Interference avoidance system and method for spatial internet constellation

Abstract

The invention discloses an interference avoidance system for a spatial internet constellation. The interference avoidance system comprises a strategy setting module, a satellite orbit and beam coverage module, an interference avoidance module, a link scene construction module and a link interference calculation module; the strategy setting module is used for presetting one or more interference avoidance strategies in a preset set including satellite attitude adjustment, airspace isolation, beam closing and power reduction; the satellite orbit and beam coverage module is used for generating a satellite beam and ground station initial mapping table; the processor is also used for recalculating the positions of the satellite and the ground station and updating the initial mapping table of thesatellite beam and the ground station when receiving the satellite attitude description parameter table output by the interference avoidance module; and the interference avoidance module is used fortaking an interference avoidance strategy and a tracking strategy as constraints, taking a mapping relationship between ground stations and satellite beams as a link allocation basis, and calculatingto obtain actual link establishment conditions and link characteristic parameters of the satellite beams and the ground stations.

Description

technical field [0001] The invention relates to the field of space interference avoidance, in particular to an interference avoidance system and method for space Internet constellations. Background technique [0002] In order to solve the problem of frequency compatibility between space Internet constellation systems, interference avoidance measures are mainly formulated from four aspects: air domain, time domain, polarization and power control, and frequency domain. [0003] 1) Airspace isolation technology [0004] Airspace isolation includes two forms: one is airspace isolation based on restricted area technology, where the angular interval of X° is set with reference to the equatorial plane to determine the range of restricted area, and corresponding measures are taken to prevent the main beam of the NGSO satellite antenna from colliding with the main beam of the GSO ground station antenna. Coupling occurs; the other is airspace isolation based on the link separation an...

AI Technical Summary

Problems solved by technology

[0012] The design of the existing interference avoidance methods basically stays in the qualitative description, and there are few explanations or quantitative descriptions in the space Internet constellation design or actual operation. In the world, only OneWeb has disclosed its "pitch progressive" interference avoidance strategy. The specific design is still a black box, and the current exploration in the field is still an international difficulty

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