Last Friday, 27 March 2015, the European Space Agency's (ESA) seventh and eight Galileo satellite were sent in orbit. They lifted off at 21:46 GMT from Europe’s Spaceport in French Guiana on top of a Souyuz rocket. According to ESA, the mission went as planned and the satellites are already in testing phase.
Europe's Galileo satellite navigation system will soon increase: European Space Agency (ESA) announced the coming launch of Galileo SATs 5-6 on 21 August 2014, from Europe's Spaceport in French Guiana.
These two satellites, becoming operative in autumn, will join the four satellites already orbiting: two were launched in October 2011 and two one year later.
The European satellite navigation mission Galileo marked a new success: On 25 April 2013, all four Galileo satellites started working as clocks accurate to a few billionths of a second, disseminating the exact time through their signals expressed as the UTC Universal Coordinated Time global standard.
India will soon establish its own GPS-like satellite navigation system. According to the newspaper Times of India the first of seven satellites of the Indian Regional Navigation Satellite System (IRNSS) will be launched in June 2013. This system will provide India with its own data for location and time in all weather conditions.
In a recent press release, the European Commission announced that on 12 March 2013 for the first time ever, engineers have been able to determine a position relying only on the signals emitted from four satellites of the European satellite navigation system Galileo.
Satellite navigation systems are based on the highly precise measurement of time. A receiver on the ground pinpoints their positions by calculating how long signals from satellites in orbit take to reach it.
Europe’s third Galileo satellite has transmitted its first test navigation signals back to Earth. The two Galileo satellites launched last October have reached their final orbital position and are in the midst of testing.