I wonder if location could be provided separately (assuming you know where you are) and a rubidium reference would work for clock. Even best GPS receivers have +- 10 ns timing uncertainty, and ...

Diff-e-q The eLoran system gets its enhanced accuracy in much the same way that enhanced GPS gear squeezes greater accuracy out of the civil GPS signal for tasks such as surveying and mapping—by ...

GPS, short for Global Positioning System, is a network of satellites and receiving devices used for positioning, navigation and timing on Earth in everything from ships and planes to cars.

Every day, billions of people use the GPS satellite system to find their way around the world—but GPS signals are vulnerable. Jamming and spoofing attacks can cripple GPS connections entirely or ...

The Global Positioning System runs the modern world. But it is under daily attack. This year alone, researchers say, more than 60,000 commercial flights have been hit by bogus GPS signals, which ...

A total outage of GPS could cost the country at least $1 billion a day. And there's no backup. Russia and China have backups, but the U.S. doesn’t.

GPS, which serves both civilians and the military, relies on a system of 32 satellites that send signals for positioning and timing. The U.S. Space Force, which didn’t exist when GPS was ...

China’s BeiDou has emerged as a formidable alternative to GPS.The Chinese system is provided by 56 satellites, which is nearly double the number providing GPS, and is supported by 120 ground ...