Analyzing the peculiar features of GLONASS system’s complementary high-orbital space complex technical implementation
The article considers the implementation features of the high-orbital space complex (HOSC) that complements the GLONASS system. It is shown that the conditions of the HOSC navigation devices proper use in geosynchronous orbits greatly differ compared to GLONASS orbits due to the increase in the distance between the satellite and the land user as well as the growth of the perturbation influence of unmodelled accelerations conditioned by the inaccuracies of the radiation pressure model. Parity with the GLONASS satellite on the level of the navigation signal accepted by the terrestrial consumers when moving to a different type of orbit is possible by means of complicating the HOSC satellite structure, implementing the customized software of the HOSC control center different from the one used in the GLONASS control center as well as making changes to the navigation signal information structure. It is concluded that the benefits provided by the HOSC can be achieved with less effort, firstly, by means of adding the regularly used satellites to the existing orbital planes followed by a uniform reallocation of the entire orbital constellation satellites according to the latitude argument, and secondly, due to the placement of GLONASS satellites in the additional orbital planes located between the existing planes. The proposed options for expanding the GLONASS system with standard circular orbits are not inferior in observability to the alternative of complimenting the GLONASS HOSC system, but in contrast to it provide a high observability on a global scale, and not only in the Russian Federation
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