Low-orbit satellite short data communication channel agile distribution method

Abstract

The invention proposes a low-orbit satellite short data communication channel agile distribution method, and designs an idle channel evaluation strategy based on the sampling power judgment; and meanwhile, prior measurement data of a target frequency band and the ground network frequency distribution condition are fully considered, the idle degrees of alternative channels are sorted, and channel agile distribution and switching are carried out on low-orbit satellites. Compared with a traditional channel fixed distribution and access method, the low-orbit satellite short data communication channel agile distribution method provided by the invention improves the spectrum application efficiency of the satellite short data communication, effectively avoids the interference of a system itself and the interference to other systems, and solves the problem of scarcity of frequency resources; and the low-orbit satellite short data communication channel agile distribution method can effectivelyrealize multi-system compatibility under limited spectrum resources, improve the anti-interference performance and frequency use efficiency of a satellite communication system, and has the characteristics of being simple in process, high in flexibility and high in feasibility.

Description

technical field [0001] The invention belongs to the field of satellite communication, and relates to a satellite constellation short data communication channel perception allocation method. Background technique [0002] Satellite communication has the advantages of wide coverage, station construction cost and communication cost independent of distance, etc. It is an indispensable means to realize global mobile communication, especially suitable for mobile communication needs in areas where it is difficult to lay wired communication facilities. In the field of satellite communication, the satellite short data communication system composed of low-orbit small satellite constellations uses the information obtained by widely dispersed communication terminals and ground sensors as the data source, and uses small satellite constellations to realize large-area terminal communication and information perception. Provide users with services such as mobile voice communication, short dat...

AI Technical Summary

Problems solved by technology

[0006] At present, there is no low-orbit satellite constellation system for mobile communication and data collection services in my country. The scarcity of spectrum resources and the single channel allocation strategy are important factors restricting the development of low-orbit satellite communication systems in my country.

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