Wei Zhang
ABSTRACT
At present, most multicast communication constellation systems use single track constellation. Most use geostationary orbit satellites (GEO satellites). As a result, the coverage performance of the constellation is limited in the north and south poles and high latitudes. To solve this problem, this paper considers the design of multicast constellation from the perspective of hybrid constellation design, and adopts satellites with different orbital types to form the constellation, which complement each other's advantages. At the same time, not only the coverage characteristics of the constellation are considered, but also the combined network coding is used to optimize the configuration of the constellation design. In this paper, a hybrid constellation of 3 GEO plus 6 IGSO satellites is designed, and the coverage performance of the constellation is analyzed. The simulation results show that the proposed method can meet the global seamless coverage with fewer satellites, and can only rely on domestic customs stations to transmit information to the ground.
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