Control and navigation of aircraft
over land traditionally have relied on ground-based
navigation aids (Navaids). Aircraft must normally
fly from Navaid to Navaid to reach their destination.
Flight paths are rarely direct, penalizing pilot and
passengers with excessive fuel consumption, carbon
emissions, and time spent airborne.
With the advent of GPS, exact
positional information is available to pilots. This
enables direct routes, reduced flight times and reduced
fuel consumption.
