Method for Planning and Utilizing Lunar-Space Spectrum Resources and Digital Foundation

Abstract

The present invention discloses a method for planning and utilizing lunar space spectrum resources and a digital base. The method includes: Step 1) configuring or importing lunar space spectrum resource application scenario information; Step 2) setting calculation-related parameters; Step 3) performing spectrum resource planning and business type compliance checks; Step 4) performing satellite ephemeris data and orbit extrapolation calculations, link modeling calculations, interference analysis calculations, and situation analysis calculations; Step 5) determining whether the calculation results exceed the threshold allowed by the rules. If so, determining the overrun period and performing optimization and adjustment of the spectrum resources, and then turning to Step 3); otherwise, turning to Step 6); Step 6) visually displaying the calculation results and generating a lunar space spectrum resource planning report. The present invention supports the management department and users in reasonably planning the spectrum resources from beyond the high-earth orbit space to the lunar space, and the digital base can be extended to different application scenarios in other celestial bodies and interplanetary space.

Description

Technical Field

[0001] The present invention belongs to the field of lunar-earth space science exploration and resource development and utilization, and particularly relates to a method for planning and utilizing lunar-earth space spectrum resources and a digital base. Background Art

[0002] The lunar-earth space has become an extremely active frontier hot spot in international science and technology exploration. At present, there is no clear constraint on the use of frequency resources in the lunar orbit space internationally. The task planning and resource utilization mainly refer to the division method of terrestrial frequency resources. Before 2020, the number of spacecraft in the lunar-earth space was small, and through certain forms of international conferences and data interaction methods, safe in-orbit flight and resource sharing could be basically achieved.

[0003] However, since 2023, multiple countries and international organizations have proposed plans for lunar resource development and utilization. A large number of spacecraft shuttle in the lunar-earth space. In order to control the spacecraft and transmit detection data, each spacecraft is equipped with one or more types of radio payloads, using a certain bandwidth of spectrum resources. These radio payloads move with the spacecraft in the large space-time scenario of the lunar-earth space, and their radiation ranges and dynamic characteristics also change accordingly. The spectrum security among them has also become an urgent problem to be solved.

[0004] The available frequency resources for lunar-earth space science exploration and development and utilization are becoming increasingly tense. Due to the lack of corresponding models and analysis and calculation tools, the rules for planning and utilizing lunar-earth space frequency resources internationally are not yet mature, and it is difficult to form a situation of sequential use. There is an urgent need for a basic tool that can be used for the spectrum resource planning of lunar-earth space missions to support the management department and users in planning the spectrum resources from beyond the geostationary orbit space to the lunar space. On the one hand, it can conduct compliance inspections on national radio regulations, issue rule compliance reports or adjustment suggestions. On the other hand, it can quantitatively calculate the interference situation of the used frequency bands according to the application scenarios, and give interference assessment reports and visual displays of the situation. In addition, as a basic tool, the digital base for planning and utilizing lunar-earth space spectrum resources only needs to install or load different types of application scenario plugins, calculation model plugins, and other frequency band spectrum resource plugins on this digital base during use, and can be extended to different application scenarios in other celestial bodies and interplanetary space. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and propose a method for planning and utilizing lunar-earth space spectrum resources and a digital base.

[0006] In view of this, the present invention proposes a method for planning and utilizing lunar-earth space spectrum resources, including:

[0007] Step 1) Configure or import lunar-earth spectrum resource application scenario information;

[0008] Step 2) Set relevant calculation parameters;

[0009] Step 3) Conduct spectrum resource planning and compliance check of service types;

[0010] Step 4) Conduct satellite ephemeris data and orbital extrapolation calculation, link modeling calculation, interference analysis calculation, and situation analysis calculation;

[0011] Step 5) Determine whether the calculation result exceeds the threshold allowed by the rule. If it is judged to be yes, determine the over-limit period and conduct optimization adjustment of spectrum resources; and go to Step 3); otherwise, go to Step 6);

[0012] Step 6) Visually display the calculation result and generate a spectrum resource planning report for the Earth-Moon space.

[0013] Preferably, the Earth-Moon spectrum resource application scenario in Step 1) includes: the three-dimensional space from the Earth-Moon L3 libration point to the south and north families of the HALO orbits at the Earth-Moon L1 libration point, and the three-dimensional space from the south and north families of the HALO orbits at the Earth-Moon L1 libration point to the south and north families of the HALO orbits at the Earth-Moon L2 libration point; the Earth-Moon spectrum resource application scenario information includes: the information from the Earth-Moon transfer orbit to the lunar orbit, the geographical location information of the lunar surface aircraft, the spectrum resource frequency band information, the spectrum resource bandwidth information, the number of transmitting signal sources, the transmitting signal spectrum energy information, the transmitting signal phase information, the number of receiving signals, the receiving signal spectrum energy information, the receiving signal phase information, the correspondence information between the transmitting signal and the receiving signal, and the receiving signal interference value threshold information.

