A method for designing a navigation and guidance symbiotic architecture based on a low-orbit internet constellation

Abstract

The application discloses a kind of based on low-orbit internet constellation's navigation symbiosis architecture design method, it is suitable for based on low-orbit internet constellation's navigation symbiosis system to design;The method comprises the following steps: by ground master control center according to GNSS navigation constellation and the navigation signal observation value of low-orbit internet constellation, navigation enhancement text message is solved and is sent to low-orbit internet constellation;Navigation enhancement text message is broadcasted to user terminal after being fused by low-orbit internet constellation in multidimension and enhanced;According to navigation enhancement text message, accurate position coordinates are generated by user terminal and are sent to low-orbit internet constellation;According to accurate position coordinates, corresponding satellite communication navigation resources are adjusted and dispatched by low-orbit internet constellation.The application can realize communication link optimization, beam switching control and dynamic scheduling and optimization using high-precision position information, and provide efficient, reliable and stable communication transmission for users in different scenarios.

Description

Technical Field

[0001] This specification relates to the field of navigation and positioning technology, and in particular to a design method for a communication and navigation symbiotic architecture based on a low-Earth orbit internet constellation. Background Technology

[0002] Currently, global satellite navigation systems are constantly evolving and being optimized, and satellite positioning has been integrated into all sectors of society. However, as industry applications continue to expand, its drawbacks are also becoming increasingly apparent, mainly manifested in weak signal strength, poor penetration, susceptibility to interference and deception, and vulnerability to obstruction and blockage in signal-denied environments such as urban canyons and forests. Since the Iridium system was proposed in 1987, low-Earth orbit (LEO) internet constellations have developed rapidly worldwide, and their unique advantages have provided an opportunity to address the shortcomings of existing satellite navigation systems. By using user navigation location information, the communication signal path between the user terminal and LEO satellites can be calculated, thereby optimizing beam coverage and power allocation. However, existing communication and navigation co-operation systems have failed to fully utilize the communication capabilities and navigation advantages of LEO constellations to form a unified service system.

[0003] Therefore, how to establish a communication and navigation symbiotic system based on a low-Earth orbit internet constellation, so as to achieve deep integration of communication and navigation and further improve the service performance of existing satellite navigation systems, is a technical problem that needs to be solved. Summary of the Invention

[0004] The purpose of the embodiments in this specification is to address the above-mentioned problems by providing a design method, apparatus, electronic device, and storage medium for a communication and navigation symbiotic architecture based on a low-Earth orbit internet constellation.

[0005] To solve the above-mentioned technical problems, the embodiments in this specification are implemented as follows:

[0006] Firstly, a design method for a communication and navigation symbiotic architecture based on a low-Earth orbit (LEO) internet constellation is proposed, applicable to the design of communication and navigation symbiotic systems based on LEO internet constellations; the method includes:

[0007] The ground control center calculates and generates navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation, and then sends them to the low-Earth orbit internet constellation.

[0008] The navigation enhancement message is then broadcast to the user terminal after being enhanced by multi-dimensional fusion from the low-orbit internet constellation.

[0009] The user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit internet constellation;

[0010] The low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on precise location coordinates.

[0011] Furthermore, the ground control center includes a ground monitoring station, a ground control station, and a ground gateway station; the ground monitoring station receives navigation signal observations from the GNSS navigation constellation and the LEO internet constellation; the ground control station calculates navigation enhancement information for the GNSS navigation constellation and the LEO internet constellation based on the navigation signal observations, the navigation enhancement information including at least precise ephemeris and clock bias, and regional / global atmospheric delay; and generates a navigation enhancement message based on the navigation enhancement information; the ground gateway station sends the navigation enhancement message to the LEO internet constellation via an uplink.

[0012] Furthermore, the low-Earth orbit internet constellation performs multi-dimensional fusion enhancement on the navigation enhancement message before broadcasting it to the user terminal, including:

[0013] Receive the navigation enhancement message;

[0014] It adopts a frequency fusion method to share the spectrum of navigation and positioning signals and communication signals, and performs non-orthogonal superposition of frequency domain and power domain;

[0015] The navigation enhancement message and navigation positioning signal are transmitted using a communication channel by employing information fusion and signal fusion methods.

