;

[0036] The data mapping unit is used to map the required electromagnetic spectrum data to the surface space, mark the geographical location and the usage of the specific frequency range existing around the airspace above it in the surface space, and obtain an electromagnetic space map; transmit the electromagnetic space map to the visualization layer for visualization;

[0037] The visualization layer is used to visualize the electromagnetic space map;

[0038] The application layer is used to apply the visualization data in corresponding application scenarios;

[0039] The data parsing unit is used to decode, verify and format data information when exchanging data information between different systems or applications in the visualization layer;

[0040] The application interface unit is used to define the communication rules and protocols between different software systems in the visualization layer;

[0041] The human-computer interaction is used to receive touch or voice commands input by the user, and to design a visual display interface and an interaction process based on the touch or voice commands.

[0042] Preferably, the visualization layer includes a real-time data visualization platform, a multi-dimensional electromagnetic space display, a three-dimensional visualization tool, and a customized report and export unit.

[0043] Preferably, the application layer includes a national security monitoring unit, a spectrum resource management unit, a shipping monitoring unit and an important target survey unit.

[0044] Preferably, the data product generation module performs the following operations:

[0045] S31. Determine data product requirements based on user needs, and design data transmission architecture, data transmission protocol and data format; the data product requirements include key indicators, data update frequency, and interactivity requirements;

[0046] S32. Analyze and map the required electromagnetic spectrum data to obtain an electromagnetic space map; and develop data interfaces according to different visualization platforms and data reporting platforms;

[0047] Based on the data transmission architecture, data transmission protocol and data format, the electromagnetic space diagram is transmitted to different visualization tools and platforms through various data interfaces for visualization;

[0048] S33. Obtain application requirements, design a visualization interface based on the application requirements, and apply the electromagnetic space diagram in corresponding application scenarios based on the visualization interface.

[0049] The second technical solution adopted by the present invention is: a method for designing and implementing an electromagnetic space diagram based on the system described in the first technical solution, comprising the following steps:

[0050] S100: Acquire global electromagnetic spectrum information, and map the global electromagnetic spectrum information to obtain mapping data;

[0051] S200: storing the surveying and mapping data in a database in a grid-divided manner; preprocessing the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; and filtering required electromagnetic spectrum data from the standard electromagnetic spectrum data according to application requirements;

[0052] S300: Generate an electromagnetic space map based on the required electromagnetic spectrum data; and visualize and apply the electromagnetic space map.

[0053] Beneficial effects of the above technical solution:

[0054] (1) The electromagnetic space map design and implementation system disclosed in the present invention acquires electromagnetic data and maps through a space-based satellite electromagnetic spectrum mapping module, thereby realizing global, wide-band, multiple coverage data acquisition; and performs data processing through a mapping data processing module, and realizes multi-level, multi-dimensional, and multi-scale expression of electromagnetic spectrum mapping data through a data product generation module, thereby realizing the organization and application of the global electromagnetic spectrum; in particular, it is aimed at space-based satellite electromagnetic spectrum mapping and spectrum situation generation applications.

[0055] (2) The present invention can support the next step of the construction of a space-based electromagnetic spectrum mapping system by systematizing the space-based electromagnetic spectrum mapping process; it can transform the traditional ground-based and air-based electromagnetic spectrum mapping methods into a closed-loop link of satellite-ground station-data center-data product-user, and provide a feasible template for the next step of the construction of an electromagnetic spectrum mapping constellation system.

[0056] (3) Compared with the prior art, the present invention ultimately applies data products to related fields rather than just visualization. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic diagram of the structure of an electromagnetic space diagram design and implementation system provided by one embodiment of the present invention;

[0058] Figure 2 A hierarchical schematic diagram of an electromagnetic space diagram design and implementation system provided for one embodiment of the present invention. DETAILED DESCRIPTION

[0059] The following detailed description of the embodiments of the present invention is further described in detail in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the preferred embodiments described, and the scope of the present invention is defined by the claims.

