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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

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Penalty-function guidance for multiple satellite cluster formation

McInnes, C.R. and Hiroaki, U. (2005) Penalty-function guidance for multiple satellite cluster formation. Journal of Guidance, Control and Dynamics, 28 (1). pp. 182-185. ISSN 0731-5090

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Abstract

Distributed systems with a cluster of multiple artificial satellites have been considered to be beneficial for telecommunications1,2 and other science missions.3 Therefore, advanced operations of a cluster formation have a crucial role on such space applications. Clustering of two satellites has already been studied by analyzing just one relative orbit of the Clohessy-Wiltshire (CW) rotating coordinate frame (see Ref. 4). Near-miss avoidance imposes more complex constraints as a cluster is composed of more satellites. It is probable that one satellite escaping from another satellite encounters other satellites if near-miss avoidance strategy between all of the satellites in close proximity is not fully considered. One solution is to accelerate the respective satellites as if they have virtual repulsion. Such potential fields have been formulated and imposed on the state-variable space to form an equidistant constellation around the Earth5 and a cluster center,6 respectively. Other solutions have been also proposed: graph theory for switching the roles of leaders and followers7 and mixed-integer linear programming.