CN116192256A - Multi-node service information processing method based on lift-off platform - Google Patents
Multi-node service information processing method based on lift-off platform Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The multi-node service information processing method based on the lift-off platform integrates a laser communication system, a laser time service system and the like into the same optical load, so that service functions such as laser communication data information, navigation information receiving and transmitting, optical time synchronization and the like can share the same optical link and a tracking system, and different service information services are provided for a plurality of targets on the ground according to actual requirements. The multi-service information node based on the lift-off platform not only realizes the lift-off maneuver of the information node and innovates the application mode of 'ground-to-air whole coverage', but also realizes the multifunctional multiplexing of the optical information system, implements the design concept of 'multiple functions customized on demand', and provides an important solution for the development of a maneuvering information network.
Description
Technical Field
The invention belongs to the interdisciplines of geometric optics, laser communication and time service navigation, in particular to a method for carrying multi-service information nodes on a lift-off platform and realizing various information functions such as communication, navigation, time service and the like in a larger space range by means of an air-to-ground optical communication link, and particularly relates to a multi-node service information processing method based on the lift-off platform.
Background
As an information carrier, the light wave has the advantages of long transmission distance, large information capacity, electromagnetic interference resistance and the like, and has important application value in the aspects of all-optical communication, time synchronization, navigation positioning and the like. The optical fiber communication channel is an optical fiber, is a main transmission means of a physical layer of a fixed communication network, and the free space laser communication two parties need to accurately follow the mutual view field of aiming equipment, the transmission performance is affected by weather conditions, and when the optical fiber communication channel resource is not provided, the free space laser communication can be used as a supplementary means of microwave wireless communication to realize efficient information transmission. The time synchronization using light wave as carrier is divided into information time synchronization and physical time synchronization, the information time synchronization is to transmit clock information in the form of optical signal, the physical time synchronization is to calculate clock error by means of optical interference to realize time synchronization, the latter accuracy is several orders of magnitude higher than the former. In addition, the navigation positioning using light waves as an information transmission carrier has the capability of running under strong electromagnetic interference and has important application value for reliable running of various maneuvering platforms.
The unmanned aerial vehicle and other lift-off platforms have the advantages of large moving range, high flexibility and the like, and can finish large-range remote control operations such as crop monitoring, pesticide spraying, earthquake-resistant search and rescue and the like. In particular, in 2021, 7 and 21 days, two ' pterosaurs ' unmanned aerial vehicles fly from Guizhou to Henan disaster relief sites through 1200 km, and an important means is provided for disaster recovery people's contact reports, site image feedback and the like.
Disclosure of Invention
Aiming at the defects, the technical problem to be solved by the invention is how to integrate a laser communication system, a laser time service system and the like into the same optical load, and the laser time service system is mounted on a lift-off platform as a multi-service information node, and provides data transmission and navigation positioning services for a plurality of targets on the ground by means of the laser communication system, and provides time synchronization reference for the plurality of targets on the ground by means of the laser time service system, so that flexible, wide-range coverage and multifunctional multiplexing information guarantee service is realized under strong electromagnetic interference.
In view of the fact that the endurance time of the lift-off platform highly depends on the load of the lift-off platform, various systems taking optics as an information carrier need to multiplex the same equipment as much as possible to reduce the lift-off load.
Preferably, the ground station transmits communication data, navigation positioning data and time service control signals to the lift-off platform through the link, so that the lift-off platform is ensured to be in communication with the fixed network, the self position can be determined in real time, and the clock is consistent with the clock of the fixed network.
Preferably, the laser communication system is used for establishing data communication with a ground station.
Preferably, the laser time service system calculates the clock difference between the lift-off platform and the ground station by sending and receiving the optical pulse signals, and completes time synchronization between the lift-off platform clock and the ground station clock.
Preferably, the optical load is integrated with an optical clock and an optical inertial navigation system.
Preferably, the method specifically comprises the following steps:
s1, integrating a laser communication system, a laser time service system, an optical clock, optical inertial navigation and other equipment into the same optical system, realizing the transmission of free space optical signals through a shared tracking system, upgrading an information processing module matched with the optical system into a multi-service information node, carrying out lift-off through a lift-off platform, and providing a medium for the establishment of an information link between two ground nodes which are far apart;
s2, a free space optical link is established between one or more ground stations and a multi-service information node of the lift-off platform, so that laser communication data transmission, laser time synchronization and laser navigation positioning functions are developed;
s3, realizing that the multi-service information node of the lift-off platform is topologically connected with a fixed communication network, enabling the carried clock to be consistent with the clock of the fixed communication network, knowing the position of the self in real time, and realizing that the ground maneuvering platform is topologically connected with the fixed communication network, enabling the ground maneuvering platform to be in communication interconnection with each other, enabling the carried clock to be consistent with the clock of the fixed communication network, and knowing the position of the self in real time.
