A Distributed Star Group Networking Method Based on Liquid Crystal Optical Multi-beam Antenna

Abstract

The invention discloses a distributed constellation network method based on a liquid crystal optical multi-beam antenna, comprising the following steps: determining the number of distributed constellation satellites, the number of equipped antennas and the network structure; according to the performance index of the liquid crystal optical multi-beam antenna, determining Boundary conditions of multi-beam laser links; design of multi-satellite co-location strategies for distributed constellations; design of network topology control methods within distributed constellations. The method of the present invention uses liquid crystal optical multi-beam antennas to construct a distributed constellation network, which can meet the requirements of multi-beam generation, multi-beam forming and high-speed data transmission of the constellation network, and has the characteristics of small size, low power consumption and low cost; The flat longitude-flat eccentricity isolation strategy realizes multi-satellite co-location, which has the characteristics of a large number of co-located satellites and high security; the greedy strategy is used for network topology management, which can adapt to different scales, different computing capabilities, and different topology performance requirements distributed constellation network.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a method for distributed star group network based on liquid crystal optical multi-beam antenna. Background technique [0002] Space-distributed constellations have the advantages of high orbital utilization, large synthetic beam coverage, support for flexible reconstruction, on-orbit self-healing, and distributed joint computing. It is one of the important ways to build a space-based backbone network. Considering the massive data transmission requirements of the future space information network and the high real-time requirements of users for various information services, the distributed constellation will use laser links for networking and data transmission. Traditional laser communication usually uses mechanical optical antennas for point-to-point laser communication, while high-speed laser networks in distributed constellations require satellite nodes to have high dynami...

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Problems solved by technology

The inter-satellite high-speed laser network based on liquid crystal optical multi-beam antennas has limitations such as limited laser link distance, limited pointing angle, and long link establishment time. In the application scenario where the relative spatial positions of distributed constellation satellite nodes change rapidly, How to rationally design the multi-satellite co-location strategy, network topology, and topology control method of the constellation to realize the distributed constellation network based on liquid crystal optical multi-beam antennas is an important problem to be solved urgently

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