Europe’s satellite navigation system Galileo is already in use worldwide, usable by itself or in combination with the U.S. GPS. Now a combined Galileo–GPS positioning fix has been achieved in space — ...

Finding GPS unreliable in certain situations, the U.S. government is placing a high priority on developing a more reliable real-time position tracking technology whose signals won’t disappear in blind ...

ARE WE THERE? In a multi-GNSS world, that is. We’ve asked that question from time to time in this column over the years. So, are we there yet? That depends. One definition of “multi” is more than one.

Also referred to as Navstar, GPS has been in operation since the early 1990s. It proved invaluable initially in the Gulf War and in all military endeavors since then many times over. Not only that, ...

Finding GPS unreliable in certain situations, the U.S. government is placing a high priority on developing a more reliable real-time position tracking technology whose signals won’t disappear in blind ...