Assertion: antenna's beam | /r/HasProperty | swept across the airspace
Facets:
value: in front of the antenna
type: LOCATION
value: horizontally
type: MANNER
Source sentences:
text: An early phased array , the antenna radiated a vertical fan-shaped beam which could be swept horizontally across the airspace in front of the antenna.
text: An early phased array , the antenna radiated a vertical fan-shaped beam which could be swept horizontally across the airspace in front of the antenna.