Galileo: Europe's Non-Military Satellite Navigation System

Galileo is a European Union initiative to create a non-military alternative to GPS and GLONASS. Currently, it has two test satellites, with plans to launch four validation satellites. These satellites test hardware, especially high-accuracy clocks. The system will eventually have 27 satellites, with 3 spares, providing public access and enhanced reliability when combined with GPS. A subscription service will offer 1-meter accuracy for professionals.

What is the primary purpose of developing the Galileo system?

• To replace the American GPS system

• To provide a non-military alternative to existing systems

• To compete with the Russian GLONASS system

• To offer free navigation services worldwide

What is the main focus of the validation satellites in the Galileo system?

• Testing solar panel efficiency

• Testing fuel efficiency for orbital adjustments

• Testing high accuracy clocks

• Testing communication with ground stations

How many satellites will the fully operational Galileo system have in orbit?

• 24 satellites

• 30 satellites

• 27 satellites with 3 spares

• 20 satellites with 5 spares

What additional feature will the subscription version of the Galileo system offer?

• Integration with GLONASS

• Free access to all users

• Real-time weather updates

• Accuracies of 1 meter for professional users

In what way will the Galileo system enhance reliability?

• By using only European satellites

• By providing free services to the public

• By working in conjunction with the GPS system

• By having more satellites than any other system