[0060] In the description of the present invention, it should be noted that, unless otherwise specified, “plurality” means two or more than two; the terms “first”, “second”, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0061] Embodiment 1

[0062] like Figure 1As shown, an embodiment of the present invention provides an electromagnetic space map design and implementation system, including a space-based satellite electromagnetic spectrum mapping module, a mapping data processing module, and a data product generation module; the space-based satellite electromagnetic spectrum mapping module, the mapping data processing module, and the data product generation module correspond to the surface space, the information space (i.e., non-physical digital space, such as data, images, programs, etc.), and the application space respectively;

[0063] The space-based satellite electromagnetic spectrum mapping module is used as a source of electromagnetic data to obtain global electromagnetic spectrum information, and to map the global electromagnetic spectrum information to obtain mapping data; and to transmit the mapping data to the mapping data processing module;

[0064] The surveying and mapping data processing module is used to receive the surveying and mapping data transmitted by the space-based satellite electromagnetic spectrum surveying and mapping module, and store the surveying and mapping data in a database in a grid-divided manner; pre-process the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; and filter out required electromagnetic spectrum data from the standard electromagnetic spectrum data according to application requirements, and transmit the required electromagnetic spectrum data to the data product generation module;

[0065] The data product generation module is used to receive required electromagnetic spectrum data, generate an electromagnetic space map based on the required electromagnetic spectrum data; and visualize and apply the electromagnetic space map.

[0066] like Figure 2 As shown, the electromagnetic space map design and implementation system is divided into a space layer, a first ground layer, a second ground layer, a data layer, a data mapping unit, a data parsing unit, an application interface unit, a human-computer interaction, a logic control unit, a visualization layer and an application layer, wherein the space-based satellite electromagnetic spectrum mapping module includes a space layer and a first ground layer, the mapping data processing module includes a second ground layer and a data layer, and the data product generation module includes a data mapping unit, a data parsing unit, an application interface unit, a human-computer interaction, a logic control unit, a visualization layer and an application layer.

[0067] (1) Space-based satellite electromagnetic spectrum mapping module;

[0068] The space-based satellite electromagnetic spectrum mapping module includes a space layer and a first ground layer; the space layer is used to obtain global electromagnetic spectrum information through satellites, and map the global electromagnetic spectrum information to obtain mapping data; and transmit the mapping data to the mapping data processing module;

[0069] The first ground layer is used to track, measure, telemeter and communicate with satellites in the space layer, so as to realize control and communication with the satellites.

[0070] 1) Space layer;

[0071] The space layer includes sensor payloads, satellite platforms, and constellation layouts;

[0072] The sensor payload is used to obtain global electromagnetic spectrum information; a wideband receiver is integrated in the sensor payload, which can cover the electromagnetic spectrum range from very low frequency (VLF) to microwave, and realize full-band monitoring; that is, a high-sensitivity and high-bandwidth spectrum sensing payload is selected in the sensor payload, and the antenna beam angle is a wide beam for rapid scanning over a large range, and a narrow beam for precise mapping of a fixed point; and an intersatellite laser communication payload is used as the carried payload, and intersatellite communication adopts laser communication to realize real-time transmission of a high amount of data;

[0073] The satellite platform establishes a constellation of multiple low-orbit satellites equipped with high-sensitivity, high-bandwidth spectrum sensing payloads and inter-satellite laser communication payloads (i.e., a space-based electromagnetic spectrum mapping satellite constellation); the satellite platform selects standardized micro-satellites as payload carrying platforms; the constellation is used to map the global electromagnetic spectrum information obtained by the sensor payload to obtain mapping data, and to mark the mapping data with relevant spatiotemporal information to achieve electromagnetic spectrum situational awareness, and to transmit the mapping data to ground stations on the second ground layer;

[0074] The constellation layout adopts multiple orbital planes to arrange satellites to ensure global coverage, while taking into account revisit period, observation efficiency and data transmission requirements; for example, the orbit altitude in the constellation layout is set to 500 to 800 kilometers, and a hybrid orbit design is adopted, including polar orbits (inclination 89 degrees) and medium-inclination orbits (inclination 60 degrees).

[0075] The space-based satellite electromagnetic spectrum mapping module defines the constellation's orbital design, data source, data format and related data interface, and transmits the mapping data to ground stations for related data analysis and processing.

[0076] 2) the first ground floor;

[0077] The first ground layer includes a constellation system measurement and control site, which is used to track, measure, telemeter and communicate with the satellite to achieve control and communication with the satellite.

