Space ground resource networking cloudification implementation method based on NFV and SDN technology

Abstract

The application provides a space ground resource networking cloud implementation method based on NFV and SDN technology. By combining the control and arrangement center with station-level control and arrangement, the access station front end and resource pool can execute space TT&C tasks according to the task requirements of space TT&C tasks, and can also dynamically allocate resources such as baseband and signal processing according to the needs of measurement and operation control business. Secondly, combined with software-defined network, the processing capacity of heterogeneous or remote devices can be flexibly combined according to the needs, thereby solving the problems of tight coupling of software and hardware, high degree of closure, low system flexibility, long business deployment time and high operation cost under the traditional "chimney" type space ground station structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of spaceflight TT&C (Tracking, Telemetry and Command) and satellite communication, in particular to a method for implementing networking of spaceflight ground resources based on NFV (Network Function Virtualization) and SDN (Software Defined Network) technology. BACKGROUND

[0002] With the continuous progress of science and technology, the demand of human beings for space exploration is also increasing, which promotes the continuous updating and development of spaceflight ground TT&C system. At present, the spaceflight ground TT&C station adopts a chimney structure, and usually multiple sets of TT&C devices are deployed in one TT&C station, and each set of TT&C device independently performs TT&C tasks. However, since there is no sharing mechanism between each set of TT&C system, each set of TT&C system is isolated, and the TT&C resources in the TT&C station cannot be fully utilized.

[0003] In the prior art, the above problem is solved by using an integrated baseband, and the integrated baseband is usually developed by using a special hardware platform represented by DSP (Digital Signal Processor) and FPGA (Field Programmable Gate Array). At the system level, since the special hardware platform lacks a unified standard, the software and hardware functions cannot be separated, thereby causing high product upgrading and maintenance costs, and poor function expansion and flexibility. At the application level, since there is a lack of multiple baseband device integration technology means, when the TT&C system type or the number of tasks exceeds the processing capacity of a single device, the integrated scheduling of multiple baseband devices cannot be realized, thereby causing high development cost and time efficiency. The new generation of integrated baseband adopts a virtualization technology which takes into account technical feasibility and engineering accessibility, and deploys processing resources in a unified software and hardware architecture as a flexible TT&C cloud node to provide TT&C services for the entire TT&C network as needed.

[0004] With the increase of spaceflight tasks and the development of TT&C modes, more and more spaceflight ground stations will be built in the future TT&C system, and these spaceflight ground stations will form a complex network with large scale and multiple types. For such a complex spaceflight ground station cluster, how to flexibly combine the TT&C devices in different structures or different places according to the needs, fully utilize the TT&C resources, and make the entire TT&C system develop towards a distributed architecture has become a problem that researchers have to consider. SUMMARY

[0005] The present application aims to overcome the technical defects of the prior art, and provides a method for implementing networking of spaceflight ground resources based on NFV and SDN technology, which can solve the problems of resource barriers existing in the traditional "chimney" structure, improve the comprehensive use efficiency of the TT&C system, reduce the operation cost, and improve the rapid adaptation ability to new demands.

[0006] The present application achieves the above-mentioned purpose by means of the following technical solutions:

[0007] The application provides a space ground resource networking cloud implementation method based on NFV and SDN technology, which is applied to space ground resource networking cloud and comprises a user end, a measurement operation control and service center, a management control and arrangement center, an SDN control center, a station-level SDN controller, station-level management control and arrangement, and an access station front end and a resource pool.

[0008] The user end issues a space measurement and control task to the measurement operation control and service center.

[0009] The SDN control center obtains resource information of the access station front end and the resource pool through the station-level SDN controller, and uniformly configures and manages the station-level SDN controller based on the demand of measurement operation control business.

[0010] The management control and arrangement center receives a space measurement and control task, selects the station-level management control and arrangement by using a cloud measurement and control situation map, and sends the space measurement and control task to the selected station-level management control and arrangement.