[0016] The enhanced navigation message, after fusion and enhancement, is broadcast to the user terminal.

[0017] Further, the user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit internet constellation, including:

[0018] Receive navigation signals broadcast by the GNSS navigation constellation and the low-Earth orbit internet constellation, and generate local observation files;

[0019] After selecting a low-Earth orbit internet satellite and establishing a communication connection with it, receive the navigation enhancement message broadcast by the low-Earth orbit internet satellite;

[0020] Based on the navigation enhancement message and the local observation file, the precise location coordinates of the user terminal are calculated.

[0021] Send the precise location coordinates and / or user terminal request commands to the low-Earth orbit internet constellation.

[0022] Furthermore, the low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on the precise position coordinates, including:

[0023] Receive the precise location coordinates and / or the user terminal request command;

[0024] Based on the precise location coordinates and / or the user terminal request command, satellite time and frequency resources are scheduled to meet the communication and positioning service requests in different regions.

[0025] Furthermore, based on the precise location coordinates and / or the user terminal request command, satellite time-frequency resources are scheduled to meet the communication and positioning service requests in different areas. This includes: employing a beam-hopping approach to ensure communication rates meet requirements while maximizing positioning requests, establishing an objective function and constraints, and performing satellite time-frequency resource scheduling.

[0026]

[0027] In the formula, k represents the number of ground units, P i C represents the positioning traffic volume allocated by satellite beams. i T represents the communication traffic volume allocated by the satellite beam. pi This represents the positioning service request for the corresponding ground unit, T. ci This indicates a communication service request for the corresponding ground unit.

[0028] Furthermore, the adjustment and scheduling of corresponding satellite communication and navigation resources by the low-Earth orbit internet constellation based on the precise location coordinates also includes: scheduling and allocating satellite power resources according to the user terminal request instruction, so as to meet the positioning result error requirements under the premise of communication user service quality.

[0029] Furthermore, based on the user terminal request instruction, satellite power resources are scheduled and allocated to meet the positioning result error requirements under the premise of communication user service quality, including setting bit error rate constraints for communication users and / or setting a threshold for the total transmission power of positioning users.

[0030] Furthermore, the adjustment and scheduling of corresponding satellite communication and navigation resources by the low-orbit internet constellation based on the precise location coordinates also includes: upon receiving a special user request sent by the user terminal, adopting a narrow beam power enhancement on-demand mode to achieve joint satellite-ground beam resource scheduling.

[0031] Secondly, a communication and navigation symbiotic system based on a low-Earth orbit (LEO) internet constellation is proposed. This system is designed using the communication and navigation symbiotic architecture design method described in the first aspect, and includes a GNSS navigation constellation, a LEO internet constellation, a ground control center, and user terminals.

[0032] The ground control center is configured to calculate and generate navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation, and then send them to the low-Earth orbit internet constellation.

[0033] The user terminal is configured to generate precise location coordinates based on navigation enhancement messages and send them to the low-Earth orbit internet constellation;

[0034] The low-Earth orbit (LEO) internet constellation is configured to enhance navigation messages through multi-dimensional fusion and broadcast them to user terminals; and to adjust and schedule corresponding satellite communication and navigation resources based on precise location coordinates.

[0035] Thirdly, an electronic device is proposed, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the method as described in the first aspect.

[0036] Fourthly, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium stores one or more programs, which, when executed by an electronic device including multiple applications, cause the electronic device to perform the steps of the method described in the first aspect.

[0037] This instruction manual can achieve at least the following technical effects:

[0038] The communication and navigation symbiotic architecture design method based on a low-Earth orbit (LEO) internet constellation, as described in this application, is applicable to the design of communication and navigation symbiotic systems based on LEO internet constellations. The ground control center calculates and generates navigation enhancement messages based on navigation signal observations from both the GNSS navigation constellation and the LEO internet constellation, and sends these messages to the LEO internet constellation. The LEO internet constellation then performs multi-dimensional fusion enhancement on the navigation enhancement messages before broadcasting them to user terminals. The user terminals generate precise position coordinates based on the navigation enhancement messages and send them to the LEO internet constellation. Finally, the LEO internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on these precise position coordinates. This invention utilizes high-precision position information to achieve communication link optimization, beam switching control, and dynamic scheduling and optimization, providing users with efficient, reliable, and stable communication transmission in different scenarios.

