CN114726432A - Intelligent clock control and management method for space-based intelligent networking - Google Patents
Intelligent clock control and management method for space-based intelligent networking Download PDFInfo
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Abstract
The invention relates to the field of satellite clock synchronization, and discloses a space-based intelligent network intelligent clock control and management method, wherein an intelligent clock network architecture is established according to the invention, and comprises the following steps: a control management plane and a synchronous transfer plane; establishing a two-stage structure of a synchronous domain control manager and a synchronous network centralized control management system on a control management plane; constructing a satellite clock and a clock source in a synchronous transmission plane, performing distributed computation of consistent clock synchronization by using inter-satellite/satellite-ground link measurement information in the synchronous transmission plane, and sending measurement state information to the synchronous domain control manager; clock synchronization information in a certain clock domain is collected and processed in a synchronous domain control manager, the synchronous domain control manager is connected with a synchronous network centralized control management system through a northbound interface, the whole satellite clock network information is collected and processed, and the control management information is issued to corresponding satellite clock nodes through the synchronous domain control manager.
Description
Technical Field
The application relates to the field of satellite clock synchronization, in particular to a space-based intelligent networking intelligent clock control and management method.
Background
The satellite network clock synchronization mode mainly comprises GNSS time service, time transmission based on structural network topology and distributed clock synchronization. At present, a satellite network clock synchronization system mainly depends on the current GNSS, each satellite and the GNSS keep time synchronization, and therefore time synchronization of the whole network is achieved. The time transfer based on the structural network topology is carried out by pairwise comparison between primary and secondary nodes, the mechanism is simple, the convergence speed is high, but when the network topology changes or the nodes fail, a time transfer path needs to be planned again, so that the system maintenance cost is high, the robustness and the expandability are relatively insufficient, and the time transfer is only suitable for the conditions that the number of satellites is small and the network topology changes slightly.
The dynamic self-organized elastic decentralized space-based system node network topology structure provides challenges for high-precision networking synchronization. The clock synchronization protocol of the traditional inter-satellite/satellite-ground link is mainly a structural algorithm and generally comprises two steps: firstly, establishing synchronization between two inter-satellite/inter-satellite neighboring nodes; a multi-hop topology is then constructed so that this synchronization can be delivered layer by layer to all inter-satellite/earth-satellite link nodes. However, the structural clock synchronization protocol is overloaded in building and maintaining a tree or cluster structure, and in addition, the failure of the root node or the gateway node can cause a large number of node divergence failures connected with the root node or the gateway node, so that the expandability and the robustness of the protocol are all deficient.
Therefore, how to solve the typical star ring, star and mesh inter-star/satellite-ground network topologies, the existence of differential time delay in the inter-star/satellite-ground network directed communication topology and the network becomes a technical problem to be solved urgently.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a space-based intelligent networking intelligent clock control and management method, and aims to solve the technical problems that the prior art cannot solve the typical star cluster ring, star and mesh inter-star/satellite-ground network topologies, and the inter-star/satellite-ground network directional communication topology and the network have differentiated time delay.
In order to achieve the above object, the present invention provides a method for controlling and managing an intelligent clock of a space-based intelligent networking, wherein the method comprises:
establishing an intelligent clock network architecture, the intelligent clock network architecture comprising: a control management plane and a synchronous transfer plane;
establishing a two-stage structure of a synchronous domain control manager and a synchronous network centralized control management system in the control management plane;
constructing a satellite clock and a clock source in the synchronous transmission plane, performing distributed computation of consistent clock synchronization in the synchronous transmission plane by using inter-satellite/satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager;
and after the whole satellite clock network information is collected and processed, the control management information is issued to the corresponding satellite clock node through the synchronous domain control manager.
Optionally, the establishing a smart clock network architecture includes: after the step of controlling the management plane and the synchronous transfer plane, the method further comprises:
and performing clock synchronization in the intelligent clock network architecture by adopting a distributed clock synchronization mode.