[0011] The station-level management control and arrangement selects the access station front end and the resource pool according to the resource information of the access station front end and the resource pool, and forwards the space measurement and control task to the selected access station front end and resource pool.

[0012] The access station front end and the resource pool execute the space measurement and control task according to the task demand of the space measurement and control task.

[0013] Optionally, the station-level management control and arrangement selects the access station front end and the resource pool according to the resource information of the access station front end and the resource pool, and forwards the space measurement and control task to the selected access station front end and resource pool, comprising:

[0014] The station-level management control and arrangement configures and combines the network formed by the access station front end and the resource pool.

[0015] The station-level SDN controller selects the access station front end and the resource pool according to the received resource information of the access station front end and the resource pool.

[0016] The station-level management control and arrangement controls the station-level SDN controller to send the space measurement and control task to the access station front end and the resource pool for processing.

[0017] Optionally, the access station front end and the resource pool comprise a resource pool and a plurality of access station front ends, each access station front end comprises a radio frequency front end device and a satellite navigation and timing device, and the radio frequency front end device adopts a high sampling rate radio frequency broadband digitization to separate radio frequency and baseband.

[0018] The satellite navigation and timing device is used for uniformly obtaining global time, and realizing absolute time labeling of a downlink data packet.

[0019] The access station front end and the resource pool execute the spaceflight TT&C task according to the task demand of the spaceflight TT&C task, including:

[0020] The radio frequency front end device IP processes the generated digitized information, and distributes the digitized information to the resource pool through an exchange network optical fiber.

[0021] The resource pool uses a network function virtualization technology to perform real-time signal processing on the digitized information.

[0022] The resource pool starts a corresponding TT&C baseband container according to the task demand of the spaceflight TT&C task to execute the spaceflight TT&C task.

[0023] Optionally, the radio frequency front end device includes an uplink processing unit and a downlink processing unit.

[0024] The downlink processing unit in the radio frequency front end device uses the ranging pseudo code reference output by the uplink processing unit to realize deterministic extraction of ranging parameters.

[0025] Optionally, the cloud TT&C situation map is obtained according to the occupation situation, dynamic data information and spatial position coordinates of the access station front end and the resource pool sent by the SDN control center.

[0026] Optionally, the network function virtualization technology includes an NFVI module and a VNFs module.

[0027] The NFVI module is used for virtualizing hardware resources through a virtual facility platform for use by an upper layer, and carrying various business applications and services of the measurement, operation, control and service center.

[0028] The VNFs module is used for softwareizing two major parts of signal processing and information processing TT&C functions.

[0029] The station-level management and control and arrangement are also used for realizing management of the NFVI module and the VNFs module, network business arrangement functions, support of virtualized physical or software resources, and life cycle management of VNFs.

[0030] The above main scheme of the present application and each further selection scheme thereof can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed by the present application; and the present application can be freely combined between (each non-conflict selection) selections and between other selections. Those skilled in the art can understand that there are multiple combinations according to existing technologies and common knowledge after understanding the schemes of the present application, all of which are technical schemes claimed by the present application, and are not enumerated here.

[0031] The application provides a space ground resource networking cloud implementation method based on NFV and SDN technology. By combining the control and arrangement center with station-level control and arrangement, the access station front end and resource pool can perform space TT&C tasks according to the task requirements of space TT&C tasks, and can also dynamically allocate resources such as baseband and signal processing according to the needs of measurement and operation control business. Secondly, combined with software-defined network, the processing capacity of heterogeneous or remote devices can be flexibly combined according to the needs, and then the problems of tight coupling of software and hardware, high degree of closure, low system flexibility, long business deployment time and high operation cost under the traditional "chimney" type space ground station structure can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A structure diagram of space ground resource networking cloud provided by an embodiment of the application is shown.

