Word: gila
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Dates: during 1960-1969
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...across the width of the U.S. Designed by the Naval Research Laboratory to keep track of satellites whose radios are silent, it is a notable improvement on other radars, which have difficulty finding a small satellite unless they know where to look. Big, 50-kw. transmitters were established at Gila River, near Phoenix, Ariz, and Jordan Lake, Ala., spraying radio waves upward in the shape of open fans. Some 250 miles on either side, receiving stations pick up signals that bounce off any object passing through the fans. By a kind of triangulation, the operators can make rough estimates...