A Study on Global Satellite Constellation for Satellite Navigation.

This paper discusses several types of global satellite constellations applied for the integrated satellite mission which accomplishes radio navigation, mobile communication and earth observation globally, and mainly considers position determination (navigation) accuracy achieved by these constellations. Satellite constellations in low altitude orbits are unsuitable for continuous positioning because numerous satellites must be deployed on orbits and the maintenance cost becomes expensive, so satellite orbits more than 20, 000km are investigated in this paper. Furthermore, this paper discusses the continuous expansion of satellite deployment which enables the improvement of the integrated satellite mission for the developing phase.