A system is disclosed for administering a restricted flight zone using
radar and lasers for detecting, tracking, warning and destroying airborne
craft that enter restricted flight zones without authorization or that
approach dangerously close to protected areas on the ground. The system
comprises a support for positioning adjacent the surface of the Earth at
a bottom of the zone, detecting and defending apparatus mounted on the
support for detecting airborne objects in the zone and defending against
the airborne objects in the zone, and controlling apparatus for
controlling the detecting and defending means.