[0033] Figure 2 An internal structure diagram of space ground resource networking cloud provided by an embodiment of the application is shown. DETAILED DESCRIPTION

[0034] The embodiments of the application are described below through specific concrete examples. Those skilled in the art can easily understand other advantages and effects of the application from the disclosure of the specification. The application can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different views and applications without departing from the spirit of the application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0035] Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0036] The continuous development of multi-orbit constellation and 5G technology is changing human life. The demand for connection and access is increasing, and the ground satellite system is undergoing rapid transformation. How to win a dominant position in the future satellite Internet field is an important breakthrough in addition to accelerating the layout on the space side. The improvement of ground processing capacity is also an important breakthrough. More and more space ground stations form a large-scale, multi-type complex network. For such a complex space ground station cluster, how to make the heterogeneous or remote TT&C devices flexibly combined according to the needs, fully utilize the TT&C resources, and make the whole TT&C system develop towards a distributed architecture has become a problem that researchers have to consider.

[0037] Software Defined Network (SDN) is gradually accepted by device manufacturers and network architecture service providers as a network architecture. The main core idea of SDN is to manage network hardware through centralized software to realize programmability, and separate the control function of network hardware from the forwarding function. By combining Network Functions Virtualization (NFV) and software defined network technology, the geographical restrictions are broken, and various measurement and control, data transmission, communication and other business services can be provided. The analog signal transmitted by the satellite is converted into a digital IP package, which supports transmission on any distance and network, and can also virtualize digital processing algorithms into functionally independent network elements. In order to adapt to the flexible deployment of the system and provide support for rapid upgrade, resource aggregation and calling, and capacity optimization configuration are finally realized.

[0038] In order to realize the combination of network function virtualization and software defined network technology to solve the above problems, the embodiment of the application provides a space ground resource networking cloud implementation method based on NFV and SDN technology. By combining the management and control center and the station-level management and control, the access station front end and the resource pool can execute space measurement and control tasks according to the task requirements of space measurement and control tasks, and can also dynamically allocate resources such as baseband and signal processing according to the needs of measurement and control business. Next, it will be described in detail.

[0039] The embodiment of the application provides a space ground resource networking cloud implementation method based on NFV and SDN technology. The method is applied to space ground resource networking cloud, please refer to Figure 1 , Figure 1 The structure of the space ground resource networking cloud provided by the embodiment of the application is shown. The space ground resource networking cloud includes a user end, a measurement and control service center, a management and control center, an SDN control center, a station-level SDN controller, a station-level management and control, and an access station front end and a resource pool. The networking transmission of the access station front end and the resource pool is realized based on the distributed measurement and control system architecture of the optical fiber transmission.

[0040] The user end issues a space measurement and control task to the measurement and control service center;

[0041] The SDN control center obtains resource information of the access station front end and the resource pool through the station-level SDN controller, and configures and manages the station-level SDN controller according to the needs of the measurement and control business;

[0042] The management and control center receives the space measurement and control task, and selects the station-level management and control by using the cloud measurement and control situation map, and sends the space measurement and control task to the selected station-level management and control;

[0043] The station-level management and arrangement selects the access station front end and resource pool according to the resource information of the access station front end and the resource pool, and forwards the spaceflight TT&C task to the selected access station front end and resource pool.

[0044] The access station front end and resource pool execute the spaceflight TT&C task according to the task demand of the spaceflight TT&C task.

[0045] The spaceflight TT&C task is issued by a cloud user to the management and arrangement center through the measurement operation control and service center, the spaceflight TT&C task is used to realize real-time ranging, speed measurement, angle measurement, remote control, telemetry and data transmission processing of multiple TT&C signals, and the management and arrangement center and the station-level management and arrangement are combined to configure and combine the network formed by the access station front end and resource pool.

[0046] Further, Figure 2 An internal structure diagram of the spaceflight ground resource networking cloudization provided by the embodiment is shown. Figure 2 As shown in the figure, the user end, the measurement operation control and service center and the management and arrangement center are sequentially connected, the management and arrangement center is connected with the SDN controller center, the two are connected with multiple access station resource pools through a switching network, and the multiple access station resource pools are connected with multiple access station front ends through the switching network.