[0039] (1) The user terminal can obtain navigation enhancement information from the communication link, thereby using GNSS / Low Orbit navigation observations to achieve precise positioning;

[0040] (2) By adopting frequency fusion, communication signals and navigation signals can share the spectrum and provide the necessary services to access users; by adopting signal fusion and information fusion, the power of navigation signals and the availability of navigation messages can be improved.

[0041] (3) The low-orbit Internet constellation uses the location information and request instructions uploaded by user terminals to calculate the regional communication traffic and positioning traffic, thereby optimizing time and frequency resources; after receiving a special user request, it can switch from broadcast mode to narrow beam power enhancement on-demand mode to provide communication and navigation services. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is one of the schematic diagrams of the communication and navigation symbiotic architecture design method based on a low-Earth orbit Internet constellation provided in the embodiments of this specification.

[0044] Figure 2 This is the second schematic diagram of the communication and navigation symbiotic architecture design method based on a low-Earth orbit Internet constellation provided in the embodiments of this specification.

[0045] Figure 3 This is the third schematic diagram of the communication and navigation symbiotic architecture design method based on a low-Earth orbit Internet constellation provided in the embodiments of this specification.

[0046] Figure 4 This is the fourth schematic diagram of the communication and navigation symbiotic architecture design method based on a low-Earth orbit Internet constellation provided in the embodiments of this specification.

[0047] Figure 5 This is the fifth schematic diagram of the communication and navigation symbiotic architecture design method based on a low-Earth orbit Internet constellation provided in the embodiments of this specification.

[0048] Figure 6 This is the sixth schematic diagram of the communication and navigation symbiotic architecture design method based on a low-Earth orbit Internet constellation provided in the embodiments of this specification.

[0049] Figure 7 This is a schematic diagram of the communication and navigation symbiotic system structure based on a low-Earth orbit internet constellation provided in the embodiments of this specification.

[0050] Figure 8 This is a schematic diagram of the structure of an electronic device provided as an embodiment of this specification. Detailed Implementation

[0051] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0052] As described in the background section, with the continuous development and optimization of Global Navigation Satellite Systems (GNSS), satellite positioning has been integrated into all sectors of society and has become an indispensable part. However, with the continuous expansion of industry applications, its drawbacks have also become increasingly apparent: weak signal strength, poor penetration, susceptibility to interference and deception, and easy obstruction and blockage in signal-denied environments such as urban canyons and forests.

[0053] Since the Iridium system was proposed in 1987, low-Earth orbit (LEO) internet constellations have developed rapidly worldwide, and their unique advantages have provided an opportunity to address the shortcomings of existing satellite navigation systems. On the one hand, LEO satellites have low orbital altitudes, low signal spatial loss, high ground strength, and strong anti-interference capabilities, enabling them to provide highly reliable and stable communication and navigation services to users in more areas. On the other hand, combined with navigation enhancement information broadcast through communication links by LEO constellations, and leveraging the rapid changes in the geometry of LEO satellites, precise positioning is more conducive to ambiguity calculation and convergence. Furthermore, by using user navigation location information, the communication signal path between the user terminal and the LEO satellites can be calculated, thereby optimizing beam coverage and power allocation.

[0054] However, existing communication and navigation co-operation systems have failed to fully utilize the communication capabilities and navigation advantages of low-Earth orbit (LEO) constellations to form a unified service system. Therefore, establishing a communication and navigation co-operation system based on a LEO internet constellation, enabling deep integration of communication and navigation, is expected to further improve the performance of existing satellite navigation system PNT services, thereby providing global communication and navigation services.

