In the last decade, In-orbit servicing and active debris removal gained a lot of interests in the scientific community, both for the need of keeping the LEO orbit accessible and for the economic reasons that the implementation of this kind of missions can bring. In fact, the aims of in-orbit servicing are to repair, refuel, upgrade, de-orbit or extend the life of satellites, making missions last longer. Therefore, debris presence around Earth orbit will be reduced, diminishing the risks for space missions. In this scenario, to safely accomplish mission’s goals, it’s crucial to implement innovative GNC techniques that can be considered reliable and adaptable to different scenarios.