Preferably, the ground maneuvering nodes establish communication interconnection with the fixed communication network through the multi-service information nodes of the lift-off platform, and the ground maneuvering nodes can establish communication interconnection with each other through the multi-service information nodes of the lift-off platform.
Preferably, the ground maneuvering node calculates the clock difference of the lift-off platform by sending and receiving the optical pulse signals, and completes time synchronization with the lift-off platform clock.
Preferably, the ground maneuvering node receives position coordinates transmitted by the three lift-off platforms through laser communication, sends signals to the three lift-off platforms and receives return signals, judges the distance between the ground maneuvering node and the three lift-off platforms by analyzing the return signals, and determines the position of the ground maneuvering node according to the received space coordinates of the three lift-off platforms.
The present invention provides a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the above method.
Compared with the prior art, the invention has the following advantages:
firstly, the invention provides an all-optical multi-service information node which can support a plurality of service information functions such as data communication, time synchronization, navigation positioning and the like under the condition of strong electromagnetic interference;
secondly, in view of the fact that the tracking and aiming system occupies most of the load balance weight of the optical system, the design concept of the multiplexing optical system is provided, and the system load can be greatly compressed;
finally, the invention provides a design concept of lifting the multi-service information node to run, greatly expands the coverage range of the multi-service information node, and can provide information guarantee for maneuvering targets in a larger range.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are needed to be used in the embodiments of the present invention will be briefly described, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of a multi-node service information processing method based on a lift-off platform according to the present invention;
FIG. 2 is a schematic diagram of a particular embodiment of a lift-off platform based multi-node business information processing network of the present invention;
FIG. 3 is a schematic diagram showing another embodiment of the multi-node service information processing method based on the lift-off platform of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely configured to illustrate the invention and are not configured to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
As shown in fig. 1, the present invention provides an embodiment of a multi-node service information processing method based on a lift-off platform, including:
s101, building a ground-to-air information link, integrating a laser communication system, a laser time service system and the like into the same optical load, carrying the same on a lift-off platform as a multi-service information node, and building a stable and reliable free space optical link for a ground station and the lift-off platform by using an accurate tracking system;
s102, the ground station transmits communication data, navigation positioning data and time service control signals to the lift-off platform through the link, so that the lift-off platform is ensured to be in communication with the fixed network, the self position can be determined in real time, and the clock is consistent with the clock of the fixed network;
s103, establishing an air-to-ground information link, wherein a multi-service information node on the lift-off platform establishes a stable and reliable free space optical link with a plurality of ground maneuvering nodes far away from the ground station by utilizing the accurate tracking system, and the multi-service information node transmits communication data, navigation positioning data and time service control signals to the ground maneuvering nodes through secondary links.
In some embodiments, the ground station transmits communication data, navigation positioning data and time service control signals to the lift-off platform through the link to ensure that the lift-off platform is in communication with the fixed network, can determine the self position in real time, and has a clock consistent with the fixed network clock.
In some embodiments, a laser communication system is used to establish data communication with a ground station.
In some embodiments, the laser timing system calculates the clock difference between the lift-off platform and the ground station by sending and receiving optical pulse signals to complete time synchronization between the lift-off platform clock and the ground station clock.
In some embodiments, an optical clock, an optical inertial navigation system, is also integrated into the optical load.
As shown in fig. 2, the embodiment further provides a multi-node service information processing network based on the lift-off platform, which comprises the following implementation steps:
1. the ground station establishes a reliable and stable optical link with the multi-service information node of the lift-off platform through the accurate tracking system, and the ground station is connected with a fixed network;
2. the multi-service information node of the lift-off platform integrates various information systems, including but not limited to a laser communication system, a navigation positioning system and a laser time service system: the laser communication system is used for establishing data communication with the ground station; the laser time service system mainly calculates clock difference between the lift-off platform and the ground station by sending and receiving optical pulse signals, and completes time synchronization between the lift-off platform clock and the ground station clock; the navigation positioning system has various working modes, and a typical working mode is that the lift-off platform sends signals to three ground stations and receives return signals, the distance between the return signals and the three ground stations is judged by analyzing the return signals, and the position of the lift-off platform is determined according to the space coordinates of the three ground stations;
3. the multi-service information node of the lift-off platform establishes reliable and stable optical links with a plurality of ground maneuvering nodes (represented by vehicles in the figure) far away from the ground station through the accurate tracking system to execute various service functions, in particular:
(1) The ground maneuvering nodes can establish communication interconnection with the fixed communication network through the multi-service information nodes of the lift-off platform, and the ground maneuvering nodes can establish communication interconnection with each other through the multi-service information nodes of the lift-off platform;
(2) The laser time service, the ground maneuvering node calculates the clock difference of the lift-off platform by sending and receiving the optical pulse signal, and completes the time synchronization with the lift-off platform clock (namely the ground station);
(3) Navigation positioning, wherein a ground maneuvering node receives position coordinates transmitted by three lift-off platforms through laser communication (the position coordinates are determined by the ground station), the ground maneuvering node transmits signals to the three lift-off platforms and receives return signals, determines the distance between the ground maneuvering node and the three lift-off platforms through analysis of the return signals, and determines the position of the ground maneuvering node according to the received space coordinates of the three lift-off platforms
4. In view of the fact that all the above processes use optical waves as information carriers, and the multi-service information node of the lift-off platform can be made into an electromagnetic shielding structure with an optical aiming outlet, the multi-service information node can have operation capability under the condition of strong electromagnetic interference.
