CN117220752A - Satellite-ground data transmission link safety transmission system and method - Google Patents
Satellite-ground data transmission link safety transmission system and method Download PDFInfo
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- CN117220752A CN117220752A CN202311086636.8A CN202311086636A CN117220752A CN 117220752 A CN117220752 A CN 117220752A CN 202311086636 A CN202311086636 A CN 202311086636A CN 117220752 A CN117220752 A CN 117220752A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 72
- 238000012545 processing Methods 0.000 claims abstract description 44
- 230000004044 response Effects 0.000 claims abstract description 35
- 238000012790 confirmation Methods 0.000 claims description 12
- 238000012795 verification Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 4
- 206010000117 Abnormal behaviour Diseases 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a satellite-ground data transmission link safe transmission system and a method, wherein the system comprises a plurality of task satellite nodes, a relay satellite node, a ground station and a data center; the task satellite node and the relay satellite node construct a satellite cluster; the relay satellite nodes are used for respectively establishing inter-satellite laser communication links with a plurality of task satellite nodes to finish relay communication operation; the relay satellite node is also used for remotely controlling the task satellite nodes in the satellite cluster to execute safety response protection processing operation; the ground station is used for communicating with the task satellite node through the relay satellite node to finish data transmission operation; the data center is used for managing data in the satellite cluster. The satellite-ground data transmission link safety transmission system and the satellite-ground data transmission link safety transmission method ensure the safety of data transmission of all satellite terminals in the space.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a satellite-ground data transmission link safe transmission system and method.
Background
With the rapid development of satellite communication technology and the surge of global informatization, satellite communication security is becoming a focus of international social attention.
However, the security threat problem faced by the satellite communication network is increasingly prominent, and at present, the conventional satellite trunking network has no security control mode for a plurality of satellites, and generally, coordination processing is performed through a control center at the ground end.
However, the research discovers that the simple inter-networking secure communication system has complex communication link and high communication delay, and the data transmission security of each inter-satellite terminal can not be ensured by the transfer control of the ground terminal.
Disclosure of Invention
The invention aims to provide a satellite-ground data transmission link safety transmission system and a satellite-ground data transmission link safety transmission method, which solve the technical problems pointed out in the prior art.
The invention provides a satellite-ground data transmission link safe transmission system, which comprises a plurality of task satellite nodes, a relay satellite node, a ground station and a data center, wherein the task satellite nodes are connected with the ground station;
the task satellite node is a task satellite comprising a satellite body; the relay satellite node is a relay communication satellite comprising a satellite body; the task satellite node and the relay satellite node construct a satellite cluster;
the relay satellite nodes are used for respectively establishing inter-satellite laser communication links with a plurality of task satellite nodes to finish relay communication operation; the relay satellite node is also used for remotely controlling the task satellite nodes in the satellite cluster to execute safety response protection processing operation;
the ground station is used for communicating with the task satellite node through the relay satellite node to finish data transmission operation;
the data center is used for managing data in the satellite cluster.
Preferably, the satellite-ground data transmission link safety transmission system further comprises a communication link establishment module; the communication link establishment module is arranged at the relay satellite node and is used for sending laser beam signals and link encryption keys to the task satellite node; after receiving the laser beam signal, the task satellite node carries out demodulation processing and analyzes to obtain a target link encryption key; the communication link establishment module is further configured to verify the target link encryption key (if the target link encryption key is consistent with the original link encryption key, verification is successful), and after verification is successful, send a response signal to the relay satellite node through the own laser communication device, so as to complete establishment of the laser communication link.
Preferably, the satellite-ground data transmission link safety transmission system further comprises a response processing module; the response processing module is arranged at the relay satellite node and is used for acquiring state operation information and basic safety parameter data of the task satellite node through a laser communication link established with the task satellite node; judging whether safety threat exists or not according to the acquired state operation information and basic safety parameter data, and carrying out corresponding safety response protection processing operation.