[0055] To address the problems in existing technologies, this invention proposes a communication and navigation symbiotic architecture design method utilizing low-Earth orbit (LEO) internet constellations, based on the current development status of LEO internet constellations. Specifically, it addresses the current situation where communication and navigation are not deeply integrated in existing service systems, and communication and navigation capabilities need further improvement. On one hand, through frequency integration, information integration, and signal integration, the invention utilizes LEO constellation communication channels to broadcast navigation enhancement information and navigation messages, thereby providing independent navigation capabilities or enhancing the service performance of existing satellite navigation systems. Simultaneously, by utilizing high-precision location information, communication link optimization, beam switching control, and dynamic scheduling and optimization can be achieved, providing users in different scenarios with efficient, reliable, and stable communication transmission.

[0056] The following detailed description of a communication and navigation symbiotic architecture design scheme based on a low-Earth orbit internet constellation, as described in this specification, is illustrated through specific examples.

[0057] Example 1

[0058] like Figure 1The diagram shown is a flowchart illustrating a communication and navigation symbiotic architecture design method based on a low-Earth orbit (LEO) internet constellation, according to an embodiment of this application. The method is applicable to the design of communication and navigation symbiotic systems based on LEO internet constellations, and includes:

[0059] S101: The ground control center calculates and generates navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the LEO internet constellation, and then sends them to the LEO internet constellation.

[0060] S102: The navigation enhancement message is enhanced by multi-dimensional fusion from the low-orbit internet constellation and then broadcast to the user terminal.

[0061] S103: The user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit Internet constellation.

[0062] S104: The low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on precise location coordinates.

[0063] In some implementations, the ground control center includes a ground monitoring station, a ground control station, and a ground gateway station.

[0064] In some implementations, the ground control center calculates and generates navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the LEO internet constellation, and then sends these messages to the LEO internet constellation. Figure 2 As shown, it includes:

[0065] S211: The ground monitoring station receives the navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation.

[0066] S212: The ground master control station calculates and obtains navigation enhancement information for the GNSS navigation constellation and the low-Earth orbit Internet constellation based on the navigation signal observations. The navigation enhancement information includes at least precise ephemeris and clock bias, as well as regional / global atmospheric delay. Based on the navigation enhancement information, the navigation enhancement message is generated.

[0067] S213: The ground gateway station sends the navigation enhancement message to the low-Earth orbit Internet constellation via the uplink.

[0068] In some implementations, the low-Earth orbit (LEO) internet constellation performs multi-dimensional fusion enhancement on the navigation enhancement message before broadcasting it to the user terminal, such as... Figure 3 As shown, it includes:

[0069] S311: Receive the navigation enhancement message.

[0070] S312: It adopts a frequency fusion method to share the spectrum of navigation and positioning signals and communication signals, and performs non-orthogonal superposition of frequency domain and power domain.

[0071] S313: The navigation enhancement message and navigation positioning signal are transmitted through a communication channel using information fusion and signal fusion methods.

[0072] S314: Broadcast the enhanced navigation message after fusion to the user terminal.

[0073] In some implementations, the user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit internet constellation, such as... Figure 4 As shown, it includes:

[0074] S411: Receive navigation signals broadcast by the GNSS navigation constellation and the low-Earth orbit internet constellation, and generate a local observation file.

[0075] S412: After selecting a low-Earth orbit internet satellite and establishing a communication connection with it, receive the navigation enhancement message broadcast by the low-Earth orbit internet satellite.

[0076] S413: Based on the navigation enhancement message and the local observation file, calculate the precise location coordinates of the user terminal.

[0077] S414: Send the precise location coordinates and / or user terminal request command to the low-Earth orbit Internet constellation.

[0078] In some implementations, the low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on the precise location coordinates, such as... Figure 5 As shown, it includes:

[0079] S511: Receive the precise location coordinates and / or the user terminal request command.

[0080] S512: Based on the precise location coordinates and / or the user terminal request command, schedule satellite time and frequency resources to meet the communication service volume requests and positioning service volume requests in different areas.