[0078] The space-based satellite electromagnetic spectrum mapping module transmits mapping data to the mapping data processing module (i.e., the space-based electromagnetic spectrum mapping satellite constellation transmits the mapping data to the ground station), including:

[0079] S11, determine the topology and link status of the constellation and the ground site, construct a three-dimensional matrix of data transmission time availability, and obtain the data transmission time series between the satellite and the ground site at any time;

[0080] The three-dimensional matrix of data transmission time availability is expressed by the following formula:

[0081] Q=[t,S m ,S n ]

[0082] Where Q is the three-dimensional matrix of data transmission time availability; t is the time; S m Indicates the ground station number; S n Indicates the satellite number.

[0083] Time series needs a benchmark, which is measured here by relative time within a period of time; among them, absolute time refers to the unified time of the world, and relative time takes the starting time as time 0; that is, the time series is confirmed based on the starting and ending times of relative time.

[0084] S12, determining requirements and constraints, clarifying the data downlink requirements of the satellite, including data volume, delay limit, transmission rate, etc., so as to determine the priority of data service requirements; and establishing a priority model and a satellite-ground site access priority sequence model based on the data service demand priority, to obtain a data transmission priority sequence and a ground site access priority sequence;

[0085] The priority model is expressed by the following formula:

[0086] P I =ln(I1I2…I n )+1

[0087] Where P I I is the data transmission priority sequence; n It represents the importance of factors, and its value is [0,10], where n is the number of factors considered.

[0088] The satellite-ground site access priority sequence model is expressed by the following formula:

[0089]

[0090] Where P Final is the final access priority; P Base is the basic priority; F j is the dynamic adjustment factor; j is the number of adjustment factors.

[0091] P Base =w1·D+w2·L+w3·T

[0092] F j =-w4··(U current -U optimal )

[0093] Among them, P Baseis the basic priority; D is the estimated minimum distance between ground station i and the satellite; L is the quantitative value of the data demand level (low, medium, high) of ground station i; T is the urgency level (0 is non-urgent, 1 is urgent); w1, w2, w3, w4 represent the weight coefficients of each factor, which are adjusted according to actual needs to balance various influences; U current is the utilization ratio of the satellite’s current link, U optimal is the preset ideal link utilization.

[0094] S13, determining a transmission path and site topology based on a ground site access priority sequence, a data transmission time sequence, and a data transmission priority sequence;

[0095] Because the satellite constellation may connect to more than one ground station during the data transmission process, it is necessary to determine the transmission path and site topology based on the ground station access priority sequence, data transmission time sequence and data transmission priority sequence, including:

[0096] According to the ground station access priority sequence, data transmission time sequence and data transmission priority sequence, use graph theory algorithms (such as Dijkstra and A* algorithms) to find the optimal or suboptimal transmission path during the time when the satellite and ground station are visible together, evaluate the cost and benefit of each path, and make priority trade-offs;

[0097] Dynamically adjust transmission plans and path selection based on real-time conditions, and determine transmission paths and site topology.

[0098] S14. Determine whether there is data loss or distortion during the transmission process. If so, adjust the data transmission sequence to the highest priority for retransmission; if not, maintain the original transmission sequence.

[0099] (2) Surveying and mapping data processing module;

[0100] The surveying and mapping data processing module includes a second ground layer and a data layer; the surveying and mapping data processing module receives the downlink data from the satellite in the space layer in the form of a ground station and stores it in the database of the data layer in a gridded manner, pre-processes the satellite downlink data (i.e., surveying and mapping data), removes noise and interference source information, obtains standard electromagnetic spectrum data, and then analyzes the standard electromagnetic spectrum data to filter out the required electromagnetic spectrum data, thereby realizing the organization, reading, and transmission management of global electromagnetic data; the analysis and screening performed by the data analysis unit mainly rely on data mining related technologies.

[0101] 1) The second ground floor;

[0102] The second ground layer includes spatial position matching, resolution matching, geographic information fusion and data transceiver sites, which are used for spatial position matching, resolution matching, geographic information fusion of satellite data and ground targets, as well as receiving surveying and mapping data transmitted by satellites and forwarding them to the data layer. The second ground layer includes virtual surface terrain data and real data transceiver sites.