Preferably, the satellite-ground data transmission link safety transmission system further comprises a secondary confirmation processing module; the secondary confirmation processing module is used for calling the security log record of the task satellite node after primarily recognizing that the task satellite node has security threat; and further confirming and judging whether the current task satellite node has security threat or not through the security log record.
The invention provides a satellite-to-ground data transmission link safe transmission method, which is used for processing by using the satellite-to-ground data transmission link safe transmission system and is characterized by comprising the following operation steps:
the relay satellite nodes respectively establish inter-satellite laser communication links with a plurality of task satellite nodes to finish relay communication operation;
the relay satellite node remotely controls task satellite nodes in the satellite cluster to execute safety response protection processing operation;
the ground station communicates with the task satellite node through the relay satellite node to complete data transmission operation;
the data center manages data in a cluster of satellites.
Preferably, the relay satellite node respectively establishes inter-satellite laser communication links with a plurality of task satellite nodes to complete relay communication operation, and specifically comprises the following operation steps:
the relay satellite node sends a laser beam signal and a link encryption key to the task satellite node through self laser communication equipment;
after receiving the laser beam signal, the task satellite node uses the self laser communication equipment to carry out demodulation processing and analyzes to obtain a target link encryption key;
and the task satellite node verifies the target link encryption key, and after verification is successful, a response signal is sent to the relay satellite node through the self laser communication equipment to complete the establishment of the laser communication link.
Preferably, the relay satellite node remotely controls a task satellite node in the satellite cluster to execute a safety response protection processing operation, and specifically includes the following operation steps:
the relay satellite node acquires state operation information and basic safety parameter data of the task satellite node through a laser communication link established with the task satellite node;
and the relay satellite node judges whether safety threat exists according to the acquired state operation information and the basic safety parameter data and carries out corresponding safety response protection processing operation.
Preferably, the state operation information comprises network flow, hardware operation state information and task execution information of the current task satellite node; the basic security parameter data comprise encryption algorithm rules, preset access control list rules and security upgrading rules.
Preferably, the method further comprises the following operation steps; the secondary confirmation processing module invokes the security log record of the task satellite node after primarily recognizing that the task satellite node has security threat; further confirming and judging whether the current task satellite node has security threat or not through the security log record;
preferably, the step of further confirming and judging whether the current task satellite node has a security threat through the security log record specifically includes: the task satellite node records various security log records in the running process; the ground station or the data center is responsible for analyzing and auditing the security log records to find out whether the security threat exists or not through secondary confirmation.
Compared with the prior art, the embodiment of the invention has at least the following technical advantages:
the satellite-ground data transmission link safe transmission system and the communication method provided by the invention are incorporated into a satellite cluster by utilizing an inter-satellite laser communication link, so that the construction of a relay satellite node is completed, and meanwhile, the remote control operation on the satellite cluster is realized by utilizing the relay satellite node.
The satellite-ground data transmission link safety transmission system provided by the embodiment of the invention has interoperability. The relay satellite node remotely controls the task satellite node in the satellite cluster to execute safe response protection processing operation, high-speed communication transmission is realized by using the relay satellite node, and a safe and reliable response protection mechanism is realized, so that a satellite cluster network which is called a 'star shield network' or safe and reliable is finally constructed.
In summary, the invention provides a satellite-to-ground data transmission link secure transmission system, which has high security, and can effectively protect communication data in a satellite cluster and prevent data leakage and attack.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a system architecture of a satellite-to-ground data transmission link secure transmission system according to a first embodiment of the present invention;
fig. 2 is a schematic flow chart of operation steps of a satellite-to-ground data transmission link security transmission method according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of a relay communication operation step in a satellite-to-ground data transmission link secure transmission method according to a second embodiment of the present invention;
fig. 4 is a flow chart illustrating operation steps of response protection processing in a satellite-to-ground data transmission link security transmission method according to a second embodiment of the present invention;
fig. 5 is a flowchart illustrating further confirmation operation steps in a satellite-to-ground data transmission link security transmission method according to a second embodiment of the present invention.
Reference numerals: mission satellite node 10, relay satellite node 20, ground station 30, and data center 40.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.