[0081] In some embodiments, satellite time-frequency resources are scheduled based on the precise location coordinates and / or the user terminal request instruction to meet the communication and positioning service requests in different regions. This includes: using a beam-hopping approach to ensure that the communication rate meets the requirements and maximizes the positioning request, establishing an objective function and constraints, and performing satellite time-frequency resource scheduling.

[0082]

[0083] In the formula, k represents the number of ground units, P i C represents the positioning traffic volume allocated by satellite beams. i T represents the communication traffic volume allocated by the satellite beam. pi This represents the positioning service request for the corresponding ground unit, T. ci This indicates a communication service request for the corresponding ground unit.

[0084] In some embodiments, the low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on the precise location coordinates, such as... Figure 6 As shown, it also includes:

[0085] S513: Based on the user terminal request instruction, schedule and allocate satellite power resources to meet the positioning result error requirements under the premise of communication user service quality.

[0086] In some embodiments, satellite power resources are scheduled and allocated according to the user terminal request instruction to meet the positioning result error requirements under the premise of communication user service quality, including: setting bit error rate constraints for communication users and / or setting a threshold for the total transmission power of positioning users.

[0087] In some embodiments, the low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on the precise location coordinates, and further includes: when receiving a special user request sent by the user terminal, adopting a narrow beam power enhancement on-demand mode to realize joint satellite-ground beam resource scheduling.

[0088] The communication and navigation symbiotic architecture design method based on a low-Earth orbit (LEO) internet constellation, as described in this application, is applicable to the design of communication and navigation symbiotic systems based on LEO internet constellations. The ground control center calculates and generates navigation enhancement messages based on navigation signal observations from both the GNSS navigation constellation and the LEO internet constellation, and sends these messages to the LEO internet constellation. The LEO internet constellation then performs multi-dimensional fusion enhancement on the navigation enhancement messages before broadcasting them to user terminals. The user terminals generate precise position coordinates based on the navigation enhancement messages and send them to the LEO internet constellation. Finally, the LEO internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on these precise position coordinates. This invention utilizes high-precision position information to achieve communication link optimization, beam switching control, and dynamic scheduling and optimization, providing users with efficient, reliable, and stable communication transmission in different scenarios.

[0089] (1) The user terminal can obtain navigation enhancement information from the communication link, thereby using GNSS / Low Orbit navigation observations to achieve precise positioning;

[0090] (2) By adopting frequency fusion, communication signals and navigation signals can share the spectrum and provide the necessary services to access users; by adopting signal fusion and information fusion, the power of navigation signals and the availability of navigation messages can be improved.

[0091] (3) The low-orbit Internet constellation uses the location information and request instructions uploaded by user terminals to calculate the regional communication traffic and positioning traffic, thereby optimizing time and frequency resources; after receiving a special user request, it can switch from broadcast mode to narrow beam power enhancement on-demand mode to provide communication and navigation services.

[0092] Example 2

[0093] Figure 7 This is a schematic diagram of a communication and navigation symbiotic system based on a low-Earth orbit internet constellation, provided as an embodiment of this specification. Please refer to... Figure 7 In one embodiment, the communication and navigation symbiotic system based on a low-Earth orbit (LEO) internet constellation is designed using the communication and navigation symbiotic architecture design method described in Example 1, including a GNSS navigation constellation 100, a LEO internet constellation 200, a ground control center 300, and user terminals 400; wherein,

[0094] The ground control center 300 is configured to calculate and generate navigation enhancement messages based on the navigation signal observations of the GNSS navigation constellation 100 and the low-Earth orbit internet constellation 200, and then send them to the low-Earth orbit internet constellation 200.

[0095] User terminal 400 is configured to generate precise location coordinates based on navigation enhancement messages and send them to low-Earth orbit Internet constellation 200;

[0096] The LEO Internet constellation 200 is configured to perform multi-dimensional fusion enhancement of navigation enhancement messages and then broadcast them to user terminals 400; and to adjust and schedule corresponding satellite communication and navigation resources based on precise location coordinates.

