CN115580334B - Network resource scheduling and management method for earth observation space cloud - Google Patents
Network resource scheduling and management method for earth observation space cloud Download PDFInfo
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Abstract
The invention relates to a network resource scheduling and management method for earth observation space cloud, belonging to the technical field of space cloud computing network networking control. According to the remote sensing satellite system, through the space cloud network link resource scheduling and management design of remote sensing observation instruction uplink resource real-time allocation, remote sensing observation data return link resource based on task pre-allocation, remote sensing product data downlink resource reservation according to need and the like, flexible and reliable transmission of various management and control service data in the space cloud computing network is realized, the problems that the remote sensing satellite system is poor in timeliness of remote sensing observation data and the ground station network receives resources in shortage due to the fact that the existing remote sensing satellite system simply depends on a resource scheduling and management mechanism based on a task plan are solved, and the operation efficiency of the remote sensing satellite is effectively improved.
Description
Technical Field
The invention relates to the technical field of space cloud computing network networking control, in particular to a space cloud network resource scheduling and management technology which can be used for realizing full-time uploading of observation task instructions, instant feedback of remote sensing observation data and reliable downloading of remote sensing product data.
Background
The traditional remote sensing satellite system mainly completes the uploading of observation task instructions and the downloading of remote sensing observation data when a remote sensing satellite passes through a ground station network, and generates remote sensing products in a ground remote sensing processing center. Because the coverage area of the ground station is limited, when the remote sensing satellite is out of the coverage area of the ground station, the observation task instruction cannot be received. Similarly, after the remote sensing satellite completes the observation task and generates the remote sensing data, the remote sensing satellite needs to be operated in the coverage of the ground station to download the remote sensing observation data to the ground station, so that the timeliness of the remote sensing data and the operation efficiency of the remote sensing satellite are seriously affected. In addition, most of remote sensing satellites are in sun synchronous orbit, transit time is concentrated, ground station network resources are tense, and communication requirements of command uploading and data returning of future mass civil remote sensing satellites cannot be met.
Disclosure of Invention
Aiming at the problems, the invention provides a network resource scheduling and management method for earth-oriented observation space cloud, which can be used in a space-based remote sensing data cloud computing scene to realize the full-time uploading of observation task instructions, the instant back transmission of remote sensing observation data and the reliable downloading of remote sensing product data.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A network resource scheduling and management method for earth observation space cloud, wherein the earth observation space cloud comprises remote sensing satellite nodes, space-based cloud computing nodes and ground comprehensive service stations; the space-based cloud computing node and the remote sensing satellite node transmit observation task instruction information through a microwave link and transmit remote sensing observation data information through a laser link; the method comprises the following steps:
A. The earth observation space cloud adopts a satellite label switching mode, a ground comprehensive service station intensively maintains the mapping relation between remote sensing satellite nodes, space-based cloud computing nodes and the IP addresses of the ground comprehensive service station and satellite labels, and broadcast information is periodically broadcast to a covered airspace through the space-based cloud computing nodes;
B. The method comprises the steps that an in-orbit remote sensing satellite node calculates the visible relation between the remote sensing satellite node and the space-based cloud computing node in real time by using the space-based cloud computing node and ephemeris information of the remote sensing satellite node, and a microwave antenna is pointed to the space-based cloud computing node with the longest visible time to receive broadcast information of a ground comprehensive service station;
C. After the ground comprehensive service station generates an observation task instruction of the remote sensing satellite node, a space-based cloud computing node group visible to the current remote sensing satellite node is calculated according to the space-based cloud computing node and ephemeris information of the remote sensing satellite node, and paging request information is sent to the remote sensing satellite node through the space-based cloud computing node group; after receiving the paging request information, the remote sensing satellite node sends resource application information to the ground comprehensive service station through the current space-based cloud computing node; the ground comprehensive service station distributes microwave link resources of the space-based cloud computing node, transmits resource response information to the remote sensing satellite node, establishes data connection with the remote sensing satellite node, and transmits an observation task instruction to the remote sensing satellite node through the data connection; after the observation task instruction transmission is finished, the ground comprehensive service station removes the data connection and releases the microwave link resources of the space-based cloud computing node;
D. After receiving the observation task instruction, the remote sensing satellite node flies towards the designated airspace to complete the earth observation task and generate remote sensing observation data; the remote sensing satellite node acquires information of a space-based cloud computing node and time for establishing a remote sensing observation data return link according to an observation task instruction, establishes an inter-satellite laser link with the space-based cloud computing node, and sends remote sensing observation data information to the space-based cloud computing node;
E. The space-based cloud computing node processes the remote sensing observation data information to generate remote sensing product data, and sends a data connection request to a ground comprehensive service station; the ground comprehensive service station calculates the transmission bandwidth and connection time required by the data connection, reserves the data connection transmission resource, and sends a data connection response to the space-based cloud computing node; the space-based cloud computing node sends remote sensing product data to a ground comprehensive service station through the data connection; and after the data transmission of the remote sensing products is finished, the ground comprehensive service station removes the data connection and releases transmission resources.
