More accurate than Santa Claus: First Galileo satellite orbit determination with high precision

Every year for Christmas, the North American Air Defence Command NORAD posts an animation on their website, in which the exact flight path of Santa Claus' sled led by reindeer Rudolf is precisely located (http://www.noradsanta.org/en/). The path of navigation satellites, however, has to be determined much more accurately than Santa's flight path, when precise ground positioning is required. GPS is the best known system of this kind, the European system Galileo is planned to be decidedly more accurate.

Read the whole article on Physorg

More from Physorg