Positioned primarily in geostationary orbits (GEO), they ... There are two primary types of space-based navigation systems: Global Navigation Satellite Systems (GNSS) consist of satellites that ...

Geostationary satellites take 24 hours to orbit the Earth, so the satellite appears to remain in the same part of the sky when viewed from the ground. These orbits are much higher than polar ...

satellites take 24 hours to orbit the Earth, so the satellite appears to remain in the same part of the sky when viewed from the ground. These orbits are 36,000 km above the equator and the ...

Satellite orbits and clocks are determined using observation data from a global GNSS network ... 5: Influence of the antenna thrust on the radial component of the satellite orbit for different types ...