Further, in step a, the space-based cloud computing node periodically broadcasts broadcast information including the IP address of the ground integrated service station and the satellite number.
In step B, the remote sensing satellite node only receives the broadcast information of the space-based cloud computing node in one direction in an idle state, and stores the IP address of the ground comprehensive service station and the information of the satellite signal.
In step C, the ground comprehensive service station sends the observation task instruction to the corresponding space-based cloud computing node, so as to establish a laser link with the remote sensing satellite node.
In the step E, the space-based cloud computing node encapsulates the remote sensing product data into satellite tags of the ground comprehensive service station and sends the satellite tags to the ground comprehensive service station; in the remote sensing product data transmission process, if the ground comprehensive service station is subjected to cross-star switching, the space-based cloud computing node updates the satellite tag of the ground comprehensive service station, and the continuity of remote sensing product information downloading is maintained.
Compared with the background technology, the invention has the following beneficial effects:
1. The invention can realize the full-time uploading of the observation task instruction, the instant back transmission of the remote sensing observation data and the reliable downloading of the remote sensing product data, solves the problems of timeliness of the remote sensing data and shortage of ground station network resources, and improves the operation efficiency of the remote sensing satellite.
2. The method can be applied to space-based remote sensing data cloud computing scenes, and provides guarantee for flexible and reliable transmission of various data and efficient operation of a space cloud computing network.
In a word, the invention realizes flexible and reliable transmission of various management and control and service data in a space cloud computing network through the space cloud network link resource scheduling and management design of remote sensing observation command uplink resource real-time allocation, remote sensing observation data return link resource based on task pre-allocation, remote sensing product data downlink resource reservation according to need and the like, solves the problems of poor timeliness of remote sensing observation data and insufficient receiving resources of a ground station network caused by the fact that the existing remote sensing satellite system simply depends on a resource scheduling and management mechanism based on a task plan, and effectively improves the operation efficiency of a remote sensing satellite.
Drawings
FIG. 1 is a schematic view of an application scenario of a method according to an embodiment of the present invention;
FIG. 2 is a flow chart of observation task instruction uploading in an embodiment of the invention;
FIG. 3 is a flow chart of remote sensing observation data feedback in an embodiment of the invention;
fig. 4 is a flowchart of remote sensing product information downloading in an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
The space cloud computing network moves remote sensing data processing from the ground to the satellite by deploying space cloud computing load on the satellite network, realizes full-time uploading of remote sensing satellite observation tasks and instant feedback of observation data by utilizing the characteristic of global coverage of the satellite network, effectively compresses the data quantity of remote sensing observation by space remote sensing data processing, and reduces the remote sensing data receiving pressure of a ground station. The resource scheduling and management is one of the key technologies of the space cloud computing network, and is a foundation for guaranteeing flexible and reliable transmission of remote sensing observation task instructions and remote sensing observation data and efficient operation of the space cloud computing network.
Fig. 1 shows an application scenario of a network resource scheduling and management method for earth observation space cloud, which includes remote sensing satellite nodes, space-based cloud computing nodes, ground comprehensive service stations and interconnection links. And the space-based cloud computing node and the remote sensing satellite node transmit observation task instructions through a microwave link and transmit remote sensing observation data through a laser link.
As shown in fig. 2, 3 and 4, the method comprises the following steps:
A. The space cloud network adopts a satellite label switching mode, a ground comprehensive service station intensively maintains the mapping relation between the IP addresses of remote sensing satellite nodes, space-based cloud computing nodes, ground comprehensive service stations and other nodes and satellite labels, and broadcast information to a covered airspace periodically through the space-based cloud computing nodes.
