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1. the personnel, radar, computers, etc., on the ground that monitor the progress of aircraft or spacecraft
2. a system for feeding continuous radio messages to an aircraft pilot to enable him to make a blind landing
ground control[′grau̇nd kən‚trōl]
Supervision or direction of all airport surface traffic, except an aircraft landing or taking off.
The marking of survey, triangulation, or other key points or system of points on the earth's surface so that they may be recognized in aerial photographs.
The operating position in the control tower that provides clearances and instructions for the movement of aerodrome ground traffic, and pertinent information to all traffic within the aerodrome perimeter.