[0103] The spatial position matching is used to match the satellite scanning position data and the ground spatial position data to ensure that the satellite data and the spatial position of the ground target are accurately matched, which requires high-quality spatial coordinate conversion and alignment in the data preprocessing stage; considering the influence of factors such as the earth's curvature and terrain undulations, it may be necessary to use a high-precision DEM (digital elevation model) for terrain correction;

[0104] Resolution matching means that the resolution (spatial, temporal or spectral resolution) of satellite data should match the actual scale of ground targets. If necessary, data upsampling or downsampling should be performed to ensure that the clarity of details meets the analysis requirements.

[0105] The geographic information fusion is used to classify the surface cover, automatically identify key land features (such as buildings, vegetation, water bodies, etc.), and associate the electromagnetic environment with ground targets for systematic analysis using geographic information systems (GIS) and machine learning techniques;

[0106] The data transceiver sites refer to widely distributed ground sites that are responsible for receiving the surveying and mapping data transmitted by satellites and forwarding them to the data layer.

[0107] The second ground layer downloads the surveying and mapping data to the database of the data layer, thereby reducing the pressure on onboard processing.

[0108] 2) Data layer;

[0109] The data layer includes a database, a data preprocessing unit, a data analysis unit, and a security and privacy protection unit, which are used to preprocess the surveying and mapping data to obtain standard electromagnetic spectrum data; and analyze the standard electromagnetic spectrum data to filter out the required electromagnetic spectrum data; since the ground station received data in the second ground layer may be distorted and lost, the received data cannot be used directly; therefore, the above situation needs to be solved through data cleaning and data fusion through the data layer;

[0110] Among them, the data preprocessing unit is used to receive the surveying and mapping data transmitted by the space-based satellite electromagnetic spectrum mapping module, and store the surveying and mapping data in a database in a gridded manner; and to unify the format and data storage, correction and standardization, data interpolation and resampling, data cleaning, time synchronization and alignment of the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; through the data preprocessing unit, noise removal, error correction, format unification and data quality improvement are achieved to ensure the accuracy and reliability of subsequent analysis, which is conducive to improving the accuracy and effectiveness of subsequent data analysis.

[0111] The data analysis unit is used to filter out the required electromagnetic spectrum data from the standard electromagnetic spectrum data according to the application requirements generated by the user based on the application scenario; the requirements generated by the user based on the feedback of the specific application scenario selected by the application layer are the application requirements; the application requirements come from the application layer, the application layer is then transmitted to the visualization layer, and then from the visualization layer to the data layer; the application requirements refer to the application requirements generated according to data visualization and data reporting. For example, if the application requirement is that the visualization layer needs to generate a three-dimensional spectrum diagram, it is necessary to call appropriate data for processing;

[0112] The data analysis unit has established an electromagnetic spectrum mapping big data processing framework (i.e., a task scheduling and management big data processing framework) and an AI-assisted analysis sub-unit. For example, a distributed computing framework is used to build a data processing pipeline to achieve rapid data warehousing, efficient storage, parallel processing, and intelligent analysis to meet the needs of large-scale data processing, integrate machine learning and deep learning models, and develop special software modules for automatic identification of electromagnetic signal types, detection of abnormal events, and prediction of electromagnetic environment trends.

[0113] The security and privacy protection unit is used to set data access rights and data tracking mechanisms, encrypt data and user privacy, and ensure the security of data transmission and storage; that is, strictly follow data encryption standards in software design and implementation to ensure the security of data transmission and storage; for sensitive data, implement strict access rights control and audit tracking mechanisms to protect user privacy and national security.

[0114] The data layer stores the surveying and mapping data in a database in a grid-divided manner (e.g., in csv format), that is, based on a three-dimensional grid, combined with surveying and mapping data with spatiotemporal information, the surveying and mapping data is matched with the corresponding grid-divided, specifically including:

[0115] S21, determine the spatial position matching and resolution matching, and determine the sampling granularity ξ of the surveying and mapping data;

[0116] ξ=min(Δlon,Δlat,Δh), Δlon refers to the grid longitude interval, Δlat refers to the grid latitude interval, Δh refers to the grid height, and the final sampling granularity is determined as the minimum value of the three;

[0117] S22, determine the space division rules;

[0118] A method of dividing the surface space into grids and encoding GeoSOT-3D is selected. The full name is "Global Longitude and Latitude Grid of 2n and Integer One-Dimensional Arrays". The idea of ​​the division is to expand the longitude range to [-256°, 256°], the latitude to [-256°, 256°], and the height from the ground upward [0km, 50638.82697km] is mapped to [0°, 512°]. The surface space division process is the octree division of the division space, which can make the surface space division grid have unique coding, multi-scale and easy storage characteristics.

