One of the earliest radio navigation systems was Radio Direction Finding (RDF). Introduced in the 1920s, RDF allowed pilots to determine the direction of a ground-based radio transmitter.

Just about every aircraft that has flown over the past 50 years—whether a single-engine Cessna or a 600-seat jumbo jet—is aided by radios to safely land at airports. These instrument landing systems ...

Russia regularly jams GPS signals in northern Scandinavia. The government often “spoofs” receivers in Moscow and elsewhere into thinking they are tens of kilometers from their true location. It is no ...

For the most part, the Radio Apocalypse series has focused on the radio systems developed during the early days of the atomic age to ensure that Armageddon would be as orderly an affair as possible.

The Blacknaute INS enables reliable navigation in GPS-denied environments from a package weighing less than 16 lbs.