Satellite network architecture with network reconstruction capability

Abstract

The invention provides a satellite network architecture with a network reconstruction capability. The architecture comprises a space-based network and a land backbone network, the space-based networkcomprises a space-based backbone network, a space-based access network and a space-based sensing network, wherein the space-based backbone network is mainly composed of geosynchronous orbit satellites, the space-based access network is mainly composed of low-orbit satellite constellations, and the space-based sensing network is mainly composed of any one or any combination of remote sensing satellites, meteorological satellites and navigation satellites. The method has the beneficial effects that the architecture design problem of a space-based information network for joint networking and fusion utilization of high, medium and low orbit satellites and cooperative work of communication, navigation and remote sensing satellites is solved, integrated utilization of various satellite resourcesin the existing space is realized, and a hybrid heterogeneous satellite network architecture with a satellite network flexible reconstruction function is built.

Description

technical field [0001] The invention relates to a satellite network architecture, in particular to a satellite network architecture with network reconfiguration capability. Background technique [0002] Space-ground integrated information network is an information infrastructure research and construction project. Through the integration of space-based satellite communication network, space-based aircraft communication network, and ground-based land communication network, the coordination of space, air, and ground networks is realized, and global coverage can be achieved everywhere. The goal of access, on-demand services, and secure and trusted global network connectivity. [0003] The space-ground integrated information network consists of three networks. The first network is a space-based information network composed of various satellites. It forms a collaborative network of communication, navigation, and remote sensing satellites in space as a space information infrastruc...

AI Technical Summary

Problems solved by technology

For satellite communication in geosynchronous orbit, because the satellite is far away from the earth, the communication propagation delay is obvious; at the same time, because the relative position of the satellite and the earth is a fixed position above the equator, all geosynchronous orbit satellites cannot effectively cover the poles region; finally, due to the scarcity of geosynchronous orbit location resources and limited frequency resources, even if high-throughput satellites have been put into use in recent years, the limited number of geosynchronous orbit satellites still cannot meet the growing communication needs, and the gap is huge

[0009] As for the medium and low orbit satellite constellation system, because it cannot keep relatively stationary with the earth, it has been constantly flying around the earth, so its communication link stability is not as good as that of geosynchronous orbit satellites. At the same time, the signal tracking ability of the terminal antenna It has high requirements, which greatly increases the cost of user terminals

In addition, if the low-orbit satellite system is to achieve effective global coverage, the number of low-orbit communication satellites required in its constellation is huge. For example, SpaceX recently submitted a total of 4425 satellites to the Federal Communications Commission (FCC). Satellite low-orbit constellation network plan, the first-generation low-orbit constellation system that OneWeb will start operating in 2019 has also reached 882 satellites, and has planned to add 2,000 satellites. A large number of satellites will greatly intensify space satellite orbits. Due to the contradiction of tight bit and frequency resources, it is very difficult to fully implement all low-orbit satellite plans

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