[0119] S23, calibrating the sampling granularity of surveying and mapping data and the surface space division granularity (i.e., the cube side length of the grid in the surface space division rule) so that the sampling granularity ξ is consistent with the cube side length of the surface space division grid; and encoding the sampling data and storing it in the database.

[0120] (3) Data product generation module;

[0121] The data product generation module is used as a conversion application for electromagnetic spectrum data, including data mapping unit, data parsing unit, application interface unit, human-computer interaction, logic control unit, visualization layer and application layer;

[0122] The data mapping unit is used to map the required electromagnetic spectrum data to the surface space, mark the geographical location and the usage of the specific frequency range existing around the airspace above it in the surface space, and obtain an electromagnetic space map; transmit the electromagnetic space map to the visualization layer for visualization; the electromagnetic space map is divided into static and dynamic mappings, which respectively represent the spectrum occupancy at a certain point in time and the spectrum usage dynamics that change over time.

[0123] The visualization layer is used to visualize the electromagnetic space map.

[0124] The application layer is used to apply the visualized data in corresponding application scenarios.

[0125] When exchanging data information between different systems or applications in the visualization layer (for example, when exchanging data information between the real-time data visualization platform, multi-dimensional electromagnetic space display, three-dimensional visualization tools, customized reports and exports in the visualization layer), the data information usually needs to be transmitted in a specific format; the data parsing unit is used to decode, verify, and format the data information to ensure the accuracy and completeness of the data, extract useful information and convert it into the internal data structure of the system; the exchanged data information is selective, for example, when only two-dimensional spectrum data is needed, height information is not needed; when only a report needs to be exported, selective export is performed based on user demand.

[0126] The application interface unit is a set of rules and protocols used to define how different software systems in the visualization layer communicate with each other (for example, defining the communication rules and protocols between the real-time data visualization platform, multi-dimensional electromagnetic space display, three-dimensional visualization tools, customized reports and export units of the visualization layer), and establishing a standardized API, thereby allowing one system to request another system to perform certain functions or obtain data without having to understand the internal implementation details of the interactive device.

[0127] The human-computer interaction refers to the interaction mode between humans and computer systems. The human-computer interaction is used to receive touch or voice commands input by users, design visual display interfaces and interaction processes based on touch or voice commands, and optimize user experience, so that users can use electromagnetic space diagrams to design and implement systems efficiently and comfortably.

[0128] The logic control unit is the management process of data processing, task execution sequence and decision making within the electromagnetic space diagram design and implementation system, which is used to guide the operation of the system based on predefined rules, algorithms or business logic to ensure system stability and function realization.

[0129] The required electromagnetic spectrum data is mapped to the surface space through the data mapping unit. The data analysis unit, application interface unit, human-computer interaction and logic control unit are indispensable parts of the electromagnetic space map design and implementation system. They cooperate with each other to support the efficient operation of the system and the flow of information across systems, ensuring user experience and the intelligence level of the system.

[0130] The visualization layer includes a real-time data visualization platform, a multi-dimensional electromagnetic space display, a three-dimensional visualization tool, and a customized report and export unit; the real-time data visualization platform is used to develop a highly interactive Web GIS (geographic information system) platform that can display the electromagnetic data collected by each satellite and its geographical location information in real time, and use map projection, heat map, 3D earth model and other technologies to intuitively display the dynamic changes of the global electromagnetic environment;

[0131] The multi-dimensional electromagnetic space display is used to support users to switch between different electromagnetic frequency bands, time series and observation modes as needed, and generate multi-dimensional electromagnetic space diagrams, including radiation intensity distribution diagrams of specific frequency bands, time series change animations, and abnormal signal heat maps;

[0132] 3D visualization tools are used to integrate advanced 3D visualization technologies, such as volume rendering and streamline visualization, to help users gain a deeper understanding of the structure and changing trends of complex electromagnetic fields. They are especially suitable for studying electromagnetic phenomena in high-altitude environments such as the ionosphere and magnetosphere.

