On the Network Characterization of Nano-Satellite Swarms

• Main Authors: Akopyan, Evelyne, Dhaou, Riadh, Lochin, Emmanuel, Pontet, Bernard, Sombrin, Jacques
• Format: Conference Proceeding
• Language: English
• Subjects: Energy consumption; Graph Theory; Moon; Network Characterization; Protocols; Radio interferometry; Space missions; Space vehicles; Swarm of Nano-Satellites; Wireless communication
• ISSN: 2642-7389
• DOI: 10.1109/ISCC58397.2023.10218020

Low-frequency radio interferometry is crucial to understanding the universe and its very early days. Unfortunately, most of the current instruments are ground-based and thus impacted by the interferences massively produced by the Earth. To alleviate this issue, scientific missions aim at using Moon-orbiting nano-satellite swarms as distributed radio-telescopes in outer space, keeping them out of Earth interference range. However, swarms of nano-satellites are systems with complex dynamics and need to be appropriately characterized to achieve their scientific mission. This paper presents a methodology based on graph theory for characterizing the swarm network system by computing graph theory metrics around three properties: the node density, network connectivity and ISL availability. We show that these properties are well-suited for highlighting a possible heterogeneity in a network and adapt a routing strategy accordingly. This work is the first milestone in defining the best-suited routing strategy within the swarm from the derived network properties.