And A, periodically broadcasting information of the space-based cloud computing node in the step, wherein the broadcasting information comprises information such as an IP address of a ground comprehensive service station, a satellite number and the like.
B. After the remote sensing satellite runs in orbit, the visible relation between the remote sensing satellite and the space-based cloud computing node is computed in real time by using the space-based cloud computing node and the ephemeris information of the remote sensing satellite, a microwave antenna is pointed to the space-based cloud computing node with the longest visible time, and broadcast information of a ground comprehensive service station is received.
And B, in the idle state, the remote sensing satellite node only receives the broadcast information of the space-based cloud computing node in one direction, and stores the information such as the IP address of the ground comprehensive service station and the satellite number.
C. after the ground comprehensive service station generates an observation task instruction of the remote sensing satellite, a space-based cloud computing node group visible to the current remote sensing satellite is calculated according to the space-based cloud computing node and ephemeris information of the remote sensing satellite, and paging request information is sent to the remote sensing satellite through the space-based cloud computing node group. After receiving the paging request information, the remote sensing satellite sends resource application information to the ground comprehensive service station through the current space-based cloud computing node. The ground comprehensive service station distributes microwave link resources of the space-based cloud computing node, transmits resource response information to the remote sensing satellite node, establishes data connection with the remote sensing satellite node, and transmits an observation task instruction to the remote sensing satellite node through the data connection. And after the observation task instruction transmission is finished, the ground comprehensive service station removes the data connection and releases the microwave link resources of the space-based cloud computing node.
And C, the ground comprehensive service station sends an observation task instruction to the corresponding space-based cloud computing node for establishing a laser link with the remote sensing satellite node.
D. After receiving the observation task instruction, the remote sensing satellite node flies towards the designated airspace to complete the earth observation task and generate remote sensing observation data. And the remote sensing satellite node acquires information such as a space-based cloud computing node, time and the like for establishing a remote sensing observation data return link according to the observation task instruction, establishes an inter-satellite laser link with the space-based cloud computing node, and sends remote sensing observation data information to the space-based cloud computing node.
E. And the space-based cloud computing node processes the remote sensing observation data information, generates remote sensing product data and sends a data connection request to the ground comprehensive service station. The ground comprehensive service station calculates parameters such as transmission bandwidth, connection time and the like required by the data connection, reserves the data connection transmission resources, and sends a data connection response to the space-based cloud computing node. And the space-based cloud computing node sends remote sensing product data to the ground comprehensive service station through the data connection. And after the data transmission of the remote sensing products is finished, the ground comprehensive service station removes the data connection and releases transmission resources.
And E, the space-based cloud computing node encapsulates the remote sensing product data into satellite tags of the ground comprehensive service station and sends the satellite tags to the ground comprehensive service station. In the remote sensing product data transmission process, if the ground comprehensive service station is subjected to cross-star switching, the space-based cloud computing node updates the satellite tag of the ground comprehensive service station, and the continuity of remote sensing product information downloading is maintained.
The method adopts the space cloud network link resource scheduling and management design of remote sensing observation instruction uplink resource real-time allocation, remote sensing observation data return link resource based on task pre-allocation, remote sensing product data downlink resource reservation according to need and the like, realizes flexible and reliable transmission of various management and control and service data in a space cloud computing network, solves the problems of poor timeliness of remote sensing observation data and insufficient receiving resources of a ground station network caused by the fact that the existing remote sensing satellite system simply depends on a resource scheduling and management mechanism based on a task plan, and improves the operation efficiency of remote sensing satellites
In a word, the space cloud network resource scheduling and management method is originally created, and can be used in a scene of space-based remote sensing data cloud computing to realize full-time uploading of observation task instructions, instant return of remote sensing observation data and reliable downloading of remote sensing product data.
Finally, it should be noted that: while the invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that the foregoing embodiments may be modified or other features may be substituted for those illustrated and described, and any modifications, equivalents, improvements and changes will fall within the spirit and principles of the invention.