Example 1
Referring to fig. 1, the present invention proposes a satellite-to-earth data transmission link secure transmission system, which includes a plurality of mission satellite nodes 10, a relay satellite node 20, a ground station 30, and a data center 40;
wherein the mission satellite node 10 is a mission satellite including a satellite body; the relay satellite node is a relay communication satellite comprising a satellite body; the task satellite node and the relay satellite node construct a satellite cluster;
the relay satellite node 20 is configured to establish inter-satellite laser communication links with a plurality of the task satellite nodes, respectively, so as to complete relay communication operation;
the relay satellite node 20 is further configured to remotely control a task satellite node in the satellite cluster to perform a safety response protection processing operation;
the ground station 30 is configured to communicate with a task satellite node through a relay satellite node to complete a data transmission operation;
the data center 40 is configured to manage data in the satellite clusters.
Preferably, the satellite-ground data transmission link safety transmission system further comprises a communication link establishment module; the communication link establishment module is arranged at the relay satellite node and is used for sending laser beam signals and link encryption keys to the task satellite node; after receiving the laser beam signal, the task satellite node carries out demodulation processing and analyzes to obtain a target link encryption key; the communication link establishment module is further configured to verify the target link encryption key (if the target link encryption key is consistent with the original link encryption key, verification is successful), and after verification is successful, send a response signal to the relay satellite node through the own laser communication device, so as to complete establishment of the laser communication link.
Preferably, the satellite-ground data transmission link safety transmission system further comprises a response processing module; the response processing module is arranged at the relay satellite node and is used for acquiring state operation information and basic safety parameter data of the task satellite node through a laser communication link established with the task satellite node; judging whether safety threat exists or not according to the acquired state operation information and basic safety parameter data, and carrying out corresponding safety response protection processing operation.
It should be explained that the safety response guard processing operations include, but are not limited to: the method comprises the steps of controlling the running state of the task satellite node, updating software and firmware of the task satellite node, encrypting communication data, monitoring network traffic of the task satellite node and the like.
Preferably, the satellite-ground data transmission link safety transmission system further comprises a secondary confirmation processing module; the secondary confirmation processing module is used for calling the security log record of the task satellite node after primarily recognizing that the task satellite node has security threat; and further confirming and judging whether the current task satellite node has security threat or not through the security log record.
Example two
Correspondingly, as shown in fig. 2, the invention provides a satellite-to-ground data transmission link safe transmission method, which uses the satellite-to-ground data transmission link safe transmission system for processing, and comprises the following operation steps:
s1: the relay satellite nodes respectively establish inter-satellite laser communication links with a plurality of task satellite nodes to finish relay communication operation;
s2: the relay satellite node remotely controls task satellite nodes in the satellite cluster to execute safety response protection processing operation;
s3: the ground station communicates with the task satellite node through the relay satellite node to complete data transmission operation;
s4: the data center manages data in a cluster of satellites.
As shown in fig. 3, the relay satellite node respectively establishes inter-satellite laser communication links with a plurality of task satellite nodes to complete relay communication operation, and specifically includes the following operation steps:
s11: the relay satellite node sends a laser beam signal and a link encryption key to the task satellite node through self laser communication equipment;
s12: after receiving the laser beam signal, the task satellite node uses the self laser communication equipment to carry out demodulation processing and analyzes to obtain a target link encryption key;
s13: and the task satellite node verifies the target link encryption key (if the target link encryption key is consistent with the original link encryption key, the verification is successful), and after the verification is successful, a response signal is sent to the relay satellite node through the self laser communication equipment to complete the establishment of the laser communication link.
As shown in fig. 4, the relay satellite node remotely controls the task satellite nodes in the satellite cluster to execute the safety response protection processing operation, which specifically includes the following steps:
s21: the relay satellite node acquires state operation information and basic safety parameter data of the task satellite node through a laser communication link established with the task satellite node;
s22: and the relay satellite node judges whether safety threat exists according to the acquired state operation information and the basic safety parameter data and carries out corresponding safety response protection processing operation.
