Earth-moon space spectrum resource planning and utilization method and digital base

Abstract

The invention discloses an earth-moon spatial spectrum resource planning and utilizing method and a digital base. The method comprises the following steps: step 1) configuring or importing earth-moon spectrum resource application scene information; 2) setting and calculating relevant parameters; 3) performing spectrum resource planning and business type compliance check; 4) carrying out satellite ephemeris data and orbit extrapolation calculation, link modeling calculation, interference analysis calculation and situation analysis calculation; step 5) judging whether the calculation result exceeds a threshold value allowed by the rule, if so, determining an overrun time period, and carrying out optimization adjustment on spectrum resources; turning to step 3); otherwise, turning to the step 6); and 6) carrying out visual display on a calculation result, and generating an earth-moon space spectrum resource planning report. According to the invention, a management department and a user are supported to reasonably plan spectrum resources from the outside of the earth high orbit space to the moon space, and the digital base can be expanded to different application scenes in other stars and interplanetary space.

Description

Technical Field

[0001] The present invention belongs to the field of scientific exploration and resource development and utilization of Earth-Moon space, and in particular to a method for planning and utilizing spectrum resources in Earth-Moon space and a digital base. Background Art

[0002] The cis-lunar space has become an extremely active frontier of scientific and technological exploration in the world. At present, there are no clear restrictions on the use of frequency resources in the lunar orbit space in the world. Mission planning and resource utilization are mainly based on the division method of Earth frequency resources. Before 2020, the number of spacecraft in the cis-lunar space is relatively small. Through certain forms of international conferences and data exchange, safe flight and resource sharing in orbit can basically be achieved.

[0003] However, starting from 2023, many countries and international organizations have proposed plans for the development and utilization of lunar resources. A large number of spacecraft will shuttle between the Earth and the Moon. In order to control the spacecraft and transmit detection data, each spacecraft carries one or more types of radio payloads, which use spectrum resources of a certain bandwidth. As these radio payloads move in the large space-time scene of the Earth and the Moon, the radiation range and dynamic characteristics of these radio payloads also change accordingly, and the spectrum security between them has become an urgent problem that needs to be solved.

[0004] The available frequency resources for scientific exploration and development of the cis-lunar space are becoming increasingly scarce. Due to the lack of corresponding models and analytical calculation tools, the international rules for the planning and utilization of frequency resources in the cis-lunar space are still immature, making it difficult to form a situation of orderly use. There is an urgent need for a basic tool that can serve as a spectrum resource planning tool for cis-lunar space missions to support management departments and users in planning spectrum resources from the high-orbit space of the earth to the lunar space. On the one hand, it can issue a compliance report or adjustment suggestions through compliance checks on national radio regulations. On the other hand, it can quantitatively calculate the interference situation of the frequency band used according to the application scenario, and provide an interference assessment report and a visual display of the situation. In addition, the cis-lunar space spectrum resource planning uses a digital base as a basic tool. During use, it only needs to install or load different types of application scenario plug-ins, calculation model plug-ins, and other frequency band spectrum resource plug-ins on this digital base, which can be expanded 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 spectrum resources in Earth-Moon space and a digital base.

[0006] In view of this, the present invention proposes a method for planning and utilizing spectrum resources in Earth-Moon space, comprising:

[0007] Step 1) Configure or import the Earth-Moon spectrum resource application scenario information;

[0008] Step 2) Setting calculation related parameters;

[0009] Step 3) Conduct spectrum resource planning and service type compliance checks;

[0010] Step 4) performing satellite ephemeris data and orbit extrapolation calculations, link modeling calculations, interference analysis calculations, and situation analysis calculations;

[0011] Step 5) Determine whether the calculation result exceeds the threshold value allowed by the rule. If it is, determine the exceeding time period and optimize and adjust the spectrum resources; and go to step 3); otherwise, go to step 6);

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

[0013] Preferably, the step 1) comprises the application scenarios of Earth-Moon spectrum resources, including: the three-dimensional space from the Earth-Moon L3 libration point to the Earth-Moon L1 libration point HALO south and north groups, and the three-dimensional space from the Earth-Moon L1 libration point HALO south and north groups to the Earth-Moon L2 libration point HALO south and north groups; the application scenario information of Earth-Moon spectrum resources includes: information from the Earth-Moon transfer orbit to the lunar orbit, geographical location information of the spacecraft on the lunar surface, spectrum resource frequency band information, spectrum resource bandwidth information, number of transmitting signal sources, spectrum energy information of transmitting signals, phase information of transmitting signals, number of received signals, spectrum energy information of receiving signals, phase information of receiving signals, correspondence information between transmitting signals and receiving signals, and threshold information of receiving signal interference value.

