Controller interface for controller-pilot data link communications

The controller interface was designed to generate air traffic controller messages per RTCA DO-219 for Controller-Pilot data link communications (CPDLC). The controller interface is part of the low visibility landing and surface operations (LVLASO) project being researched by NASA's Langley and Ames Research Centers. The messages implemented in the controller interface were tailored for the ground controller to handle airport surface traffic. Of primary concern were messages related to taxi routes and hold short instructions. These messages drive the moving map display in the NASA 757 research aircraft. The controller interface, using voice recognition and a touch screen for controller input, was tested at Atlanta Hartsfield Airport in August 1997.