The performance of a single satellite system depends upon the performance of that satellite. Whereas, the performance of a multiple satellite cooperation system depends upon not only satellite performance but also the formation of the satellites. Therefore, if we can control the satellite formation, then the controlled formation could improve the performance of a multiple satellite cooperation system. In this study, we have analyzed the effectiveness of controlling the satellite formation by simulation. We used real orbit data of existing Global Positioning System (GPS) for simulation. In particular, we focused on the relationship between satellite formation and the coverage ratio of GPS. As a result, our simulation indicated that the coverage ratio of GPS on the earth's surface could improve by approximately a maximum of 9%.
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