[0014] Preferably, the step 2) calculates relevant parameters including: calculation duration, step length and calculation cycle.

[0015] Preferably, the step 3) includes: performing compliance checks on the used frequency bands, service types, transmission energy and out-of-band suppression according to ITU recommendations and the Radio Frequency Allocation Table.

[0016] Preferably, the step 4) includes: satellite ephemeris data and orbit extrapolation calculation, link modeling calculation, interference analysis calculation, interference overlimit calculation, full-month distribution situation analysis calculation and regional distribution situation analysis calculation.

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

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

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

[0020] Basic calculation module, used to provide antenna model, earth station model and radio wave propagation model, and provide the basic model of channel calculation for link simulation and interference analysis;

[0021] Satellite orbit module, used to provide satellite ephemeris calculation, configure or import satellite ephemeris parameters, set orbit type parameter configuration, and orbit extrapolation calculation of fixed position and trajectory on the lunar surface; the orbit types include: Earth circular orbit, Earth elliptical orbit, circumlunar circular orbit, circumlunar elliptical orbit, Earth-Moon halo orbit, and long-distance retrograde orbit;

[0022] The link modeling module is used to determine the disturbed link and the interfering link according to the requirements, build the interference scenario, build the channel model for the link in the scenario, and perform link modeling calculation;

[0023] The interference calculation module is used to 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 and the link parameters, establish the interference calculation model, and perform interference analysis and calculation;

[0024] The spectrum resource planning module is used to perform compliance checks and interference calculations on spectrum resources and service types in application scenarios, determine or adjust spectrum resources based on the analysis of compliance check results and interference calculation results, and issue a planning report;

[0025] The situation analysis module is used to extract frequency assignment data according to the configuration, establish the mapping relationship between frequency assignment and orbit simulation parameters, and perform situation analysis calculations;

[0026] Visualization module, used to visualize the three-dimensional scenes of the earth, moon and spacecraft, and to display the compliance check results and interference calculation results on the interface;

[0027] 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.

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

[0029] The present invention proposes a method for planning and utilizing spectrum resources in the Earth-Moon space, which supports management departments and users to make reasonable plans for spectrum resources from the Earth's high-orbit space to the Moon's space. On the one hand, it can issue a compliance report or adjustment suggestions by checking the compliance of national radio regulations, and on the other hand, it can quantitatively calculate the interference situation of the frequency band used according to the application scenario, and provide an interference assessment report and a visual display of the situation.

[0030] The present invention proposes a digital base for planning and utilizing spectrum resources in Earth-Moon space, which includes 9 basic functional modules and can serve as a basic tool for spectrum resource planning for Earth-Moon space missions. It has the ability to plan spectrum resources in the S, X, Ku, and Ka bands. It has the ability to expand spectrum resource planning beyond Earth space and lunar space. It can be expanded to different application scenarios in other celestial bodies and interplanetary space by simply installing or loading different types of application scenario plug-ins, calculation model plug-ins, and other frequency band spectrum resource plug-ins on this digital base. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0032] Figure 2 is a method flow chart of embodiment 1 of the present invention;

[0033] Figure 3 This is a block diagram of the digital base composition of Example 2 of the present invention. DETAILED DESCRIPTION

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

[0035] Technical solution:

[0036] Application scope:

[0037] The digital base for planning spectrum resources in Earth-Moon space is applied in the field of scientific exploration and resource development and utilization in Earth-Moon space. The space range includes the three-dimensional space from the Earth-Moon L3 libration point to the Earth-Moon L1 libration point HALO south and north groups, as well as the three-dimensional space from the Earth-Moon L1 libration point HALO south and north groups to the Earth-Moon L2 libration point HALO south and north groups.