[0047] The station-level management and arrangement configures and combines the network formed by the access station front end and resource pool;

[0048] The station-level SDN controller selects the access station front end and resource pool according to the received resource information of the access station front end and resource pool;

[0049] The station-level management and arrangement controls the station-level SDN controller to send the spaceflight TT&C task to the access station front end and resource pool for processing.

[0050] The access station front end and resource pool includes a resource pool and multiple access station front ends, each access station front end includes a radio frequency front end device and a satellite navigation and timing device, and the radio frequency front end device separates the radio frequency and the baseband by using high sampling rate radio frequency broadband digitization;

[0051] The satellite navigation and timing device is used to uniformly obtain the global time and realize absolute time labeling of the downlink data packet.

[0052] The radio frequency front end device processes the generated digitized information by IP, and distributes the digitized information to the resource pool through the switching network optical fiber remote distribution, realizes full interconnection of the switching network based on the IP packet exchange mechanism, and can realize transmission link establishment of any communication node in the switching network;

[0053] The resource pool uses the network function virtualization technology to perform real-time signal processing on the digitized information;

[0054] The resource pool starts the corresponding TT&C baseband container according to the task demand of the space TT&C task to execute the space TT&C task.

[0055] The downlink processing unit in the radio frequency front-end device utilizes the ranging pseudo-code reference output by the uplink processing unit to realize the deterministic extraction of the ranging parameter.

[0056] The SDN control center obtains the resource information of the access station front end and the resource pool through the station-level SDN controller, and configures and manages the station-level SDN controller based on the demand of the measurement operation control business.

[0057] The management and arrangement center is an operation system for realizing the configuration, management, operation and maintenance of data control. The management entity can be distributed in the space ground station group, and the station-level management and arrangement is used to report the signal and information level data to the management and arrangement center.

[0058] The management and arrangement center is used for configuring, controlling and managing the station-level management and arrangement, and fusing and analyzing the signal and information level data reported by the station-level management and arrangement. The virtualization resources, virtualization network functions and network services reported by the station-level management and arrangement are integrated, and the cloud TT&C situation map is used to complete the unified management, so as to realize the business function of coordinating and arranging the regional management.

[0059] The cloud TT&C situation map is obtained according to the occupation situation, dynamic data information and spatial position coordinates of the access station front end and the resource pool sent by the SDN control center. It can reflect various information inside the space ground station group. In addition to the elements of the traditional situation map, it also contains time dimension, space dimension, health status, physical resource domain, electromagnetic domain and other information. First, the time dimension covers the history, current state and situation and future trend of the cloud TT&C virtualization resources; second, the space dimension covers all cloud TT&C regions in land, sea, air, sky, network and electricity, including the spatial coordinates of the equipment in each region; third, the health status dimension serves all the hard and software equipment of the access station and the resource pool, and can arbitrarily call the use and maintenance status of each device; fourth, the physical resource domain covers the optical fiber network from the front end to the resource pool, including the dynamic data information of all transmission networks; fifth, the electromagnetic domain covers the number, position, transmission frequency band, transmission power, antenna polarization, azimuth angle and other parameters of the electromagnetic radiation source in the cloud TT&C region. According to the radio wave propagation model, the influence of terrain, climate and other factors is considered, and the electromagnetic field intensity of each region is displayed.

[0060] In addition, the station-level management and orchestration configures and combines the network composed of the access station front end and resource pool, and controls the station-level SDN controller to send the spaceflight TT&C task to the access station front end and resource pool for processing. The station-level SDN controller selects the access station front end and resource pool according to the received resource information of the access station front end and resource pool, can effectively isolate the high-speed digitized information received by the virtual baseband, realizes the separation between the control plane and the data plane, and meets the requirements of different TT&C tasks in terms of time delay and bandwidth.

[0061] The radio frequency front end equipment selects a high sampling rate radio frequency broadband digitizer to separate the radio frequency from the baseband.

