Assertion: radar's beam | /r/CapableOf | detect higher elevation aircraft
Facets:
value: with less ground clutter
type: OTHER
value: closer
type: LOCATION
Source sentences:
text: The antenna covers an elevation of 40° from the horizon with two feedhorns which create two stacked overlapping vertical lobes 4° apart; the lower beam transmits the outgoing pulse and is used to detect distant targets near the horizon, while the upper receive-only beam detects closer higher elevation aircraft with less ground clutter.