Status and Development Prospects of Orbital Structures of Navigation Satellite Systems

The current status and development prospects of existing and newly created global and regional navigation satellite systems are assessed. The main characteristics of these systems determined by the ballistic structure of orbital construction are presented. The requirements are formulated, which are imposed on the structure of orbital constellation, and the main trends in development of foreign systems are revealed. Based on the performed analysis, the important performance characteristics of the domestic GLONASS are compared with those of foreign systems at the current moment and in the future. Feasibility is shown to achieve the competitive level of the GLONASS characteristics in the field of implemented accuracy of navigation determinations, the constellation availability and composition by 2020.

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