[0062] The access station front end distributes the generated digitized information to the resource pool through the switching network, and the resource pool uses the network function virtualization technology to perform real-time signal processing on the digitized information and completes the decoupling of the TT&C application and the physical platform.

[0063] The network transmission of the access station front end and the resource pool is realized through the distributed TT&C system architecture based on optical fiber transmission, and optical fiber medium is adopted, and software is definable, so that the access station front end and the resource pool realize the purposes of generalization, integration and reconfiguration.

[0064] The resource pool starts the corresponding TT&C baseband container according to the task requirements of the spaceflight TT&C task to execute the spaceflight TT&C task. The resource pool is realized based on the virtual baseband pool of the real-time cloud computing architecture, can realize the decoupling of the TT&C application and the physical platform through the network function virtualization technology on the basis of software and hardware, introduce the end-to-end layered management and orchestration system, and finally realize the purposes of resource sharing in the pool and flexible orchestration of upper-layer business functions.

[0065] The network function virtualization technology includes an NFVI module and a VNFs module, wherein the NFVI module includes computing, storage and network hardware resources and corresponding virtualization resources and a virtualization layer,

[0066] The hardware infrastructure of the module adopts a high-performance general-purpose processor plus an FPGA acceleration card, and the hardware resources can be virtualized by a virtual facility platform for use by the upper layer. The basic hardware resources include physical servers, acceleration card devices and other hardware, various physical resources are virtualized to form general virtual computing resources, storage resources, network resources and acceleration resources, which bear various business applications and services of the TT&C and service center.

[0067] The VNFs module runs on the basis of the NFVI module, and can realize the software of the two major parts of signal processing and information processing. The signal processing can complete the functions of TT&C signal capture and tracking, bit ring, code ring, frame synchronization and coding and decoding, and the information processing mainly completes TT&C information processing and distribution, including functions of telemetry processing, remote control processing, ranging and speed processing, remote control processing and the like.

[0068] The station-level management and orchestration includes a VNFM module and a VIM module, through which the management of the VNFs and NFVI modules and the network service orchestration function and the life cycle management of the physical / software resources supporting virtualization are realized. The software environment of the module includes a cloud platform management system, an operating system, a database management system, a virtualization management system, etc.

[0069] In addition, the resource pool virtualizes the hardware acceleration unit into computing resources, flexibly realizes signal filtering and sorting in the TT&C task, and adapts to various TT&C and communication systems such as standard TT&C, spread spectrum, and continuous phase modulation. Through the NFV technology, the resource pool uses the general X86 architecture and the general operating system and modern programming language to virtualize the acceleration card (FPGA / GPU), memory bank, and network card into computing, storage, and network resources, realizes the decoupling of the TT&C application and the physical platform, and introduces an end-to-end layered management and orchestration system to realize the sharing of resources in the pool and the flexible orchestration of the upper-layer service function.

[0070] The station-level management and orchestration can also use the station-level SDN controller to optimize the combination and flexibly configure the network composed of the access station front end and the resource pool, such as the grouping of the optical fiber remote switching and the reuse of the computing resources between each resource pool.

[0071] The SDN control center is used to obtain global information, uniformly configures and manages each station-level SDN controller based on the demand of the TT&C service, sends the occupation situation of the access station front end and the resource pool, the dynamic data information of the front end to the virtual baseband pool optical fiber remote network, and the spatial position coordinates and other information to the management and orchestration center, so that the management and orchestration center obtains the cloud TT&C situation map. After the management and orchestration center converges the information of the whole station, fuses and analyzes, and optimizes the service strategy, the SDN control center can be used to complete the orchestration and deployment of the mapping of the TT&C processing to the processing resources.

[0072] In addition, the SDN control center can also send the use and maintenance situation of the hardware and software devices of all the access stations and resource pools to the management and orchestration center, and consider the information such as the influence of the terrain and climate on the TT&C task to configure and manage and analyze to obtain the cloud TT&C situation map. According to the cloud TT&C situation map, a suitable TT&C link composed of the access station and the resource pool in the region is selected to jointly perform the space TT&C task.

