Output-Feedback Full-State Targeting Model Predictive Control for Station-Keeping on Near-Rectilinear Halo Orbits
We develop a model predictive control (MPC) policy for station-keeping (SK) on a Near-Rectilinear Halo Orbit (NRHO). The proposed policy achieves full-state tracking of a reference NRHO via a two-maneuver control horizon placed one revolution apart. Our method abides by the typical mission requirement that at most one maneuver is used for SK during each NRHO revolution. Simultaneously, the policy has sufficient controllability for full-state tracking, making it immune to phase deviation issues in the along-track direction of the reference NRHO, a common drawback of existing SK methods with a single maneuver per revolution. We report numerical simulations with a navigation filter to demonstrate the MPC's performance with output feedback. Our approach successfully maintains the spacecraft's motion in the vicinity of the reference in both space and phase, with tighter tracking than state-of-the-art SK methods and comparable delta-V performance.
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