Optionally, the step of performing clock synchronization in the intelligent clock network architecture by using a distributed clock synchronization manner includes:
obtaining relative time difference measurements Δ τ of each satellite and adjacent satellite clocks in the synchronous transfer planeijAnd relative frequency measurement value deltafij；
Distributed calculation is carried out by utilizing an intelligent synchronization protocol, and the time deviation alpha of the clock of the self-estimation device is estimatediAnd a frequency deviation betaiA parameter;
and performing clock compensation on the satellite logic clock based on the estimation parameters, and controlling to achieve the satellite network logic clock consistency through preset times of iterative measurement.
Optionally, the step of establishing a two-stage structure of a synchronization domain control manager and a synchronization network centralized control management system in the control management plane includes:
establishing a synchronous domain control manager in the control management plane, wherein the synchronous domain control manager is responsible for configuring domain synchronization strategies, planning synchronous transmission links, synchronously alarming and recovering faults, evaluating the health of main and standby clock sources, managing synchronous measurement links and monitoring the synchronization performance in real time in a preset area, and the synchronous domain control manager is responsible for one or more satellites;
and establishing a synchronous network centralized control management system structure, and taking charge of overall control and deployment at one or more satellite/ground stations.
Optionally, the step of establishing a synchronous network centralized control management system structure includes:
and establishing a synchronous network centralized control management system structure which is responsible for synchronous network and link planning strategies, network access control and load balancing, synchronous transmission hierarchical system management, synchronous performance detection and forecast, synchronous inter-domain cooperation and scheduling, synchronous alarm and fault recovery and deployment at one or more satellite/ground stations.
Optionally, after the steps of constructing a satellite clock and a clock source in the synchronous transfer plane, performing distributed computation of coherent clock synchronization in the synchronous transfer platform by using inter-satellite/inter-satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager, the method further includes:
and finishing the broadcasting of global time information and the extraction of information receiving and sending time stamps on the synchronous transfer plane, and dividing the satellite nodes into four different roles according to the function difference of the satellite nodes: a reference clock node, a timestamp measurement node, a clock transfer node and a common clock node.
Optionally, the broadcasting of the global time information and the extraction of the timestamp of the received and transmitted information are completed, and the satellite nodes are divided into four different roles according to the functional differences of the satellite nodes: after the steps of the reference clock node, the timestamp measurement node, the clock transmission node and the common clock node, the method further comprises the following steps:
constructing a clock network service system based on a medium/low orbit constellation, and constructing a clock reference network, a clock backbone network and a clock access network in the clock network service system;
tracing to a ground reference station or a GNSS clock, and realizing high-precision unified clock reference inside a constellation through synchronous control of a distributed network clock.
In addition, in order to achieve the above object, the present invention further provides an intelligent clock control and management device for space-based intelligent network, the device comprising:
an intelligent network architecture unit for establishing an intelligent clock network architecture, the intelligent clock network architecture comprising: a control management plane and a synchronous transfer plane;
the two-level structure unit is used for establishing a two-level structure of a synchronous domain control manager and a synchronous network centralized control management system in the control management plane;
the synchronous transmission plane module is used for constructing a satellite clock and a clock source in the synchronous transmission plane, performing distributed computation of consistent clock synchronization in the synchronous transmission platform by using inter-satellite/satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager;
and the synchronous domain control manager module is used for collecting and processing clock synchronization information in a certain clock domain in the synchronous domain control manager, connecting the synchronous domain control manager module with a synchronous network centralized control management system through a northbound interface, and issuing control management information to corresponding satellite clock nodes through the synchronous domain control manager after collecting and processing the whole satellite clock network information.
In addition, to achieve the above object, the present invention also provides a computer device, including: the system comprises a memory, a processor and a space-based intelligent networking intelligent clock control and management program stored on the memory and capable of running on the processor, wherein the space-based intelligent networking intelligent clock control and management program is configured to realize the space-based intelligent networking intelligent clock control and management method.