[0038] Basic functional components

[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: 3D scene visualization of the earth, moon, and aircraft, interface display of compliance inspection results and interference assessment results, and 2D curve display of interference calculation results;

[0048] 9) Database management module: stores configured application scenario parameter data, spectrum resource planning intermediate process data and result data, etc.; supports query, export and storage of various types of data according to configuration conditions.

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

[0050] Example 1

[0051] The present invention proposes a method for planning and utilizing spectrum resources in Earth-Moon space, which is applicable to the three-dimensional space from Earth-Moon L3 libration point to Earth-Moon L1 libration point HALO south and north groups, and the three-dimensional space from Earth-Moon L1 libration point HALO south and north groups to Earth-Moon L2 libration point HALO south and north groups. Because it involves real-time and post-calculation of spectrum resources of multi-target radio links in large-scale spatiotemporal dynamic scenarios, it needs to rely on certain hardware conditions and computing resources.

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

[0053] 1) Configure or import the Earth-Moon spectrum resource application scenario information and rule thresholds; wherein the scenario information includes: Earth-Moon transfer orbit to lunar orbit information, lunar surface spacecraft geographic location information, 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 received 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.

[0054] 2) Set the calculation time, step size, and cycle;

[0055] 3) Conduct spectrum resource planning and service type compliance checks; specifically, check the frequency bands used, service types, transmission energy, and out-of-band suppression according to the Radio Frequency Allocation Table, ITU Recommendation clauses and footnotes.

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

[0057] 5) The calculation can be stopped / paused as needed;

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

[0059] 7) Query calculation results and confirm compliance;

[0060] 8) Determine whether the calculation result exceeds the threshold value allowed by the regulations; the threshold values ​​include: I / N: interference-to-noise ratio threshold value -12.2dB; △T / T: equivalent noise temperature increment percentage -6dB; PFD: power flux density limit in accordance with ITU Recommendation "Radio Regulations Article 22"; EPFD: equivalent power flux density limit in accordance with ITU Recommendation "Radio Regulations Article 22".

[0061] 9) If the limit is exceeded, optimize and adjust the spectrum resources;

[0062] 10) If the limit is not exceeded, the calculation results are displayed visually;

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

[0064] Example 2

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

[0066] 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 scheduling service packages to achieve data transmission with the other eight modules;

[0067] Basic calculation module: Design antenna models, earth station models, and radio wave propagation models in ITU recommendations and rule appendices to provide basic models for channel calculation for link simulation and interference analysis;

[0068] Satellite orbit module: includes satellite ephemeris calculation, configuration and deployment of satellite ephemeris parameters that meet interface requirements. Orbit types include circular earth orbit, elliptical earth orbit, circular lunar orbit, elliptical lunar orbit, halo orbit (halo orbit), DRO (distant retrograde orbit) orbit parameter configuration, and orbit extrapolation calculation of fixed position and trajectory on the lunar surface;

[0069] Link modeling module: determines the disturbed links and interfering links according to user needs, builds interference scenarios, and constructs channel models for the links in the scenarios;

[0070] 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 and the link parameters, establish the interference calculation model, and perform interference calculation;

[0071] 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;

[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: 3D scene visualization of the earth, moon, and aircraft, interface display of compliance check results and interference assessment results, and 2D curve display of interference calculation results;

[0074] Database management module: stores configured application scenario parameter data, spectrum resource planning intermediate process data and result data, etc.; supports query, export and storage of various types of data according to configuration conditions.

[0075] The nine functional modules of the digital base used in Earth-Moon space spectrum resource planning cannot run independently, and must rely on a hardware environment with certain computing power to work efficiently. The operating system and database are essential basic systems, and the basic requirements of the hardware environment cannot 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 digital base for Earth-Moon space spectrum resource planning

[0080]

[0081] This embodiment establishes a digital environment for spectrum resource planning, which is applicable to Earth space and lunar space. With the subsequent addition of components, it can also be applicable to Mars space and 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 intended to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art 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 should be included in the scope of the claims of the present invention.