[0133] The customized report and export unit allows users to customize analysis report templates and supports exporting electromagnetic space diagrams, key data indicators and analysis results into PDF, image or video formats to facilitate reporting, communication and archiving.

[0134] The application layer is the visualized application field, including national security monitoring unit, spectrum resource management unit, shipping monitoring unit, and important target exploration unit; the national security monitoring unit refers to the application of electromagnetic space map to illegal signal detection and positioning, spectrum protection and anti-interference, and by drawing accurate electromagnetic spectrum map, it can quickly identify abnormal signal activities, help identify legal spectrum use and potential interference sources in the protection area, ensure that communication networks, navigation systems, etc. are not maliciously interfered with, and maintain the security of communication countries;

[0135] The spectrum resource management unit refers to the application of electromagnetic space maps to reasonable planning and allocation and dynamic spectrum sharing under the background of spectrum scarcity. Through detailed spectrum mapping, the management department can understand the actual occupancy of each frequency band, reasonably plan spectrum allocation, avoid spectrum congestion and conflict, and optimize resource utilization efficiency. Under the background of spectrum scarcity, electromagnetic space maps support real-time monitoring and analysis of spectrum usage status, provide data basis for dynamic spectrum access (DSA) technology, promote temporary allocation of underutilized frequency bands, and improve spectrum flexibility and utilization rate.

[0136] Shipping monitoring units refer to the use of electromagnetic space maps to ensure navigation safety and efficiency and maritime traffic management. Maritime departments use electromagnetic spectrum maps to monitor navigation radars, GPS navigation signals and their potential interference to ensure safe navigation and effective collision avoidance of ships. At the same time, they monitor the use of marine communication spectrum to ensure the smooth flow of emergency communications and maritime distress signals. High-spectral resolution mapping technology helps to distinguish communication signals between ships, assist maritime management agencies in controlling maritime traffic flow and monitoring illegal activities, and maintain maritime order and safety;

[0137] The important target reconnaissance unit refers to the use of electromagnetic space maps for electronic countermeasures and intelligence collection, covert communications and stealth technology. By detecting and locating enemy communications, radar and other electromagnetic signals, it provides valuable intelligence support for important operations, such as target identification, effectiveness evaluation and potential threat warning. Through spectrum analysis, the important target reconnaissance unit can identify low-observable communication windows and provide a reference for the development and testing of new stealth technologies and countermeasures.

[0138] The application layer is the final application scenario. At the same time, it iterates backwards from the application layer to the visualization layer, data layer, ground layer, and space layer layer to update and adjust the system according to user needs.

[0139] The data product generation module generates an electromagnetic space map based on the required electromagnetic spectrum data; and visualizes and applies the electromagnetic space map, including:

[0140] S31, determine the data product requirements and design the data transmission architecture through the logic control unit, and select the appropriate data transmission protocol and data format through the data parsing unit;

[0141] Determine data product requirements based on user needs. For example, if the user needs to conduct spectrum planning, the data product requirement is a more detailed spectrum distribution in a specific scenario; if the user needs to conduct shipping monitoring, the data product requirement is to focus on the dynamic situation of a large range and specific point targets.

[0142] Data product requirements include key indicators, data update frequency, interactivity requirements, etc.; data transmission architecture includes data extraction, conversion, loading, etc.; select appropriate data transmission protocols and data formats to ensure data security and efficient transmission.

[0143] S32. The data analysis unit analyzes and maps the required electromagnetic spectrum data to obtain an electromagnetic space map; based on the application interface unit, the electromagnetic space map develops data interfaces according to different visualization platforms and data reporting platforms, including RESTful, GraphQL, and Websocket, and sets up authentication and authorization mechanisms corresponding to different visualization platforms and data reporting platform application interfaces; based on the data transmission architecture, data transmission protocol, and data format, the electromagnetic space map is transmitted to different visualization tools and platforms through various data interfaces for visualization, and the data is transmitted between platforms.

[0144] S33. Obtain application requirements (i.e., some application scenarios of the application layer) based on human-computer interaction, design a visualization interface based on the application requirements, develop an intuitive and easy-to-use interaction mode, and apply the electromagnetic space map in the corresponding application scenario based on the visualization interface (i.e., obtain the corresponding data product); for example, if the user application requirement is shipping monitoring, then it is necessary to design the interface and interaction method of shipping monitoring; if the user application requirement is spectrum planning, then it is necessary to design the interface and interaction method required for spectrum planning.