[0014] Preferably, the relevant calculation parameters in Step 2) include: calculation duration, step size, and calculation period.

[0015] Preferably, Step 3) includes: conducting compliance checks on the used frequency band, service type, transmitting energy, and out-of-band suppression according to the ITU recommendations and the radio frequency allocation table.

[0016] Preferably, Step 4) includes: satellite ephemeris data and orbital extrapolation calculation, link modeling calculation, interference analysis calculation, interference over-limit calculation, full-moon distribution situation analysis calculation, and regional distribution situation analysis calculation.

[0017] Preferably, the thresholds in Step 5) include: interference-to-noise ratio threshold I / N, equivalent noise temperature increment percentage △T / T, power flux density limit PFD, and equivalent power flux density limit EPFD.

[0018] Preferably, the method further includes: storing the intermediate results, final results of the calculation, and the planning report in the database.

[0019] On the other hand, the present invention provides a digital base for the planning and utilization of spectrum resources in the Earth-Moon space, including:

[0020] A basic computing module for providing antenna models, Earth station models, and radio wave propagation models, and providing basic models for channel calculation for link simulation and interference analysis;

[0021] A satellite orbit module for providing satellite ephemeris calculation, configuring or importing satellite ephemeris parameters, setting orbital type parameter configurations, and performing orbital extrapolation calculations for fixed positions and operating trajectories on the lunar surface; the orbital types include: Earth circular orbit, Earth elliptical orbit, lunar circular orbit, lunar elliptical orbit, Earth-Moon halo orbit, and long-distance retrograde orbit;

[0022] A link modeling module for determining disturbed links and interfering links according to requirements, constructing interference scenarios, and performing channel model construction and link modeling calculations on the links in the scenarios;

[0023] An interference calculation module for formulating link tracking strategies for stations, integrating the mapping relationships between time-domain, space-domain, and frequency-domain simulation scenario parameters into link parameters, establishing interference calculation models, and performing interference analysis calculations;

[0024] A spectrum resource planning module for performing compliance checks and interference calculations on spectrum resources and service types in application scenarios, determining or adjusting spectrum resources based on the analysis of compliance check results and interference calculation results, and issuing a planning report;

[0025] A situation analysis module for extracting frequency assignment data according to configurations, establishing mapping relationships between frequency assignments and orbital simulation parameters, and performing situation analysis calculations;

[0026] A visualization module for visually displaying three-dimensional scenarios of the Earth, the Moon, and aircraft, and displaying compliance check results and interference calculation results on the interface;

[0027] A database management module for storing configured application scenario parameter data, spectrum resource planning intermediate process data, and result data, and providing query, export, and storage in the database.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] The present invention proposes a method for the planning and utilization of spectrum resources in the Earth-Moon space, which supports the management department and users in reasonably planning the spectrum resources from beyond the geostationary orbit of the Earth to the Moon space. On the one hand, it can issue a rule compliance report or adjustment suggestions through compliance checks on national radio regulations, and on the other hand, it can quantitatively calculate the interference situation of the used frequency bands according to application scenarios, and give an interference assessment report and a visual display of the situation.

[0030] The present invention provides a digital base for lunar-earth space spectrum resource planning and utilization, which includes 9 basic functional modules and can serve as a basic tool for lunar-earth space mission spectrum resource planning. It has the ability to plan spectrum resources in S, X, Ku, and Ka frequency bands and has the ability to expand spectrum resource planning beyond the earth space and lunar space. By simply installing or loading different types of application scenario plugins, calculation model plugins, and other frequency band spectrum resource plugins on this digital base, it can be extended to different application scenarios in other celestial bodies and interplanetary space. Description of the Drawings

[0031] Figure 1 It is a schematic diagram of the applicable scope of the digital base for lunar-earth space spectrum resource planning and utilization of the present invention;

[0032] Figure 2 It is a flowchart of the method in Embodiment 1 of the present invention;

[0033] Figure 3 It is a block diagram of the digital base in Embodiment 2 of the present invention. Detailed Embodiments

[0034] The present invention provides a digital base for lunar-earth space spectrum resource planning and utilization and its implementation method, which includes 9 basic modules and can serve as a basic tool for lunar-earth space mission spectrum resource planning in practical applications. It has the ability to plan spectrum resources in S, X, Ku, and Ka frequency bands and is compatible with multiple types of orbital models such as DRO, LRO, and LLO. When extended to different application scenarios in other celestial bodies and interplanetary space, access to applications can be achieved by installing or loading different types of application scenario plugins and calculation model plugins.

