Self-organizing directional network system and communication method thereof

Abstract

The invention discloses a self-organizing directional network system and a communication method thereof. The self-organizing directional network system comprises a plurality of nodes, wherein each network node comprises a controller, a frequency processor and an antenna device; an antenna device which comprises a plurality of antenna components respectively arranged according to positive and negative directions of a multi-dimensional space coordinate system; a controller which controls a transmitting signal to be subjected to frequency conversion amplification processing through the frequency processor through the single transmitting channel, then selects transmitting feed source transmitting signals of the two antenna components in one dimension, controls the two antenna components in different dimensions and different directions through the double receiving channels to receive feed source receiving signals, and performs diversity processing on the receiving signals after frequency conversion processing, and therefore, each node satisfies the design of transmitting circular polarization and receiving linear polarization, thereby achieving the purpose of controlling the polarization loss between the nodes. The problems of power amplifier sharing and receiving and transmitting antenna isolation under the same-frequency half-duplex working condition are solved, and polarization loss caused by random relative positions between networking terminals is controlled through receiving and transmitting polarization design.

Description

technical field [0001] The invention relates to the field of networking communication of spacecraft, in particular to an ad hoc directional network system and a communication method thereof. Background technique [0002] In inter-device communication applications, due to the antenna layout and the spatial attenuation characteristics of electromagnetic waves, a directional topology network is often used, that is, multiple directional antennas are used to perform directional transmission according to mutual positions, so as to take into account both directional coverage and transmission gain. [0003] For example, in the S-band and below, generally only two antennas can basically realize omnidirectional communication. For example, for application scenarios with limited equipment volume, affected by antenna size factors, C-band and above frequency bands are generally used, and antenna combinations in at least 6 directions are usually required to meet omnidirectional communicati...

AI Technical Summary

Problems solved by technology

[0005] There are usually two ways of directional networking equipment commonly used today. One is to use multiple phased array antennas to control the transceiver mode and beam direction of the transceiver components to achieve directional communication according to communication requirements, but it needs to be designed. Although complex phased array antennas can form directional narrow beams, compared with directional antennas, they require higher power consumption and higher costs in scenarios where random access is required for wide beam coverage;

[0006] One is to use multiple sets of directional antennas and power amplifiers to achieve directional communication by controlling the switches of the power amplifiers and the transceiver mode control of the receiver, but it needs to be equipped with multiple power amplifiers. Although the cost and weight are reduced compared to the phased array, However, since multiple power amplifiers do not need to work at the same time, there is a large room for optimization in the design

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