Claims

1. A method for planning and utilizing spectrum resources in Earth-Moon space, comprising: Step 1) Configure or import the Earth-Moon spectrum resource application scenario information; Step 2) Setting calculation related parameters; Step 3) Conduct spectrum resource planning and service 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 result exceeds the threshold value allowed by the rule, and if so, determining the exceeding time period and optimizing and adjusting the spectrum resources; and go to step 3); Otherwise, go to step 6); Step 6) Visualize the calculation results and generate a spectrum resource planning report for the Earth-Moon space.

2. The method for planning and utilizing spectrum resources in Earth-Moon space according to claim 1, characterized in that: The step 1) comprises the application scenarios of Earth-Moon spectrum resources, including: the three-dimensional space from the Earth-Moon L3 libration point to the Earth-Moon L1 libration point HALO south and north groups, and the three-dimensional space from the Earth-Moon L1 libration point HALO south and north groups to the Earth-Moon L2 libration point HALO south and north groups; the application scenario information of Earth-Moon spectrum resources includes: information from the Earth-Moon transfer orbit to the lunar orbit, geographical location information of the spacecraft on the lunar surface, spectrum resource frequency band information, spectrum resource bandwidth information, number of transmitting signal sources, spectrum energy information of transmitting signals, phase information of transmitting signals, number of received signals, spectrum energy information of receiving signals, phase information of receiving signals, correspondence information between transmitting signals and receiving signals, and threshold information of receiving signal interference value.

3. The method for planning and utilizing spectrum resources in Earth-Moon space according to claim 1, characterized in that: The step 2) calculates the relevant parameters including: calculation time, step length and calculation cycle.

4. The method for planning and utilizing spectrum resources in Earth-Moon space according to claim 1, characterized in that: The step 3) includes: performing compliance checks on the used frequency bands, service types, transmission energy and out-of-band suppression according to ITU recommendations and the radio frequency allocation table.

5. The method for planning and utilizing spectrum resources in Earth-Moon space according to claim 1, characterized in that: The step 4) includes: satellite ephemeris data and orbit extrapolation calculation, link modeling calculation, interference analysis calculation, interference overlimit calculation, full-month distribution situation analysis calculation and regional distribution situation analysis calculation.

6. The method for planning and utilizing spectrum resources in Earth-Moon space according to claim 1, characterized in that: The threshold values ​​in step 5) include: interference-to-noise ratio threshold value I / N, equivalent noise temperature increment percentage ΔT / T, power flux density limit value PFD and equivalent power flux density limit value EPFD.

7. The method for planning and utilizing spectrum resources in Earth-Moon space according to claim 1, characterized in that: The method also includes: storing the intermediate results and final results of the calculation and the planning report in a database.

8. A digital base for planning and utilizing spectrum resources in Earth-Moon space, characterized in that: include: Basic calculation module, used to provide antenna model, earth station model and radio wave propagation model, and provide the basic model of channel calculation for link simulation and interference analysis; Satellite orbit module, used to provide satellite ephemeris calculation, configure or import satellite ephemeris parameters, set orbit type parameter configuration, and orbit extrapolation calculation of fixed position and trajectory on the lunar surface; the orbit types include: Earth circular orbit, Earth elliptical orbit, circumlunar circular orbit, circumlunar elliptical orbit, Earth-Moon halo orbit, and long-distance retrograde orbit; The link modeling module is used to determine the disturbed link and the interfering link according to the requirements, build the interference scenario, build the channel model for the link in the scenario, and perform link modeling calculation; The interference calculation module is used to 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 and the link parameters, establish the interference calculation model, and perform interference analysis and calculation; The spectrum resource planning module is used to perform compliance checks and interference calculations on spectrum resources and service types in application scenarios, determine or adjust spectrum resources based on the analysis of compliance check results and interference calculation results, and issue a planning report; The situation analysis module is used to extract frequency assignment data according to the configuration, establish the mapping relationship between frequency assignment and orbit simulation parameters, and perform situation analysis calculations; A visualization module for three-dimensional scene visualization of the Earth, Moon, and spacecraft, and for interface display of compliance check results and interference calculation results; 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.

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