[0035] Technical Solutions:

[0036] Applicable Scope:

[0037] The digital base for lunar-earth space spectrum resource planning and utilization is applied to the fields of lunar-earth space scientific exploration and resource development and utilization. The spatial scope includes the three-dimensional space from the lunar-earth L3 libration point to the southern and northern HALO families of the lunar-earth L1 libration point, as well as the three-dimensional space from the southern and northern HALO families of the lunar-earth L1 libration point to the southern and northern HALO families of the lunar-earth L2 libration point.

[0038] Basic Functional Composition

[0039] The digital base for the planning and utilization of Earth-Moon space spectrum resources includes 9 basic modules, namely, architecture design module, basic calculation module, satellite orbit module, link modeling module, interference calculation module, resource planning module, situation analysis module, visualization module and database management module. Each module has specialized computing capabilities and there is no separate interface between them. The respective calculation data are recorded in the database management module respectively, and data interaction is achieved by accessing the database. These 9 basic modules are applicable to Figure 1 Within the scope of the Earth-Moon space shown, when expanded to different application scenarios in other celestial bodies and interplanetary space, it can be expanded by converting multiple coordinate systems and installing plug-ins.

[0040] 1) Architecture design module: The software system is designed with a layered structure, and the basic architecture is divided into five parts: application layer, functional module layer, data support environment, software platform and hardware support platform. The organic combination of various levels is achieved, and the scheduling between levels and modules is carried out through the scheduling service package to achieve data transmission between the other eight modules;

[0041] 2) Basic calculation module: Design antenna models, earth station models, and radio wave propagation models in ITU recommendations and rule appendices as the basic models for channel calculation for link simulation and interference analysis;

[0042] 3) Satellite orbit module: includes satellite ephemeris calculation, and configuration and deployment of satellite ephemeris parameters that meet interface requirements. Orbit types include circular earth orbit, elliptical earth orbit, circular circumlunar orbit, circumlunar elliptical orbit, parameter configuration of Earth-Moon halo orbit (halo orbit), DRO (distant retrograde orbit), and orbit extrapolation calculation of fixed positions and running trajectories on the lunar surface;

[0043] 4) Link modeling module: Determine the disturbed links and interfering links according to user needs, build interference scenarios, and construct channel models for the links in the scenarios;

[0044] 5) Interference calculation module: formulate the link tracking strategy of the station, integrate the mapping relationship between the simulation scenario parameters in the time domain, space domain and frequency domain to the link parameters, establish the interference calculation model, and perform interference calculation;

[0045] 6) Spectrum resource planning module: performs compliance checks and interference calculations on spectrum resources in certain application scenarios, determines or adjusts spectrum resources based on the analysis of compliance check results and interference calculation results, and issues a planning report;

[0046] 7) Situation analysis module: extract frequency assignment data from the air interface parameters configured by the user, and establish a mapping relationship between frequency assignment and orbit simulation parameters;

[0047] 8) Visualization module: It performs three-dimensional scene visualization of the Earth, the Moon, and the aircraft, displays the compliance check results and interference assessment results on the interface, and displays the interference calculation results as two-dimensional curves.

[0048] 9) Database management module: It stores the configured application scenario parameter data, intermediate process data and result data of spectrum resource planning, etc.; it supports querying, exporting and storing various data in the database according to configured conditions.

[0049] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0050] Embodiment 1

[0051] The present invention proposes a method for spectrum resource planning and utilization in the Earth-Moon space, which is applicable to the three-dimensional space from the Earth-Moon L3 libration point to the south and north families of HALO of the Earth-Moon L1 libration point, and the three-dimensional space from the south and north families of HALO of the Earth-Moon L1 libration point to the south and north families of HALO of the Earth-Moon L2 libration point. Since it involves real-time and post-event calculations of multi-target radio link spectrum resources in a large spatio-temporal dynamic scenario, it requires certain hardware conditions and computing power resources.

[0052] As Figure 2 shown, the implementation process can be described as follows:

[0053] 1) Configure or import the Earth-Moon spectrum resource application scenario information and rule thresholds; among them, the scenario information includes: the information from the Earth-Moon transfer orbit to the lunar orbit, the geographical location information of the aircraft on the lunar surface, the spectrum resource frequency band information, the spectrum resource bandwidth information, the number of emission signal sources, the spectrum energy information of the emission signals, the phase information of the emission signals, the number of received signals, the spectrum energy information of the received signals, the phase information of the received signals, the correspondence information between the emission signals and the received signals, and the interference value threshold information of the received signals.