It should be explained that the safety response guard processing operations include, but are not limited to: the method comprises the steps of controlling the running state of the task satellite node, updating software and firmware of the task satellite node, encrypting communication data, monitoring network traffic of the task satellite node and the like.
Preferably, as an embodiment; the state operation information comprises network flow of the current task satellite node, hardware operation state information and task execution information.
Preferably, as an embodiment; the basic security parameter data comprise encryption algorithm rules, preset access control list rules and security upgrading rules.
Preferably, as an embodiment; the encryption algorithm rule comprises any one of AES and RSA.
Preferably, as an embodiment; the access control list rule comprises a preset constructed access control list; the access control list includes pre-authorized devices that have direct access to the satellite.
Preferably, as an embodiment; the security upgrading rule is a preset time period for updating and upgrading the software and firmware on the satellite at regular intervals and a storage mode for updating and upgrading.
Access control list rules: ensuring that only authorized users or devices can access the satellite system. This may be achieved by means of a password, encryption key, access control list, etc.
Encryption algorithm rules: sensitive data is encrypted using cryptographic algorithms to prevent unauthorized visitors from obtaining sensitive information. Common encryption algorithms for satellite communication systems include AES, RSA, etc.
Security upgrade rules: the software and firmware on the satellite are updated and upgraded regularly to repair the known security hole, and the storage mode of updating and upgrading is provided at the same time, so that the stronger security performance is finally provided through the security upgrading rule.
Preferably, as an embodiment; the method also comprises the following operation steps of; the secondary confirmation processing module is used for calling the security log record of the task satellite node after the task satellite node is primarily determined to have security threat; further confirming and judging whether the current task satellite node has security threat or not through the security log record;
as shown in fig. 5, the step of further confirming and judging whether the current task satellite node has a security threat through the security log record specifically includes:
s31: the task satellite node records various security log records during the operation process.
Security log record: the operation and events of the satellite system are recorded for security auditing and investigation. The security log may include log records, access records, exception records, and the like.
The contents of the security log records may also be divided into data forms including time stamps, event types, event descriptions, operator identification, etc. for subsequent analysis and auditing. The security log records may be stored in a storage device internal to the satellite or may be transmitted to a ground station or data center for centralized management via an inter-satellite communication link.
S32: the ground station or the data center is responsible for analyzing and auditing the security log records to find out whether the security threat exists or not through secondary confirmation.
It should be noted that, the security log analysis and audit can adopt techniques such as machine learning, data mining, etc., and identify abnormal behaviors and security events through analysis and comparison of a large amount of log data. The security log analysis and audit can be integrated with other security monitoring systems, and the discovery and response capability of security threats can be improved through comprehensive analysis of a plurality of security data sources.
In the security log analysis and auditing process, if abnormal behavior or security events are found, it is necessary to further confirm whether a security threat exists. The security threat validation may further determine whether a security breach or attack exists through comparison and verification with other security monitoring systems. Upon confirming the existence of a security threat, corresponding security response measures including, but not limited to, isolating the affected mission satellite nodes, repairing vulnerabilities, updating software and firmware, enhancing access control, etc. need to be taken in time.
In summary, the satellite-to-ground data transmission link safety transmission system provided by the invention improves the safety of data transmission by utilizing the construction of the relay satellite node, avoids the satellite from being attacked by safety, improves the reliability and stability of the system by protecting the security threats such as data leakage, tampering, malicious attack and the like, and finally ensures the normal operation of the satellite cluster network and the safety of the data.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; modifications of the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features thereof, may be made by those of ordinary skill in the art; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The satellite-ground data transmission link safe transmission system is characterized by comprising a plurality of task satellite nodes, relay satellite nodes, ground stations and a data center;
the task satellite node is a task satellite comprising a satellite body; the relay satellite node is a relay communication satellite comprising a satellite body; the task satellite node and the relay satellite node construct a satellite cluster;
the relay satellite nodes are used for respectively establishing inter-satellite laser communication links with a plurality of task satellite nodes to finish relay communication operation; the relay satellite node is also used for remotely controlling the task satellite nodes in the satellite cluster to execute safety response protection processing operation;
the ground station is used for communicating with the task satellite node through the relay satellite node to finish data transmission operation;
the data center is used for managing data in the satellite cluster.
