Aerial navigation and traffic control with Navaglobe, Navar, Navaglide and Navascreen

The Navaglobe system of long-range navigation uses a world-wide network of l.f. continuous wave transmitters providing signals which automatically control azimuth instruments enabling pilots to determine their positions. Navar is an application of radar and airborne responder beacons providing ground surveillance as well as distance and azimuth indications in the cockpit; Navaglide is a microwave system for instrument-controlled landing and automatic landing. The Navascreen system integrates all available information concerning aircraft positions and movements into a large-scale clearly readable display.