Description: The subsystem of spacecrafts of GLONASS system consists of 24 satellites which are in circular orbits 19100 km high, an inclination 64,8 ° and a cycle time of 11 hours 15 minutes in three orbital planes. The orbital planes are carried on longitude on 120 °. In each orbital plane take place on 8 satellites with uniform shift on argument of width 45 °. Besides, in the planes position of satellites are shifted relatively each other on argument of width on 15 °. Such configuration of PKA allows to provide a continuous and global covering of a terrestrial surface and near-earth space with a navigation field.
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