Article (Scientific journals)
Delta-V-optimal centralized guidance strategy for under-actuated N-satellite formations
MAHFOUZ, Ahmed; Gaias, Gabriella; Dalla Vedova, Florio et al.
2025In Acta Astronautica, 228, p. 69 - 87
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Keywords :
Convex optimization; Convexification; Formation flying; Relative Orbital Elements; Relative trajectory optimization; Sequential convex programming; Convex optimisation; Delta-V; Relative orbital elements; Satellites formation; Trajectory optimization; Underactuated; Aerospace Engineering
Abstract :
[en] This paper addresses the computation of Delta-V-optimal, safe, relative orbit reconfigurations for satellite formations in a centralized fashion. The formations under consideration comprise an uncontrolled chief spacecraft flying with an arbitrary number, N, of deputy satellites, where each deputy is equipped with a single electric thruster. Indeed, this represents a technological solution that is becoming widely employed by the producers of small-satellite platforms. While adopting a single electric thruster does reduce the required power, weight, and size of the orbit control system, it comes at the cost of rendering the satellite under-actuated. In this setting, the satellite can provide a desired thrust vector only after an attitude maneuver is carried out to redirect the thruster nozzle opposite to the desired thrust direction. In order to further extend the applicability range of such under-actuated platforms, guidance strategies are developed to support different reconfiguration scenarios for N-satellite formations. This paper starts from a classical non-convex quadratically constrained trajectory optimization formulation, which passes through multiple simplifications and approximations to arrive to two novel convex formulations, namely a second-order cone programming formulation, and a linear programming one. Out of five guidance formulations proposed in this article, the most promising three were compared through an extensive benchmark analysis that is applied to fifteen of the most widely-used solvers. This benchmark experiment provides information about the key distinctions between the different problem formulations, and under which conditions each one of them can be recommended.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > ARG - Automation & Robotics
Disciplines :
Aerospace & aeronautics engineering
Author, co-author :
MAHFOUZ, Ahmed  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Automation
Gaias, Gabriella ;  Department of Aerospace Science and Technology, Politecnico di Milano, Milan, Italy
Dalla Vedova, Florio;  LuxSpace, Betzdorf, Luxembourg
VOOS, Holger  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Automation
External co-authors :
yes
Language :
English
Title :
Delta-V-optimal centralized guidance strategy for under-actuated N-satellite formations
Publication date :
March 2025
Journal title :
Acta Astronautica
ISSN :
0094-5765
eISSN :
1879-2030
Publisher :
Elsevier Ltd
Volume :
228
Pages :
69 - 87
Peer reviewed :
Peer Reviewed verified by ORBi
FnR Project :
FNR14302465 - Development Tool For Autonomous Constellation And Formation Control Of Microsatellites, 2019 (01/09/2020-31/08/2023) - Holger Voos
Name of the research project :
Development Tool For Autonomous Constellation And Formation Control Of Microsatellites - AuFoSat
Funders :
Fonds National de la Recherche Luxembourg
Funding number :
BRIDGES/19/MS/ 14302465
Funding text :
This research was funded in whole, or in part, by the Luxembourg National Research Fund (FNR) , grant reference BRIDGES/19/MS/14302465 . For the purpose of open access, and in fulfilment of the obligations arising from the grant agreement, the author has applied a Creative Commons Attribution 4.0 International (CC BY 4.0) license to any Author Accepted Manuscript version arising from this submission.This research was funded in whole, or in part, by the Luxembourg National Research Fund (FNR), grant reference BRIDGES/19/MS/ 14302465. For the purpose of open access, and in fulfillment of the obligations arising from the grant agreement, the author has applied a Creative Commons Attribution 4.0 International (CC BY 4.0) license to any Author Accepted Manuscript version arising from this submission.
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