Galileo in tune: first navigation signal transmitted to Earth
Wednesday, December 14, 2011 - 07:00
in Astronomy & Space
(PhysOrg.com) -- Europes Galileo system has passed its latest milestone, transmitting its very first test navigation signal back to Earth. The first two Galileo satellites were launched into orbit on 21 October. Since then their systems have been activated and the satellites placed into their final orbits, positioned so that their navigation antennas are aligned with the world they are designed to serve.Last weekend marked the first orbital transmission from one of these navigation antennas. The stage was set, the singer in place and an audience in the shape of engineers on the ground was waiting eagerly.