Claims (4)
1. A network resource scheduling and management method for earth observation space cloud, wherein the earth observation space cloud comprises remote sensing satellite nodes, space-based cloud computing nodes and ground comprehensive service stations; the method is characterized in that observation task instruction information is transmitted between the space-based cloud computing node and the remote sensing satellite node through a microwave link, and remote sensing observation data information is transmitted through a laser link; the method comprises the following steps:
A. The earth observation space cloud adopts a satellite label switching mode, a ground comprehensive service station intensively maintains the mapping relation between remote sensing satellite nodes, space-based cloud computing nodes and the IP addresses of the ground comprehensive service station and satellite labels, and broadcast information is periodically broadcast to a covered airspace through the space-based cloud computing nodes;
B. The method comprises the steps that an in-orbit remote sensing satellite node calculates the visible relation between the remote sensing satellite node and the space-based cloud computing node in real time by using the space-based cloud computing node and ephemeris information of the remote sensing satellite node, and a microwave antenna is pointed to the space-based cloud computing node with the longest visible time to receive broadcast information of a ground comprehensive service station;
C. After the ground comprehensive service station generates an observation task instruction of the remote sensing satellite node, a space-based cloud computing node group visible to the current remote sensing satellite node is calculated according to the space-based cloud computing node and ephemeris information of the remote sensing satellite node, and paging request information is sent to the remote sensing satellite node through the space-based cloud computing node group; after receiving the paging request information, the remote sensing satellite node sends resource application information to the ground comprehensive service station through the current space-based cloud computing node; the ground comprehensive service station distributes microwave link resources of the space-based cloud computing node, transmits resource response information to the remote sensing satellite node through the space-based cloud computing node, establishes data connection with the remote sensing satellite node, and transmits an observation task instruction to the remote sensing satellite node through the data connection; after the observation task instruction transmission is finished, the ground comprehensive service station removes the data connection and releases the microwave link resources of the space-based cloud computing node;
D. After receiving the observation task instruction, the remote sensing satellite node flies towards the designated airspace to complete the earth observation task and generate remote sensing observation data; the remote sensing satellite node acquires information of a space-based cloud computing node and time for establishing a remote sensing observation data return link according to an observation task instruction, establishes an inter-satellite laser link with the space-based cloud computing node, and sends remote sensing observation data information to the space-based cloud computing node;
E. The space-based cloud computing node processes the remote sensing observation data information to generate remote sensing product data, and sends a data connection request to a ground comprehensive service station; the ground comprehensive service station calculates the transmission bandwidth and connection time required by the data connection, reserves the data connection transmission resource, and sends a data connection response to the space-based cloud computing node; the space-based cloud computing node sends remote sensing product data to a ground comprehensive service station through the data connection; and after the data transmission of the remote sensing products is finished, the ground comprehensive service station removes the data connection and releases transmission resources.
2. The method for scheduling and managing network resources facing to earth observation space cloud according to claim 1, wherein in the step a, the space-based cloud computing node periodically broadcasts broadcast information including an IP address of an earth integrated service station and a satellite signal.
3. The network resource scheduling and managing method for earth-oriented observation space clouds according to claim 1, wherein in the step B, the remote sensing satellite nodes only receive the broadcast information of the space-based cloud computing nodes in one direction in an idle state, and store the information of the IP address and the satellite signal of the ground comprehensive service station.
4. The network resource scheduling and managing method for earth-oriented observation space cloud according to claim 1, wherein in step E, the space-based cloud computing node encapsulates the remote sensing product data into satellite tags of the ground comprehensive service station and sends the satellite tags to the ground comprehensive service station; in the remote sensing product data transmission process, if the ground comprehensive service station is subjected to cross-star switching, the space-based cloud computing node updates the satellite tag of the ground comprehensive service station, and the remote sensing product data downloading continuity is maintained.
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| CN114584199A (en) * | 2022-03-01 | 2022-06-03 | 中国电子科技集团公司第五十四研究所 | Earth observation operation system architecture based on space cloud service |
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| CN114696887B (en) * | 2022-03-11 | 2024-04-26 | 中国电子科技集团公司第五十四研究所 | Remote sensing data on-orbit processing system and method based on earth observation space cloud service |
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| CN114584199A (en) * | 2022-03-01 | 2022-06-03 | 中国电子科技集团公司第五十四研究所 | Earth observation operation system architecture based on space cloud service |
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