[0145] The visual interface includes color matching, icon selection, layout structure, etc.

[0146] Furthermore, in one embodiment, it also includes: continuously iterating product functions according to user feedback and usage data; for example, when using spectrum planning products, users find that data in a certain area is missing, or that sparser or more detailed data in a certain area is required. In this case, feedback is required to be provided downward layer by layer. If the visualization layer does not have relevant design, the visualization design must be redone, and the data layer needs to provide relevant data. If the corresponding data is missing, the satellite must re-collect data, forming an iterative process.

[0147] Furthermore, in one embodiment, it also includes: allowing users to select data indicators of concern, generating corresponding visualization platforms and data products; for example, in the process of spectrum planning, users are concerned about the indicator of spectrum intensity, and the visualization platform needs to highlight the visualization display of spectrum intensity; if users are more concerned about the indicator of data update frequency, the corresponding visualization platform should also make corresponding adjustments.

[0148] Embodiment 2

[0149] An embodiment of the present invention provides an electromagnetic space diagram design and implementation method, comprising the following steps:

[0150] S100: Acquire global electromagnetic spectrum information, and map the global electromagnetic spectrum information to obtain mapping data;

[0151] S200: storing the surveying and mapping data in a database in a grid-divided manner; preprocessing the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; and filtering required electromagnetic spectrum data from the standard electromagnetic spectrum data according to application requirements;

[0152] S300: Generate an electromagnetic space map based on the required electromagnetic spectrum data; and visualize and apply the electromagnetic space map.

[0153] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0154] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0155] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0156] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks.

[0157] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electromagnetic space diagram design and implementation system, It is characterized in that It includes space-based satellite electromagnetic spectrum mapping module, mapping data processing module and data product generation module; The space-based satellite electromagnetic spectrum mapping module is used to obtain global electromagnetic spectrum information, and map the global electromagnetic spectrum information to obtain mapping data; and transmit the mapping data to the mapping data processing module; The surveying and mapping data processing module is used to receive the surveying and mapping data transmitted by the space-based satellite electromagnetic spectrum surveying and mapping module, and store the surveying and mapping data in a database in a grid-divided manner; Preprocessing the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; and filtering out required electromagnetic spectrum data from the standard electromagnetic spectrum data according to application requirements, and transmitting the required electromagnetic spectrum data to the data product generation module; The data product generation module is used to receive required electromagnetic spectrum data, generate an electromagnetic space map based on the required electromagnetic spectrum data; and visualize and apply the electromagnetic space map.

2. The electromagnetic space diagram design and implementation system according to claim 1, It is characterized in that The space-based satellite electromagnetic spectrum mapping module transmits the mapping data through the following steps: S11, determine the topology and link status of the constellation and the ground site, construct a three-dimensional matrix of data transmission time availability, and obtain the data transmission time series between the satellite and the ground site at any time; The three-dimensional matrix of data transmission time availability is expressed by the following formula: Q=[t,S m ,S n ] Where Q is the three-dimensional matrix of data transmission time availability; t is the time; S m Indicates the ground station number; S n Indicates the satellite number; S12. Based on the requirements and constraints, clarify the data downlink requirements of the satellite, so as to determine the priority of data service requirements; and Establishing a priority model and a satellite-ground site access priority sequence model based on the data service demand priority to obtain a data transmission priority sequence and a ground site access priority sequence; The priority model is expressed by the following formula: P I =ln(I 1 I 2 …I n )+1 Where P I I is the data transmission priority sequence; n It represents the importance value of the factor, and its value range is [0,10], where n is the number of factors considered; The satellite-ground site access priority sequence model is expressed by the following formula: Where P Final is the final access priority; P Base is the basic priority; F j is the dynamic adjustment factor; j is the number of adjustment factors; S13, determining a transmission path and site topology based on a ground site access priority sequence, a data transmission time sequence, and a data transmission priority sequence; S14. Determine whether there is data loss or distortion during the transmission process. If so, adjust the data transmission sequence to the highest priority and retransmit; if not, maintain the original transmission sequence.