As shown in fig. 3, this embodiment shows an embodiment of a multi-node service information processing method based on a lift-off platform, which specifically includes:
s201, integrating a laser communication system, a laser time service system, an optical clock, optical inertial navigation and the like into the same optical system, realizing the transmission of free space optical signals through a shared tracking system, upgrading an information processing module matched with the optical system into a multi-service information node, and carrying out lift-off through a lift-off platform to provide a medium for the establishment of an information link between two ground nodes which are far apart;
s202, a free space optical link is established between one or more ground stations and a multi-service information node of the lift-off platform, so that functions of laser communication data transmission, laser time synchronization, laser navigation positioning and the like are developed, and the final achieved effect is that the multi-service information node of the lift-off platform is topologically connected with a fixed communication network, a carried clock is consistent with a clock of the fixed communication network, and the self-position is known in real time;
s203, a free space optical link is established between one or more lift-off platforms and one or more ground maneuvering nodes at the other place, functions such as laser communication data transmission, laser time synchronization, laser navigation positioning and the like are developed, and finally the effect is achieved that the ground maneuvering platforms are topologically connected with a fixed communication network, can be in communication interconnection with each other, and carry clocks are consistent with the clocks of the fixed communication network, and are aware of the positions of the ground maneuvering platforms in real time.
The invention also provides an embodiment of a multi-node service information processing method based on the lift-off platform, which integrates a laser communication system, a laser time service system and the like into the same optical load, so that service functions such as laser communication data information, navigation information receiving and transmitting, optical time synchronization and the like can share the same optical link and a tracking system, and different service information services are provided for a plurality of targets on the ground according to actual requirements.
In some embodiments, in the laser communication, both communication parties establish a free space optical link through a tracking system, and a laser pulse signal is used as a carrier to carry out communication coding and decoding, so that the communication signal can be stably transmitted under the condition of strong electromagnetic interference, the specific structure, the light source, the detector, the coding protocol and the working band of the laser communication system are not limited, and the information protocol adopted in the laser communication networking is not limited.
In some embodiments, the time synchronization information is compiled into the optical signal, the time synchronization is realized through the transmission of the optical signal, the time synchronization needs to be equipped with a high-precision clock and calibrated by taking the clock as a reference, the specific scheme and parameter indexes of the time synchronization are not limited, the implementation mode and standard protocol of the time synchronization system are not limited, and the method for realizing the clock difference calculation and the phase control of the two clocks through the transmission and the processing of the optical signal is within the scope of the claims of the invention.
In some embodiments, a platform with an unknown position in the navigation information transceiving process sends optical signals to three platforms with known positions and receives back, the distances between the platform with the known positions and the three platforms are judged by analyzing back-back delay, the self position is calculated according to the specific position of the platform with the known position, the positioning and navigation functions are completed, or the self position is determined by a third party through other means, and then navigation positioning message information is sent through laser communication signals, so that the positioning and navigation functions are completed.
In some embodiments, a laser communication system, a laser time service system, an optical clock, optical inertial navigation and the like are integrated into the same optical system in the multi-service information node, free space optical signal transmission is realized through a shared tracking system, an information processing module matched with the optical system is updated into the multi-service information node, and a lift-off platform is carried and lifted off to provide a medium for establishing an information link between two ground nodes which are far apart from each other; the free space optical link is established between one or more ground stations and the multi-service information node of the lift-off platform, so that the functions of laser communication data transmission, laser time synchronization, laser navigation positioning and the like are developed, and the final effect is that the multi-service information node of the lift-off platform is topologically connected with a fixed communication network, the carried clock is consistent with the clock of the fixed communication network, and the self position is known in real time; the free space optical link is established between one or more lift-off platforms and one or more ground maneuvering nodes at the other place, so that the functions of laser communication data transmission, laser time synchronization, laser navigation positioning and the like are developed, and the final effect is that the ground maneuvering platforms are topologically connected with a fixed communication network, can be in communication interconnection with each other, have the carried clocks consistent with the clocks of the fixed communication network and know the positions of the ground maneuvering platforms in real time. All the optical service information platforms are integrated into the same optical system capable of electromagnetic shielding, and the technology of switching different service functions according to actual requirements belongs to the scope of the claims of the invention.
