Assertion: radar's antenna | /r/ObjectUse | used in an air defense system
Facets:
Source sentences:
text: Alternatively, a physical antenna, used in an air defense system, may be "time-shared", with the main search radar (e.g., the AN/SPY-1 on AEGIS air defense ships) cueing the tracking radar (e.g., the AN/SPG-62 on AEGIS ships) to illuminate the target, only when the missile needs continuous information for the final stage of its attack.