3. The electromagnetic space diagram design and implementation system according to claim 1, It is characterized in that The space-based satellite electromagnetic spectrum mapping module includes a space layer and a first ground layer; The space layer is used to: acquire global electromagnetic spectrum information through satellites, and map the global electromagnetic spectrum information to obtain mapping data; and transmit the mapping data to a mapping data processing module; The first ground layer is used for tracking, measuring, telemetry and communication with satellites in the space layer.

4. The electromagnetic space diagram design and implementation system according to claim 1, It is characterized in that The surveying and mapping data processing module includes a second ground layer and a data layer; The second ground layer is used for spatial position matching, resolution matching, geographic information fusion of satellite data and ground targets, and receiving downlinked surveying and mapping data and forwarding it to the data layer; The data layer is used to: pre-process the surveying and mapping data to obtain standard electromagnetic spectrum data; and analyze the standard electromagnetic spectrum data to filter out the required electromagnetic spectrum data.

5. The electromagnetic space diagram design and implementation system according to claim 4, It is characterized in that The data layer includes a database, a data preprocessing unit, a data analysis unit, and a security and privacy protection unit; The data preprocessing unit is used to: receive surveying and mapping data, and store the surveying and mapping data in a database in a grid-divided manner; and perform format unification and data storage, correction and standardization, data interpolation and resampling, data cleaning, time synchronization and registration on the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; The data analysis unit is used to filter out required electromagnetic spectrum data from standard electromagnetic spectrum data according to application requirements; The security and privacy protection unit is used to set data access permissions and data tracking mechanisms, and encrypt data and user privacy.

6. The electromagnetic space diagram design and implementation system according to claim 1, It is characterized in that The data product generation module includes a data mapping unit, a data parsing unit, an application interface unit, a human-computer interaction, a visualization layer and an application layer; The data mapping unit is used to map the required electromagnetic spectrum data to the surface space, mark the geographical location and the usage of the specific frequency range existing around the airspace above it in the surface space, and obtain an electromagnetic space map; transmit the electromagnetic space map to the visualization layer for visualization; The visualization layer is used to visualize the electromagnetic space map; The application layer is used to apply the visualization data in corresponding application scenarios; The data parsing unit is used to decode, verify and format data information when exchanging data information between different systems or applications in the visualization layer; The application interface unit is used to define the communication rules and protocols between different software systems in the visualization layer; The human-computer interaction is used to receive touch or voice commands input by the user, and to design a visual display interface and an interaction process based on the touch or voice commands.

7. The electromagnetic space diagram design and implementation system according to claim 6, It is characterized in that The visualization layer includes a real-time data visualization platform, a multi-dimensional electromagnetic space display, a three-dimensional visualization tool, and a customized report and export unit.

8. The electromagnetic space diagram design and implementation system according to claim 6, It is characterized in that The application layer includes a national security monitoring unit, a spectrum resource management unit, a shipping monitoring unit and an important target survey unit.

9. The electromagnetic space diagram design and implementation system according to claim 1, It is characterized in that The data product generation module is used to perform the following operations: S31. Determine data product requirements based on user needs, and design data transmission architecture, data transmission protocol and data format; the data product requirements include key indicators, data update frequency, and interactivity requirements; S32. Analyze and map the required electromagnetic spectrum data to obtain an electromagnetic space map; and develop data interfaces according to different visualization platforms and data reporting platforms; Based on the data transmission architecture, data transmission protocol and data format, the electromagnetic space diagram is transmitted to different visualization tools and platforms through various data interfaces for visualization; S33. Obtain application requirements, design a visualization interface based on the application requirements, and apply the electromagnetic space diagram in corresponding application scenarios based on the visualization interface.

10. A method for designing and implementing an electromagnetic space diagram based on the system according to any one of claims 1 to 9, It is characterized in that The following steps are involved: S100: Acquire global electromagnetic spectrum information, and map the global electromagnetic spectrum information to obtain mapping data; S200: storing the surveying and mapping data in a database in a grid-divided manner; preprocessing the surveying and mapping data stored in the database to obtain standard electromagnetic spectrum data; and filtering required electromagnetic spectrum data from the standard electromagnetic spectrum data according to application requirements; S300: Generate an electromagnetic space map based on the required electromagnetic spectrum data; and visualize and apply the electromagnetic space map.

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