[0073] The cloud TT&C situation map includes the correlation between the cloud TT&C regions, the key nodes, the theme situation, the overall situation, and the information source tracing, which helps the management and orchestration center to configure, control, and manage the station-level management and orchestration, and perfects the deployment of the layered network service of the space ground station.

[0074] After the cloud TT&C situation map is obtained by analyzing various information of the space TT&C station group at the control and arrangement center, the cloud TT&C situation map is made, and the control and arrangement center makes a decision to select a suitable station-level control and arrangement by using the cloud TT&C situation map.

[0075] The resource pool further comprises a computing node, the computing node virtualizes resource information, starts a baseband container according to a demand of a space TT&C task to process the space TT&C task, and sends a processing result to the control and arrangement center after processing is completed. The resource information comprises signal processing information and resource occupation, and the access station front end and the resource pool are used to send the signal processing information and the resource occupation of the resource pool to the station-level SDN controller.

[0076] The station-level SDN controller adopts an OpenFlow protocol, and controls a flow table by using an IP address and a port to import or output network data from a physical port of a switch, completes configuration, control and management of a front-end group optical fiber remote switching, effectively isolates high-speed digitized information received by a virtual baseband, and realizes separation between a control plane and a data plane to meet a demand of a time delay and a bandwidth of different TT&C tasks.

[0077] In addition, TT&C stations in different geographical positions respectively realize reception and transmission of radio frequency signals by using respective antennas and radio frequency front end devices. The radio frequency signals enter the radio frequency front end device through a radio frequency channel, are first subjected to digital-analog conversion by an ADC device, are subjected to digital down conversion and down sampling after a digital down conversion and down sampling device, and are packetized after the device information data packet of the ADC device and the intermediate frequency data packet of the digital down conversion are packetized. The radio frequency front end device generates digitized information after the packetization process, becomes high-speed sampling data after IP processing and optical fiber remote, and enters a switching network. The switching network distributes the high-speed sampling data to the resource pool.

[0078] After the resource pool receives the digitized information, internal cloud platform software realizes virtualization of hardware resources, each computing node can also start a corresponding TT&C baseband container according to a task demand, receives high-speed sampling data and processes the high-speed sampling data in real time, and sends a processing result to the control and arrangement center through the station-level SDN controller and the SDN control center, thereby serving the measurement operation control service and center and cloud users.

[0079] The process that the computing node processes the digitized information is as follows: the cloud platform management system utilizes the computing node to start the corresponding measurement and control baseband container according to the task demand of the spaceflight measurement and control task, performs real-time signal processing on the high-speed sampling data received from the switching network, issues a task requirement to the FPGA acceleration card management center in the NFVI module, the FPGA acceleration card management center completes resource allocation of the FPGA acceleration card and loads the related capture or coding algorithm program, so as to realize functions such as real-time ranging, speed measurement, angle measurement, remote control, telemetry and data transmission processing of multiple measurement and control signals in the VNFs module, and send the processing results to the measurement and control service center and the cloud user through the station-level SDN controller and the SDN control center.

[0080] Compared with the prior art, the embodiments of the application have the following beneficial effects:

[0081] (1) By combining the management and control with the arrangement center and the station-level management and control with the arrangement, the access station front end and the resource pool can execute the spaceflight measurement and control task according to the task demand of the spaceflight measurement and control task sent by the measurement and control service center, and can also dynamically allocate resources such as baseband and signal processing according to the needs of the measurement and control service.

[0082] (2) The application utilizes the network function virtualization technology and the software-defined network technology to realize unified connection and deployment between the various access station front ends and the resource pool, and completes complex ground station network deployment.

[0083] (3) After the task is completed, the resources are returned to the resource pool, which can also improve the comprehensive use efficiency of the measurement and control system and reduce the operation cost.