In addition, to achieve the above object, the present invention further provides a medium, on which a space-based intelligent network intelligent clock control and management program is stored, wherein the space-based intelligent network intelligent clock control and management program, when executed by a processor, implements the steps of the space-based intelligent network intelligent clock control and management method as described above.
The invention is based on establishing an intelligent clock network architecture, which comprises: a control management plane and a synchronous transfer plane; establishing a two-stage structure of a synchronous domain control manager and a synchronous network centralized control management system in the control management plane; constructing a satellite clock and a clock source in the synchronous transmission plane, performing distributed computation of consistent clock synchronization in the synchronous transmission plane by using inter-satellite/satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager; the distributed clock synchronization algorithm based on the multi-agent cooperative intelligent control theory is elastically distributed, does not need to depend on a set topological structure, does not depend on a root node or a reference node, has stronger robustness and expandability, solves the problems of typical star-shaped, star-shaped and netlike inter-star/earth network topologies, and has differential time delay in inter-star/earth network directed communication topologies and networks.
Drawings
FIG. 1 is a schematic structural diagram of a space-based intelligent networking intelligent clock control and management device of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a method for controlling and managing an intelligent clock of a space-based intelligent network according to the present invention;
FIG. 3 is a diagram of a network architecture of a satellite intelligent clock according to a first embodiment of the space-based intelligent network intelligent clock control and management method of the present invention;
fig. 4 is a schematic diagram of distributed intelligent clock synchronization of a satellite network according to a first embodiment of the method for controlling and managing an intelligent clock of a space-based intelligent network of the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a space-based intelligent network intelligent clock control and management device of a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the space-based intelligent network intelligent clock control and management device may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to implement connection communication among these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (WI-FI) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory, or may be a Non-Volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the architecture shown in FIG. 1 does not constitute a limitation of a space-based intelligent network smart clock control and management device, and may include more or fewer components than those shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, the memory 1005, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and a space-based intelligent network smart clock control and management program.
In the space-based intelligent networking smart clock control and management device shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the space-based intelligent networking intelligent clock control and management device of the invention can be arranged in the space-based intelligent networking intelligent clock control and management device, and the space-based intelligent networking intelligent clock control and management device calls the space-based intelligent networking intelligent clock control and management program stored in the memory 1005 through the processor 1001 and executes the space-based intelligent networking intelligent clock control and management method provided by the embodiment of the invention.
An embodiment of the present invention provides a method for controlling and managing an intelligent clock of a space-based intelligent network, and referring to fig. 2, fig. 2 is a schematic flow diagram of a first embodiment of the method for controlling and managing the intelligent clock of the space-based intelligent network.
In this embodiment, the space-based intelligent networking intelligent clock control and management method includes the following steps:
step S10: establishing an intelligent clock network architecture, the intelligent clock network architecture comprising: a control management plane and a synchronous delivery plane.
In specific implementation, the space-based intelligent networking system is a high-speed dynamic and quick-response intelligent agile system, and needs to realize high-speed data transmission, dynamic resource sharing, distributed computation and distributed signal level coordination, and is not independent of an intelligent elastic high-precision clock reference. The high-precision intelligent clock reference establishing technology supports the applications of distributed coherent detection, multi-source cooperative detection, distributed agile waveform generation and the like. In the elastic decentralized constellation formation cooperative interconnection system, constellation formations mutually form a virtual MIMO system, and transmitting antennas are mutually scattered to form a distributed MIMO system. Different from the traditional MIMO technology in which the transmitting antenna and the receiving antenna belong to the same terminal, the multiple transceivers of the distributed inter-satellite/satellite-ground link belong to different nodes and are mutually independent, and the cooperative transmission needs to be completed by synchronizing the multi-node signal clock. Both the clock and frequency dumb and time-varying on each node can be modeled as time-varying channel characteristics relative to an ideal channel. The basic challenge in achieving distributed beamforming is that independent clock drift and independent transmitter motion can produce highly non-stationary channels, and distributed beamforming performance can drop dramatically if the feedback delay from the receiver is longer than if the dynamic channel were to remain constant. Therefore, to implement multi-transceiver cooperative beamforming, a high-precision distributed clock pre-synchronization and prediction into inter-planet/space-ground link multi-transceiver nodes is first required.