[0054] 2) Set the calculation duration, step size, and period;

[0055] 3) Perform spectrum resource planning and business type compliance check; specifically include: checking the used frequency band, business type, emission energy, and out-of-band suppression according to the radio frequency division table, ITU recommendation clauses and footnotes.

[0056] 4) Call the model to perform satellite ephemeris data / orbit extrapolation calculation, link modeling calculation, interference analysis calculation, and situation analysis calculation;

[0057] 5) Stop / pause the calculation as needed;

[0058] 6) Store the intermediate data and result data in the database;

[0059] 7) Query the calculation results and perform compliance confirmation;

[0060] 8) Determine whether the calculation result exceeds the threshold allowed by the rules; the thresholds include: I / N: interference noise ratio threshold -12.2 dB; △T / T: equivalent noise temperature increment percentage -6 dB; PFD: power flux density limit according to Recommendation ITU, Article 22 of the Radio Regulations; EPFD: equivalent power flux density limit according to Recommendation ITU, Article 22 of the Radio Regulations.

[0061] 9) If it exceeds the limit, perform an optimized adjustment of the spectrum resources;

[0062] 10) If it does not exceed the limit, visually display the calculation result;

[0063] 11) Generate a spectrum resource planning report for the Earth-Moon space.

[0064] Embodiment 2

[0065] Embodiment 2 of the present invention provides a digital foundation for spectrum resource planning and utilization in the Earth-Moon space, which is implemented based on the method of Embodiment 1, as Figure 3 shown.

[0066] Architecture design module: Use a hierarchical structure to design the software system, divide the infrastructure into five parts: application layer, functional module layer, data support environment, software platform, and hardware support platform, to achieve an organic combination between each level. The data transmission between levels and between modules is carried out through the scheduling service package to achieve data transmission with the other eight modules;

[0067] Basic calculation module: Design the antenna model, earth station model, and radio wave propagation model in the ITU recommendation and rule appendix as the basic models for channel calculation in link simulation and interference analysis;

[0068] Satellite orbit module: Include satellite ephemeris calculation, as well as the configuration and deployment of importing satellite ephemeris parameters that meet the interface requirements. The orbit types include circular orbit of the Earth, elliptical orbit of the Earth, circular orbit around the Moon, elliptical orbit around the Moon, Earth-Moon halo orbit, parameter configuration of the DRO (distant retrograde orbit), and orbit extrapolation calculation of the fixed position and running trajectory on the lunar surface;

[0069] Link modeling module: Determine the disturbed link and interference link according to user requirements, construct an interference scenario, and build a channel model for the links in the scenario;

[0070] Interference calculation module: Develop a link tracking strategy for the station, integrate the mapping relationship between the time-domain, space-domain, and frequency-domain simulation scenario parameters into the link parameters, establish an interference calculation model, and perform interference calculation;

[0071] Spectrum Resource Planning Module: Conduct compliance checks and interference calculations on spectrum resources in a certain application scenario. Determine or adjust spectrum resources based on the analysis of the compliance check results and interference calculation results, and issue a planning report.

[0072] Situation Analysis Module: Extract frequency assignment data from the air interface parameters configured by the user and establish a mapping relationship between frequency assignment and orbit simulation parameters.

[0073] Visualization Module: Provide three-dimensional scene visualization of the Earth, the Moon, and aircraft, display the compliance check results and interference assessment results on the interface, and display the interference calculation results as two-dimensional curves.

[0074] Database Management Module: Store configured application scenario parameter data, intermediate process data, and result data of spectrum resource planning, etc.; Support querying, exporting, and storing various data in the database according to configured conditions.

[0075] The nine functional modules of the digital base for spectrum resource planning and utilization in the Earth-Moon space cannot run independently and need to rely on a hardware environment with a certain computing power to work efficiently. The operating system and database are essential basic systems. The basic requirements of the hardware environment should not be lower than the performance parameters in Table 1, otherwise the computing efficiency will be reduced.

[0076] 1) Supported operating system types: Windows, Linux, etc.

[0077] 2) Supported database types: MySQL8, Redis6, etc.

[0078] 3) Hardware environment requirements: See Table 1.

