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Guidance and Control for Spacecraft Planar Re-Phasing via Input-Shaping and Differential Drag

This paper proposes a solution to the problem of re-phasing circular or low eccentricity orbiting, short-distance spacecraft, by integrating existing analytical guidance solutions based on input-shaping and analytical control techniques for differential drag based on Lyapunov theory. The combined guidance and control approach is validated via numerical simulations in a full nonlinear environment using Systems Tool Kit. The results show promise for future onboard implementation on propellant-less spacecraft.