It should be noted that, because a huge number of constellations exhibit the topological characteristic of a mesh structure, the time synchronization node is large in scale, the clock performance levels are multiple, and the transfer modes are variable, so that in the aspects of constellation time reference establishment and maintenance, a satellite network clock synchronization control based on a distributed clock synchronization mode should be adopted, and meanwhile, clock synchronization is not coupled with orbit determination, so as to ensure the satellite clock network synchronization performance under any topology. The time synchronization network is one of the essential support networks of the low-orbit massive constellation, provides a low-cost high-precision time reference for the low-orbit constellation through an inter-satellite/satellite-ground link network, and can provide powerful guarantee for intelligent networking cooperation of the satellite. However, the low-orbit massive constellation has the problems of large dynamic change of network topology, complex path configuration of a synchronous network, difficult fault management and performance detection and the like, the complexity of synchronous planning and maintenance is greatly increased compared with the ground space-time reference transmission network, and a lot of pressure is faced in the process of establishing, maintaining and operating a clock synchronous network by a satellite autonomously. In order to solve the above problems, an intelligent clock network architecture based on centralized control and management is considered. The intelligent clock controls and manages the synchronous network from a source to a terminal and across domains, can automatically and accurately carry out synchronous planning, quickly and efficiently discover hidden troubles of the current clock network configuration, carry out automatic synchronous recovery and alarm positioning, and realize real-time monitoring of synchronous performance, thereby enhancing the safe and reliable operation of the synchronous network and improving the operation and maintenance management efficiency of the synchronous network.
Further, the establishing of the intelligent clock network architecture comprises: after the step of controlling the management plane and the synchronous transfer plane, the method further comprises: and performing clock synchronization in the intelligent clock network architecture by adopting a distributed clock synchronization mode.
Further, the step of performing clock synchronization in the intelligent clock network architecture by using a distributed clock synchronization method includes: obtaining relative time difference measurements Δ τ of each satellite and adjacent satellite clocks in the synchronous transfer planeijAnd relative frequency measurement value deltafij(ii) a Distributed calculation is carried out by utilizing an intelligent synchronization protocol, and the time deviation alpha of the clock of the self-estimation device is estimatediAnd a frequency deviation betaiA parameter; and performing clock compensation on the satellite logic clock based on the estimation parameters, and controlling to achieve the satellite network logic clock consistency through preset times of iterative measurement.
Step S20: and establishing a two-stage structure of a synchronous domain control manager and a synchronous network centralized control management system in the control management plane.
In a specific implementation, the smart clock network architecture, as shown in fig. 3, is composed of a control management plane and a synchronous transport plane. The control management plane supports a hierarchical multi-level structure, and comprises a synchronous domain control manager and a synchronous network centralized control management system (domain controller) two-level structure. And the synchronous domain control manager is responsible for managing and controlling multi-domain synchronous networks in the whole network range, and performs synchronous management and control information interaction with each synchronous network centralized control management system through a northbound interface to complete the functions of end-to-end planning, cross-domain alarm, source tracing and the like of cooperation among multiple domains. Meanwhile, the centralized control management system collects and processes the information of the instant satellite clock network and sends the information to the satellite clock nodes through the satellite synchronous network centralized control management system. The synchronous network centralized control management system (domain controller) is responsible for managing and controlling the synchronous network in a single domain range, and comprises the steps of collecting topological information, synchronous configuration and state information of the instant satellite network, analyzing, calculating and processing according to the collected information, and issuing the synchronous configuration to the intra-domain satellite. The synchronous network centralized control management system of different satellite clocks can adopt clocks of different manufacturers and performance levels. The synchronous transmission plane is composed of distributed satellite clocks, clock sources (GNSS clocks and the like) and other nodes, inter-satellite/satellite-ground link measurement information can be fully utilized based on distributed network clock synchronization, and end-to-end high-precision clock synchronization and time service are achieved.
