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Radar System Engineering

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242 THE EMPLOYMENT OF RADAR DATA [SEC.7.8<br />

appears bright when the beacon is being interrogated. Since the beacon<br />

is interrogated on!y when the radar is pointing atit, the bright line passes<br />

through the signal pip representing the individual plane carrying the<br />

equipment.. Each pilot sees a different radial line indicating his own<br />

plane.<br />

FIG. 718.—Schematic drawing of Teleran rmesentationin an aircraft flying at 11,000ft.<br />

The Teleran system has been worked out in much more detail than<br />

can be described here. Enough has been saiclto indicate the fashion in<br />

which system planning, based always on the needs of the user, leads to a<br />

functionally simple but technically elaborate final result, embodying not<br />

only radar but also beacons, television, aircraft instruments, and always—<br />

inescapabley—men.

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