[0097] It should be understood that the communication and navigation symbiotic system based on a low-Earth orbit internet constellation, as described in the embodiments of this specification, can also perform... Figures 1 to 6 A method for implementing a communication and navigation symbiotic system based on a low-Earth orbit (LEO) internet constellation is presented, along with the implementation of a communication and navigation symbiotic architecture design system based on a LEO internet constellation. Figures 1 to 6 The functionality of the example shown will not be elaborated upon here.

[0098] Example 3

[0099] Figure 8 This is a schematic diagram of the structure of an electronic device according to one embodiment of this specification. Please refer to it. Figure 8At the hardware level, the electronic device includes a processor, and optionally also includes an internal bus, a network interface, and memory. The memory may include main memory, such as high-speed random-access memory (RAM), or non-volatile memory, such as at least one disk drive. Of course, the electronic device may also include other hardware required for other business operations.

[0100] The processor, network interface, and memory can be interconnected via an internal bus, which can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. This bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 8 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0101] Memory is used to store programs. Specifically, programs may include program code, which includes computer operation instructions. Memory may include main memory and non-volatile memory, and provides instructions and data to the processor.

[0102] The processor reads the corresponding computer program from non-volatile memory into main memory and then executes it, forming a shared resource access control mechanism at the logical level. The processor executes the program stored in memory and specifically performs the following operations:

[0103] This method is applicable to the design of communication and navigation symbiotic systems based on low-Earth orbit internet constellations; the method includes:

[0104] The ground control center calculates and generates navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation, and then sends them to the low-Earth orbit internet constellation.

[0105] The navigation enhancement message is then broadcast to the user terminal after being enhanced by multi-dimensional fusion from the low-orbit internet constellation.

[0106] The user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit internet constellation;

[0107] The low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on precise location coordinates.

[0108] The above is as described in this instruction manual. Figures 1 to 6 The communication and navigation symbiotic architecture design method based on a low-Earth orbit (LEO) internet constellation disclosed in the illustrated embodiments can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this specification. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this specification can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0109] Of course, in addition to the software implementation, the electronic devices in the embodiments of this specification do not exclude other implementation methods, such as logic devices or a combination of hardware and software, etc. That is to say, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0110] Example 4

[0111] This specification also provides an embodiment of a computer-readable storage medium that stores one or more programs, the programs including instructions that, when executed by a portable electronic device including multiple applications, enable the portable electronic device to perform... Figures 1 to 6 The illustrated embodiment describes a communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation, specifically used to execute the following methods:

[0112] This method is applicable to the design of communication and navigation symbiotic systems based on low-Earth orbit internet constellations; the method includes:

[0113] The ground control center calculates and generates navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation, and then sends them to the low-Earth orbit internet constellation.

[0114] The navigation enhancement message is then broadcast to the user terminal after being enhanced by multi-dimensional fusion from the low-orbit internet constellation.

[0115] The user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit internet constellation;

[0116] The low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on precise location coordinates.

[0117] In summary, the above description is merely a preferred embodiment of this specification and is not intended to limit the scope of protection of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

[0118] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, a computer can be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an electronic data carrier device, a game console, a tablet computer, a wearable device, or any combination of these devices.

[0119] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0120] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0121] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

Claims

1. A design method for a communication and navigation symbiotic architecture based on a low-Earth orbit internet constellation, characterized in that, This method is applicable to the design of communication and navigation symbiotic systems based on low-Earth orbit internet constellations; the method includes: The ground control center calculates and generates navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation, and then sends them to the low-Earth orbit internet constellation. The navigation enhancement message is then broadcast to the user terminal after being enhanced by multi-dimensional fusion from the low-orbit internet constellation. The user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit internet constellation; The low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on precise location coordinates; Based on the precise location coordinates and / or the user terminal request command, satellite time-frequency resources are scheduled to meet the communication and positioning service requests in different areas. This includes: employing a beam-hopping approach, with the goal of ensuring communication rates meet requirements and maximizing positioning requests, establishing an objective function and constraints, and performing satellite time-frequency resource scheduling. In the formula, Indicates the number of ground units. This indicates the positioning traffic volume allocated by satellite beams. This indicates the amount of communication traffic allocated to the satellite beam. This indicates a positioning service request for the corresponding ground unit. This indicates a communication service request for the corresponding ground unit.

