Multiple Sliding Surface Guidance applied at binary asteroid systems

Proximity operations at binary asteroid systems involve higher degrees of complexity due to added perturbations. In this paper, we adapt a Multiple Sliding Surface Guidance (MSSG) algorithm developed for close proximity operations at a single asteroid, and extend its applicability to binary asteroid systems. The advantage of using MSSG is that no trajectory is needed to be computed offline as the commands use the spacecraft accelerations directly. We show simulations of a two-sphere binary systems. The velocity cost and associated transfer times show to be minimal.