Europe’s Galileo satellite navigation system has entered its initial operational phase, offering positioning, velocity and timing services to suitably equipped users worldwide. It takes a minimum of four Galileo satellites to be visible in the local sky to fix a receiver’s position. This animation shows how service availability increases as the overall number of satellites in the Galileo constellation goes up.
Read more about Galileo Initial Services:
http://www.esa.int/Our_Activities/Navigation/Galileo_begins_serving_the_globe
