Orbit Design And Analysis For Collocated Satellites

Geostationary(GEO) orbit is one kind of limited "natural resource" since only limited satellites can be contained on it. However. GEO satellites have very important application values and have higher and higher call due to their big military, economic, and social benefits. In order to resolve the contradiction between the large demands and the limited resources, multi-satellites collocated technologies were paid much more attentions recently, which can make several satellites running on a same nominal location. Therefore, a lot of work has been conducted in this thesis concerning the analysis, design, and control of the multi-satellite collocated orbit as follows.First of all. the requirements and constraints are analyzed for the GEO collocated satellites, and the specifications are defined for the design of the collocated orbit.And then, relative-orbit-type strategies are designed for several typical collocated satellite clusters based on the analysis of the isolation and relative motions of the clusters.Thirdly, orbit alterations are analyzed based on the orbit alteration equations and are demonstrated by the numerical analysis.Finally, orbit keeping strategies are studied for the collocated satellite clusters to reject the effects of the orbit alterations on the collocated orbit.Theoretical and simulation analysis indicate that the research results obtained in the thesis are feasible, which can be applied to the analysis, design, and control of the GEO collocated satellite clusters. Additionally, these results would be very valuable in applications because they not only can make full use of the orbit resource, and augment the capacity of the GEO orbit effectively, but also can improve the reliability of the satellite clusters.