2. The communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation according to claim 1, characterized in that, The ground control center includes ground monitoring stations, a ground control station, and ground signaling stations; as well as, The ground monitoring station receives the navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation; The ground control station calculates navigation enhancement information for the GNSS navigation constellation and the low-Earth orbit Internet constellation based on the navigation signal observations. The navigation enhancement information includes at least precise ephemeris and clock bias, as well as regional / global atmospheric delay. And, based on the navigation enhancement information, generate the navigation enhancement message; The ground gateway station sends the navigation enhancement message to the low-Earth orbit internet constellation via the uplink.

3. The communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation according to claim 2, characterized in that, The low-Earth orbit internet constellation performs multi-dimensional fusion enhancement on the navigation enhancement message before broadcasting it to the user terminal, including: Receive the navigation enhancement message; It adopts a frequency fusion method to share the spectrum of navigation and positioning signals and communication signals, and performs non-orthogonal superposition of frequency domain and power domain; The navigation enhancement message and navigation positioning signal are transmitted using a communication channel by employing information fusion and signal fusion methods. The enhanced navigation message, after fusion and enhancement, is broadcast to the user terminal.

4. The communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation according to claim 3, characterized in that, The user terminal generates precise location coordinates based on the navigation enhancement message and sends them to the low-Earth orbit internet constellation, including: Receive navigation signals broadcast by the GNSS navigation constellation and the low-Earth orbit internet constellation, and generate local observation files; After selecting a low-Earth orbit internet satellite and establishing a communication connection with it, receive the navigation enhancement message broadcast by the low-Earth orbit internet satellite; Based on the navigation enhancement message and the local observation file, the precise location coordinates of the user terminal are calculated. Send the precise location coordinates and / or user terminal request commands to the low-Earth orbit internet constellation.

5. The communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation according to claim 4, characterized in that, The low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on the precise location coordinates, including: Receive the precise location coordinates and / or the user terminal request command; Based on the precise location coordinates and / or the user terminal request command, satellite time and frequency resources are scheduled to meet the communication and positioning service requests in different regions.

6. The communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation according to claim 5, characterized in that, The method of adjusting and scheduling corresponding satellite communication and navigation resources based on the precise location coordinates by the low-Earth orbit internet constellation also includes: scheduling and allocating satellite power resources according to the user terminal request command, so as to meet the positioning result error requirements under the premise of communication user service quality.

7. The communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation according to claim 6, characterized in that, Based on the user terminal request instruction, satellite power resources are scheduled and allocated to meet the positioning result error requirements under the premise of communication user service quality, including setting bit error rate constraints for communication users and / or setting a threshold for the total transmission power of positioning users.

8. The communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation according to claim 5, characterized in that, The low-Earth orbit internet constellation adjusts and schedules corresponding satellite communication and navigation resources based on the precise location coordinates. It also includes: when receiving a special user request sent by the user terminal, adopting a narrow beam power enhancement on-demand mode to realize joint satellite-ground beam resource scheduling.

9. A communication and navigation symbiotic system based on a low-Earth orbit internet constellation, characterized in that, The system is designed using the communication and navigation symbiotic architecture design method based on a low-Earth orbit internet constellation as described in any one of claims 1 to 8, including a GNSS navigation constellation, a low-Earth orbit internet constellation, a ground control center, and user terminals; wherein... The ground control center is configured to calculate and generate navigation enhancement messages based on navigation signal observations from the GNSS navigation constellation and the low-Earth orbit internet constellation, and then send them to the low-Earth orbit internet constellation. The user terminal is configured to generate precise location coordinates based on navigation enhancement messages and send them to the low-Earth orbit internet constellation; The low-Earth orbit (LEO) internet constellation is configured to enhance navigation messages through multi-dimensional fusion and broadcast them to user terminals; and to adjust and schedule corresponding satellite communication and navigation resources based on precise location coordinates.

Images