Compared with the prior art, the invention has the following advantages:
firstly, the invention provides an all-optical multi-service information node which can support a plurality of service information functions such as data communication, time synchronization, navigation positioning and the like under the condition of strong electromagnetic interference;
secondly, in view of the fact that the tracking and aiming system occupies most of the load balance weight of the optical system, the design concept of the multiplexing optical system is provided, and the system load can be greatly compressed;
finally, the invention provides a design concept of lifting the multi-service information node to run, greatly expands the coverage range of the multi-service information node, and can provide information guarantee for maneuvering targets in a larger range.
For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in one or more software and/or hardware elements when implemented in the present application.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer 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 technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. A multi-node service information processing method based on a lift-off platform is characterized in that a laser communication system, a navigation positioning system and a laser time service system are integrated into the same optical load, the laser communication system, the navigation positioning system and the laser time service system are mounted on the lift-off platform to serve as multi-service information nodes, a free space optical link is established for a ground station and the lift-off platform by using an accurate tracking system, the ground station transmits communication data, navigation positioning data and time service control signals to the lift-off platform through the link, the multi-service information nodes on the lift-off platform establish free space optical links with a plurality of ground maneuvering nodes far away from the ground station by using the accurate tracking system, and the multi-service information nodes transmit the communication data, the navigation positioning data and the time service control signals to the ground maneuvering nodes through secondary links.
2. The lift-off platform-based multi-node service information processing method according to claim 1, wherein the ground station transmits communication data, navigation positioning data and time service control signals to the lift-off platform through the link, so that the lift-off platform is ensured to be in communication interconnection with a fixed network, and the self position, clock and fixed network clock can be determined in real time.
3. The lift-off platform based multi-node service information processing method according to claim 1, wherein the laser communication system is used for establishing data communication with a ground station.
4. The lift-off platform based multi-node service information processing method according to claim 1, wherein the laser timing system calculates a clock difference between the lift-off platform and the ground station by transmitting and receiving an optical pulse signal, and completes time synchronization between a lift-off platform clock and a ground station clock.
5. The lift-off platform-based multi-node service information processing method according to claim 1, wherein an optical clock and an optical inertial navigation system are integrated in the optical load.
6. The lift-off platform-based multi-node service information processing method according to claim 1, wherein the method specifically comprises the following steps:
s1, integrating a laser communication system, a laser time service system, an optical clock, optical inertial navigation and other equipment into the same optical system, realizing the transmission of free space optical signals through a shared tracking system, upgrading an information processing module matched with the optical system into a multi-service information node, carrying out lift-off through a lift-off platform, and providing a medium for the establishment of an information link between two ground nodes which are far apart;
s2, a free space optical link is established between one or more ground stations and a multi-service information node of the lift-off platform, so that laser communication data transmission, laser time synchronization and laser navigation positioning functions are developed;
s3, the multi-service information node of the lift-off platform is topologically connected with a fixed communication network, the carried clock is consistent with the clock of the fixed communication network, the self position is known in real time, and the ground mobile platform is topologically connected with the fixed communication network and can be mutually communicated and interconnected.
7. The lift-off platform-based multi-node service information processing method according to claim 6, wherein the ground mobile nodes establish communication interconnection with the fixed communication network through the lift-off platform multi-service information nodes, and the ground mobile nodes can establish communication interconnection with each other through the lift-off platform multi-service information nodes.
8. The lift-off platform based multi-node service information processing method according to claim 6, wherein the ground power node calculates a clock difference with the lift-off platform by transmitting and receiving an optical pulse signal, and performs time synchronization with the lift-off platform clock.
9. The lift-off platform based multi-node service information processing method according to claim 6, wherein the ground mobile node receives position coordinates transmitted by the three lift-off platforms through laser communication, the ground mobile node transmits signals to the three lift-off platforms and receives return signals, determines distances between the three lift-off platforms by analyzing the return signals, and determines the position of the ground mobile node according to the received space coordinates of the three lift-off platforms.
10. A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the method of any of claims 1-9.
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