Further, the step of establishing a two-stage structure of a synchronization domain control manager and a synchronization network centralized control management system in the control management plane includes: establishing a synchronous domain control manager in the control management plane, wherein the synchronous domain control manager is responsible for configuring domain synchronization strategies, planning synchronous transmission links, synchronously alarming and recovering faults, evaluating the health of main and standby clock sources, managing synchronous measurement links and monitoring the synchronization performance in real time in a preset area, and the synchronous domain control manager is responsible for one or more satellites; and establishing a synchronous network centralized control management system structure, and taking charge of overall control and deployment at one or more satellite/ground stations.
Further, the step of establishing a synchronous network centralized control management system structure includes: and establishing a synchronous network centralized control management system structure which is responsible for synchronous network and link planning strategies, network access control and load balancing, synchronous transmission hierarchy management, synchronous performance detection and prediction, synchronous inter-domain cooperation and scheduling, synchronous alarm and fault recovery and deployment at one or more satellite/ground stations.
In particular implementations, as shown in FIG. 4, the relative time difference measurements Δ τ of each satellite and the clocks of neighboring satellites are measuredijAnd relative frequency measurement value deltafijTaking the obtained data as system input, performing distributed calculation by using an intelligent synchronization protocol, and estimating the time deviation alpha of the clock of the systemiAnd a frequency deviation betaiAnd performing clock compensation on the satellite logic clock based on the estimated parameters, and controlling to achieve the satellite network logic clock consistency through multiple iterative measurements.
Step S30: and constructing a satellite clock and a clock source in the synchronous transmission plane, performing distributed computation of consistent clock synchronization in the synchronous transmission platform by using inter-satellite/satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager.
Further, after the steps of constructing a satellite clock and a clock source in the synchronous transfer plane, performing distributed computation of coherent clock synchronization in the synchronous transfer platform by using inter-satellite/inter-satellite link measurement information, and sending measurement state information to the synchronous domain control manager, the method further includes: and completing the broadcasting of global time information and the extraction of information receiving and sending time stamps on the synchronous transfer plane, and dividing the satellite nodes into four different roles according to the functional differences of the satellite nodes: a reference clock node, a timestamp measurement node, a clock transfer node and a common clock node.
Further, the broadcasting of the global time information and the extraction of the timestamp of the received and transmitted information are completed, and the satellite nodes are divided into four different roles according to the functional differences of the satellite nodes: after the steps of the reference clock node, the timestamp measurement node, the clock transmission node and the common clock node, the method further comprises the following steps: constructing a clock network service system based on a medium/low orbit constellation, and constructing a clock reference network, a clock backbone network and a clock access network in the clock network service system; tracing to a ground reference station or a GNSS clock, and realizing high-precision unified clock reference inside a constellation through synchronous control of a distributed network clock.
Further, the broadcasting of the global time information and the extraction of the time stamp of the received and transmitted information are completed, and the satellite nodes are divided into four different roles according to the functional differences of the satellite nodes: after the steps of the reference clock node, the timestamp measurement node, the clock transmission node and the common clock node, the method further comprises the following steps: constructing a clock network service system based on a medium/low orbit constellation, and constructing a clock reference network, a clock backbone network and a clock access network in the clock network service system; tracing to a ground reference station or a GNSS clock, and realizing high-precision unified clock reference inside a constellation through synchronous control of a distributed network clock.
