Galileo – Navigation System

Galileo – Europe’s global navigation satellite system. It supports transportation, communication, and scientific applications with European-built accuracy and independence.

Mission Objective

Galileo is a global navigation satellite system that has been operating in Europe since 2016.

Mission Significance

Galileo stands out for its superior accuracy, thanks to a multitude of satellites enhancing precise object positioning. Unlike other global navigation systems designed primarily for military use, such as the US GPS, Russian GLONASS, and Chinese BeiDou, Galileo was uniquely crafted to cater to civilian needs, making it a versatile and precise solution for various applications.

Source: ESA

System’s Characteristics

• Finite Number of Satellites: 30
• Inclination of Orbital Plains: 56 degrees to the equator

Methodology Overview

The project’s workflow can be understood by their work method:

• Two Galileo Control Centers (GCCs): These canters have been established within Europe for two crucial purposes. Firstly, they take charge of satellite control, ensuring proper functioning and navigation mission management. Secondly, they handle the data from a widespread Galileo Sensor Stations network.
• Galileo Sensor Stations (GSSs): Galileo Sensor Stations form a global network and collect essential data. This data is transmitted via a redundant communications network to the Galileo Control Centers (GCCs).
• Search and Rescue function (SAR): The satellites are outfitted with transponders capable of relaying distress signals from user transmitters to regional rescue coordination centers. Meanwhile, the user on the ground will receive a response signal informing him that help is coming. These centers subsequently initiate rescue operations based on the received signals.

Source: EUSPA

Mission Main Goals

One of Galileo’s goals was to establish an independent, high-precision positioning system so Europe wouldn’t have to use the US or Russian navigation systems.

Mission Participants

The project’s creator is the European Union through the European Space Agency (ESA). However, the leading operator of the project is the European Union Agency for the Space Program (EUSPA). Through the years, there have been many collaborations and supporters of the project and a few opposers. Among the supporters were China, Israel, Ukraine, Morocco, India and much more. The support was reflected in various ways, such as funding, partnership, and full participation in the project.