[0079] Table 1 Hardware Environment Requirements for the Digital Base of Spectrum Resource Planning and Utilization in the Earth-Moon Space

[0080]

[0081] This embodiment establishes a digital environment for spectrum resource planning, which is applicable to the Earth space and the Moon space. By adding components later, it can also be applicable to the Mars space, the Mercury space, etc., and has good scalability.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solutions of the present invention does not depart from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A method for planning and utilizing lunar-earth space spectrum resources, comprising: Step 1) Configure or import lunar-earth spectrum resource application scenario information; Step 2) Set relevant calculation parameters; Step 3) Conduct spectrum resource planning and compliance inspection of service types; Step 4) Conduct satellite ephemeris data and orbit extrapolation calculations, link modeling calculations, interference analysis calculations, and situation analysis calculations; Step 5) Determine whether the calculation result exceeds the threshold allowed by the rules. If it is determined to be yes, determine the over-limit period and perform optimization adjustment of the spectrum resources; And go to Step 3); Otherwise, go to Step 6); Step 6) Visually display the calculation results and generate a lunar-earth space spectrum resource planning report; The lunar-earth spectrum resource application scenario in Step 1) includes: the three-dimensional space from the lunar-earth L3 libration point to the south and north families of HALO of the lunar-earth L1 libration point, and the three-dimensional space from the south and north families of HALO of the lunar-earth L1 libration point to the south and north families of HALO of the lunar-earth L2 libration point; the lunar-earth spectrum resource application scenario information includes: lunar-earth transfer orbit to lunar orbit information, geographical location information of lunar surface aircraft, spectrum resource frequency band information, spectrum resource bandwidth information, number of transmitting signal sources, transmitting signal spectrum energy information, transmitting signal phase information, number of receiving signals, receiving signal spectrum energy information, receiving signal phase information, corresponding relationship information between transmitting signals and receiving signals, and receiving signal interference value threshold information.

2. The method for planning and utilizing the ground-moon space spectrum resources according to claim 1, characterized in that, The relevant calculation parameters in Step 2) include: calculation duration, step size, and calculation period.

3. The method for planning and utilizing the lunar-earth space spectrum resources according to claim 1, wherein Step 3) includes: Conducting compliance inspections on the used frequency bands, service types, transmission energy, and out-of-band suppression according to ITU recommendations and radio frequency allocation tables.

4. The method for planning and utilizing the ground-moon space spectrum resources according to claim 1, characterized in that, Step 4) includes: Satellite ephemeris data and orbit extrapolation calculations, link modeling calculations, interference analysis calculations, interference over-limit calculations, full-month distribution situation analysis calculations, and regional distribution situation analysis calculations.

5. The method for planning and utilizing the spectrum resources in the Earth-Moon space according to claim 1, wherein The thresholds in Step 5) include: interference-to-noise ratio threshold I / N, equivalent noise temperature increment percentage △T / T, power flux density limit PFD, and equivalent power flux density limit EPFD.

6. The method for planning and utilizing the ground-moon space spectrum resources according to claim 1, wherein, The method further includes: Storing the intermediate results, final results of the calculations, and the planning report in a database.

7. A digital base for the planning and utilization of lunar space spectrum resources, characterized in that Including: An architecture design module, used to design the software system using a hierarchical structure, realize the organic combination between layers, and realize data transmission with other eight modules; A basic calculation module, used to provide antenna models, earth station models, and radio wave propagation models, and provide basic models for channel calculations for link simulation and interference analysis; A satellite orbit module, used to provide satellite ephemeris calculations, configure or import satellite ephemeris parameters, set orbit type parameter configurations, and perform orbit extrapolation calculations for fixed positions and operating trajectories on the lunar surface; The orbit types include: earth circular orbit, earth elliptical orbit, lunar circular orbit, lunar elliptical orbit, lunar-earth halo orbit, and long-distance retrograde orbit; A link modeling module, used to determine the disturbed link and interference link according to requirements, construct an interference scenario, and perform channel model construction and link modeling calculations on the links in the scenario; The interference calculation module is used to formulate the link tracking strategy of the station, integrate the mapping relationship between the time-domain, space-domain and frequency-domain simulation scenario parameters into the link parameters, establish an interference calculation model, and perform interference analysis and calculation; The spectrum resource planning module is used to conduct compliance checks and interference calculations on the spectrum resources and service types in the application scenario, determine or adjust the spectrum resources based on the analysis of the compliance check results and interference calculation results, and issue a planning report; The situation analysis module is used to extract the frequency assignment data according to the configuration, establish the mapping relationship between the frequency assignment and the orbit simulation parameters, and perform situation analysis and calculation; The visualization module is used to perform three-dimensional scene visualization of the earth, the moon and the aircraft, and display the compliance check results and interference calculation results on the interface; and The database management module is used to store the configured application scenario parameter data, spectrum resource planning intermediate process data and result data, and provide query, export and storage in the database.

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