Station-Keeping Techniques for Unstable Libration Points

This paper covers a number of approaches to hold a spacecraft in the surrounding area of the L2 libration point of the Solar-Earth system. The main aim of this study was to conduct a comparative analysis of several different methods of holding SC near the libration point, which includes application of those methods to the movement model of a SC in the Solar-Earth system, taking a large statistical selection of data on a basis of this model and comparison of methods on a basis of this selection. These methods can be applied to study other libration points and also other types of systems. The algorithm of holding SC near the libration point has been successfully implemented and applied during the research. As a matter of fact, the results show that different methods have varied pros and cons to them, when applied to the same set of data. As a consequence, the received results allow one to understand, which factors influence the process of choosing one or another method the most. Moreover, it can be observed that further research can be made based upon a move variative selection of data.