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Automatic Computer: In contrast to the GCA urveillance radar, which employs human oper-tors, it uses an automatic computer to track ach returning plane, thereby converting the sarch radar into many different tracking radars, mother automatic computer, called a schedule amputer, calculates the earliest nonconflicting me of arrival for each aircraft, and still anther set of computers, called flight path com-
puters, calculates the path which each plane must fly to arrive at the scheduled time and provides continuous instructions on the required heading and altitude. These instructions are relayed to each aircraft either by human operators over a voice radio or by an automatic radio data link. If the aircraft has an automatic pilot, the signals from the radio data link can be inserted into the automatic pilot system so that the airplane automatically maneuvers onto its required flight path. The Volscan system brings the stream of aircraft under its control into the precision approach landing patterrn of the conventional GCA.
See also AERONAUTICS—5. Aerial Navigation (Radio Navigation) : Ground-Controlled Radar.
The computer commands the missile along t npmed interception path to the aircraft. Thus $ missile-tracking radar performs the measure-vhich is communicated to the computer ; i formulates the commands, which are trans-I to the missile. The commands received by I missile actuate the controls, which in turn r the missile. This is an example of a com-^tely automatic remote-control system.
Potential applications of the computer made possible by microelectronics include a small computer in every home or a pocket computer terminal that can be connected to a powerful central computer via the telephone. Such devices may be used to solve our numerical problems (e.g., income tax, or our bank balance) or as a creative tool to relate our knowledge and experiences to our future actions.
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