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Ships also have radar and sonar, however only certain ships have sonar.
en.wikipedia.org During the 1970s, radars began to be standardized and organized into networks.
en.wikipedia.org Truck-mounted radar was used to track approaching target aircraft.
en.wikipedia.org Simple nets are less effective in defeating radar and thermal sensors.
en.wikipedia.org It is guided inertially in mid-flight and turns on active radar late in its flight to find and hit its target.
en.wikipedia.org