Category Archives: Galileo Services

Galileo Services

Positioning computation

The key in the positioning computation is the pseudorange or distance to the satellite. The navigation receivers calculate the pseudorange to each satellite under visibility by measuring the elapsed time between the transmission and reception of GNSS signals. To compute the position of a GNSS receiver a minimum of 4 satellites under visibility (4 pseudoranges) are needed, although the accuracy will improve with higher number of satellites. Read more…

What is Galileo?

Galileo Constellation

Galileo Constellation

Galileo is a European Global Navigation Satellite System, providing high accuracy global positioning service. It is inter-operable with GPS (USA) and Glonass (Rusia). It will consist of 30 satellites (27 operational + 3 spares), positioned in 3 circular Medium Earth Orbit (MEO) planes at 23,222 km altitude above the Earth, and at an inclination of the orbital planes of 56º to the equator. It will provide good coverage even at latitudes up to 75º north, the most northerly tip of Europe. Read more…