2. The satellite-to-ground data transmission link secure transmission system of claim 1, further comprising a communication link establishment module; the communication link establishment module is arranged at the relay satellite node and is used for sending laser beam signals and link encryption keys to the task satellite node; after receiving the laser beam signal, the task satellite node carries out demodulation processing and analyzes to obtain a target link encryption key; the communication link establishment module is also used for verifying the target link encryption key, and after verification is successful, a response signal is sent to the relay satellite node through the self laser communication equipment to complete establishment of the laser communication link.
3. The satellite-to-ground data transmission link secure transmission system of claim 1, further comprising a response processing module; the response processing module is arranged at the relay satellite node and is used for acquiring state operation information and basic safety parameter data of the task satellite node through a laser communication link established with the task satellite node; judging whether safety threat exists or not according to the acquired state operation information and basic safety parameter data, and carrying out corresponding safety response protection processing operation.
4. The satellite-to-ground data transmission link safety transmission system according to claim 1, further comprising a secondary acknowledgement processing module; the secondary confirmation processing module is used for calling the security log record of the task satellite node after primarily recognizing that the task satellite node has security threat; and further confirming and judging whether the current task satellite node has security threat or not through the security log record.
5. A satellite-to-ground data transmission link secure transmission method, which is processed by the satellite-to-ground data transmission link secure transmission system according to any one of claims 1 to 4, and is characterized by comprising the following operation steps:
the relay satellite nodes respectively establish inter-satellite laser communication links with a plurality of task satellite nodes to finish relay communication operation;
the relay satellite node remotely controls task satellite nodes in the satellite cluster to execute safety response protection processing operation;
the ground station communicates with the task satellite node through the relay satellite node to complete data transmission operation;
the data center manages data in a cluster of satellites.
6. The method for safely transmitting the satellite-to-ground data transmission link according to claim 5, wherein the relay satellite node establishes inter-satellite laser communication links with a plurality of task satellite nodes respectively to complete relay communication operation, and specifically comprises the following steps:
the relay satellite node sends a laser beam signal and a link encryption key to the task satellite node through self laser communication equipment;
after receiving the laser beam signal, the task satellite node uses the self laser communication equipment to carry out demodulation processing and analyzes to obtain a target link encryption key;
and the task satellite node verifies the target link encryption key, and after verification is successful, a response signal is sent to the relay satellite node through the self laser communication equipment to complete the establishment of the laser communication link.
7. The satellite-to-ground data transmission link safe transmission method according to claim 6, wherein the relay satellite node remotely controls a task satellite node in the satellite cluster to execute a safe response protection processing operation, and specifically comprises the following operation steps:
the relay satellite node acquires state operation information and basic safety parameter data of the task satellite node through a laser communication link established with the task satellite node;
and the relay satellite node judges whether safety threat exists according to the acquired state operation information and the basic safety parameter data and carries out corresponding safety response protection processing operation.
8. The satellite-to-ground data transmission link secure transmission method according to claim 7, wherein the state operation information includes network traffic of a current task satellite node, hardware operation state information, task execution information; the basic security parameter data comprise encryption algorithm rules, preset access control list rules and security upgrading rules.
9. The method for secure transmission of satellite-to-ground data transmission links according to claim 5, further comprising the steps of; the secondary confirmation processing module invokes the security log record of the task satellite node after primarily recognizing that the task satellite node has security threat; and further confirming and judging whether the current task satellite node has security threat or not through the security log record.
10. The method for securely transmitting satellite-to-ground data transmission links according to claim 9, wherein the step of further confirming and judging whether the current task satellite node has a security threat through security log records comprises the following steps: the task satellite node records various security log records in the running process; the ground station or the data center is responsible for analyzing and auditing the security log records to find out whether the security threat exists or not through secondary confirmation.
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