Step S40: and after the whole satellite clock network information is collected and processed, the control management information is issued to the corresponding satellite clock node through the synchronous domain control manager.
It should be noted that, with the improvement of the computing power of the satellite-borne processor and the transmission capability of the space-based information network, the technologies of the intelligent network satellite and the like are continuously mature, and the satellite system has strong onboard information processing and information fusion capabilities, so that the satellite node can collect more accurate and timely information such as the whole network topology, the ephemeris forecast, the task planning, the health state, the environment monitoring and the like. With this information, the satellite network can provide more accurate correction of inter-satellite/inter-satellite measurements and better robustness to network clock synchronization control. Therefore, on the basis of centralized control management of the satellite clock network, the satellite network clock can adopt a distributed clock synchronization mode. Meanwhile, the development of the theory and the method related to the intelligent problem of the multi-agent system provides a powerful tool for the distributed clock synchronization algorithm. The satellite is taken as a typical autonomous and semi-autonomous system, the satellite network clock synchronization is essentially a clock intelligent problem, the system has the general characteristics of a multi-agent system, a second-order or high-order model of the clock is constructed based on the multi-agent intelligent theory, the time synchronization is expanded to be time and frequency synchronization, and a distributed synchronization algorithm is adopted, so that the relative measurement and state information of a plurality of adjacent nodes can be utilized for fusion. Thus, the model is more accurate and the information is more comprehensive, thereby providing higher synchronization accuracy.
This embodiment is based on establishing an intelligent clock network architecture, which includes: a control management plane and a synchronous transfer plane; establishing a two-stage structure of a synchronous domain control manager and a synchronous network centralized control management system in the control management plane; constructing a satellite clock and a clock source in the synchronous transmission plane, performing distributed computation of consistent clock synchronization in the synchronous transmission plane by using inter-satellite/satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager; the distributed clock synchronization algorithm based on the multi-agent cooperative intelligent control theory is elastically distributed, does not need to depend on a set topological structure, does not depend on a root node or a reference node, has stronger robustness and expandability, solves the problems of typical star-shaped, star-shaped and netlike inter-star/earth network topologies, and has differential time delay in inter-star/earth network directed communication topologies and networks.
In addition, an embodiment of the present invention further provides a medium, where a space-based intelligent network intelligent clock control and management program is stored, and when being executed by a processor, the space-based intelligent network intelligent clock control and management program implements the steps of the space-based intelligent network intelligent clock control and management method described above.
The embodiments or specific implementations of the space-based intelligent networking intelligent clock control and management device of the present invention may refer to the above method embodiments, and are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system 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 system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or system in which the element is included.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A space-based intelligent networking intelligent clock control and management method, characterized in that the method comprises:
establishing an intelligent clock network architecture, the intelligent clock network architecture comprising: a control management plane and a synchronous transfer plane;
establishing a two-stage structure of a synchronous domain control manager and a synchronous network centralized control management system in the control management plane;
constructing a satellite clock and a clock source in the synchronous transmission plane, performing distributed computation of consistent clock synchronization in the synchronous transmission plane by using inter-satellite/satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager;
and after the whole satellite clock network information is collected and processed, the control management information is issued to the corresponding satellite clock node through the synchronous domain control manager.
2. The method of claim 1, wherein the establishing a smart clock network architecture comprises: after the step of controlling the management plane and the synchronous transfer plane, the method further comprises:
and performing clock synchronization in the intelligent clock network architecture by adopting a distributed clock synchronization mode.
3. The method of claim 2, wherein the step of performing clock synchronization in a distributed clock synchronization manner in the smart clock network architecture comprises:
obtaining relative time difference measurements Δ τ of each satellite and adjacent satellite clocks in the synchronous transfer planeijAnd relative frequency measurement value deltafij；
Distributed calculation is carried out by utilizing an intelligent synchronization protocol, and the time deviation alpha of the clock of the self-estimation device is estimatediAnd a frequency deviation betaiA parameter;
and performing clock compensation on the satellite logic clock based on the estimation parameters, and controlling to achieve the satellite network logic clock consistency through preset times of iterative measurement.