[0084] (4) The data plane and the control plane service are separated through the SDN control center and the station-level SDN controller, unified resource management, automatic process, resource scheduling and adjustment strategy are achieved, and the resource utilization rate is greatly improved.

[0085] (5) For different business types and corresponding business processing resource requirements, full-range business type support such as telemetry, measurement and control, and data transmission is realized, and the resources in each resource pool can also be more flexibly managed and scheduled.

[0086] The above only describes the preferred embodiments of the application and is not intended to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A method for implementing space ground resource networking based on network function virtualization (NFV) and software defined network (SDN) technology, characterized in that, The application is applied to space-ground resource networking cloudification, and the space-ground resource networking cloudification includes a user terminal, a measurement operation control and service center, a management and control and arrangement center, an SDN control center, a station-level SDN controller, station-level management and control and arrangement, and an access station front end and a resource pool. Network transmission of the access station front end and the resource pool is achieved based on a distributed measurement and control system architecture of optical fiber transmission, and includes the following steps: The user terminal issues a space measurement and control task to the measurement operation control and service center. The SDN control center obtains resource information of the access station front end and the resource pool through the station-level SDN controller, and performs unified configuration and management on the station-level SDN controller based on the demand of measurement operation control business. The management and control and arrangement center receives a space measurement and control task, and selects the station-level management and control and arrangement by using a cloud measurement and control situation map, and sends the space measurement and control task to the selected station-level management and control and arrangement. The station-level management and control and arrangement selects the access station front end and the resource pool according to the resource information of the access station front end and the resource pool, and forwards the space measurement and control task to the selected access station front end and the resource pool. The access station front end and the resource pool execute the space measurement and control task according to the task demand of the space measurement and control task. The access station front end and the resource pool include a resource pool and a plurality of access station front ends. Each access station front end includes a radio frequency front end device and a satellite navigation and timing device. The radio frequency front end device separates radio frequency and baseband by using high sampling rate radio frequency broadband digitization. The satellite navigation and timing device is used to uniformly obtain global time, and realize absolute time labeling of a downlink data packet. The access station front end and the resource pool execute the space measurement and control task according to the task demand of the space measurement and control task, including the following steps: The radio frequency front end device performs IP processing on the generated digitized information, and distributes the information to the resource pool through an exchange network optical fiber. The resource pool uses network function virtualization technology to perform real-time signal processing on the digitized information. The resource pool starts a corresponding measurement and control baseband container to execute the space measurement and control task according to the task demand of the space measurement and control task. 2.The method of claim 1, wherein, The station-level management and control and arrangement selects the access station front end and the resource pool according to the resource information of the access station front end and the resource pool, and forwards the space measurement and control task to the selected access station front end and the resource pool, including the following steps: The station-level management and control and arrangement configures and combines the network formed by the access station front end and the resource pool. The station-level SDN controller selects the access station front end and the resource pool according to the received resource information of the access station front end and the resource pool. The station-level management and control and arrangement controls the station-level SDN controller to send the space measurement and control task to the access station front end and the resource pool for processing. 3.The method of claim 1, wherein, The radio frequency front end device includes an uplink processing unit and a downlink processing unit. The downlink processing unit in the radio frequency front end device realizes deterministic extraction of ranging parameters by using the ranging pseudo code reference output by the uplink processing unit. 4.The method of claim 1, wherein, The cloud measurement and control situation map is obtained according to the occupation situation, dynamic data information and spatial position coordinates of the access station front end and the resource pool sent by the SDN control center.

5. The method of claim 1, wherein the method is implemented by using NFV and SDN technologies. The network function virtualization technology comprises an NFVI module and a VNFs module; The NFVI module is used for virtualizing hardware resources through a virtual facility platform for use by an upper layer, and carries various business applications and services of a measurement control and service center; The VNFs module is used for software implementation of signal processing and information processing two major parts of measurement control functions; The station-level management and control and arrangement are also used for realizing management of the NFVI module and the VNFs module, network business arrangement functions, support of virtualized physical or software resources, and life cycle management of VNFs.

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