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A Finite State Machine Guidance Architecture for Autonomous Rendezvous with Arbitrarily Elliptic Targets
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A Finite State Machine Guidance Architecture for Autonomous Rendezvous with Arbitrarily Elliptic Targets
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Journal Article
A Finite State Machine Guidance Architecture for Autonomous Rendezvous with Arbitrarily Elliptic Targets
2026
Overview
This paper details the design of a guidance architecture, in the form of a layered, finite state machine, meant to enable safe and autonomous rendezvous operations. The onboard software uses relative state parametrization based on relative orbital elements which provide significant geometrical insight into the shape of the relative orbit. The development is structured in two main steps: first, novel closed-form impulsive control schemes, derived from the Gauss Variational Equations expressed in a velocity-aligned frame, are formulated. These complement available strategies from the literature and generalize them for arbitrarily eccentric reference orbits. Secondly, the definition of the guidance layer provides the chaser spacecraft with the capability to select, schedule, and execute the proper maneuvers to complete a given rendezvous scenario, ensuring operational safety and predictability. The functionality and performance of the implemented architecture are analyzed through numerical tests in a linear propagator and a high-fidelity non-linear simulator. The results provide validation of the developed maneuvers’ strategies, as well as demonstrating how the proposed guidance architecture can be used in a straightforward fashion across different target orbit scenarios, while guaranteeing the same level of passive safety.
Publisher
MDPI AG
Subject