4. The method of claim 1, wherein the step of establishing a two-level structure of a synchronization domain control manager and a synchronization network centralized control management system in the control management plane comprises:
establishing a synchronous domain control manager in the control management plane, wherein the synchronous domain control manager is responsible for configuring domain synchronization strategies, planning synchronous transmission links, synchronously alarming and recovering faults, evaluating the health of main and standby clock sources, managing synchronous measurement links and monitoring the synchronization performance in real time in a preset area, and the synchronous domain control manager is responsible for one or more satellites;
and establishing a synchronous network centralized control management system structure, and taking charge of overall control and deployment at one or more satellite/ground stations.
5. The method of claim 4, wherein the step of establishing a synchronous network centralized control management system architecture comprises:
and establishing a synchronous network centralized control management system structure which is responsible for synchronous network and link planning strategies, network access control and load balancing, synchronous transmission hierarchy management, synchronous performance detection and prediction, synchronous inter-domain cooperation and scheduling, synchronous alarm and fault recovery and deployment at one or more satellite/ground stations.
6. The method of claim 1, wherein the step of constructing a satellite clock and clock source in the synchronous delivery plane, performing distributed computation of coherent clock synchronization in the synchronous delivery platform using inter-satellite/inter-satellite link measurement information, and sending measurement status information to the synchronous domain control manager further comprises:
and finishing the broadcasting of global time information and the extraction of information receiving and sending time stamps on the synchronous transfer plane, and dividing the satellite nodes into four different roles according to the function difference of the satellite nodes: a reference clock node, a timestamp measurement node, a clock transfer node, and a common clock node.
7. The method as claimed in claim 6, wherein the broadcasting of the global time information and the extraction of the time stamps of the transceiving information are accomplished by dividing the satellite nodes into four different roles according to functional differences of the satellite nodes: after the steps of the reference clock node, the timestamp measurement node, the clock transmission node and the common clock node, the method further comprises the following steps:
constructing a clock network service system based on a medium/low orbit constellation, and constructing a clock reference network, a clock backbone network and a clock access network in the clock network service system;
tracing to a ground reference station or a GNSS clock, and realizing high-precision unified clock reference inside a constellation through synchronous control of a distributed network clock.
8. An space-based intelligent networking intelligent clock control and management apparatus, the apparatus comprising:
an intelligent architecture unit for establishing an intelligent clock network architecture, the intelligent clock network architecture comprising: a control management plane and a synchronous transfer plane;
the two-stage structure unit is used for establishing a two-stage structure of a synchronous domain control manager and a synchronous network centralized control management system in the control management plane;
the synchronous transmission plane module is used for constructing a satellite clock and a clock source in the synchronous transmission plane, performing distributed computation of consistent clock synchronization in the synchronous transmission platform by using inter-satellite/satellite-ground link measurement information, and sending measurement state information to the synchronous domain control manager;
and the synchronous domain control manager module is used for collecting and processing clock synchronization information in a certain clock domain in the synchronous domain control manager, connecting the synchronous domain control manager module with a synchronous network centralized control management system through a northbound interface, and issuing control management information to corresponding satellite clock nodes through the synchronous domain control manager after collecting and processing the whole satellite clock network information.
9. An space-based intelligent networking smart clock control and management device, the device comprising: a memory, a processor and a space-based intelligent networking smart clock control and management program stored on the memory and executable on the processor, the space-based intelligent networking smart clock control and management program configured to implement the steps of the space-based intelligent networking smart clock control and management method of any of claims 1 to 7.
10. A medium having stored thereon a space based intelligent network smart clock control and management program which, when executed by a processor, performs the steps of the space based intelligent network smart clock control and management method of any of claims 1 to 7.
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