Assertion: radar | /r/HasProperty | active sensor
Facets:
value: for locating targets
type: PURPOSE
Source sentences:
text: Radar ( for "RAdio Detection And Ranging"), is a radio sensor, generally (but not always) operating in the microwave frequency range (> 1 GHz), and is an ACTIVE sensor.
text: Radar is an “active” sensing device in that it has its own source of illumination (a transmitter) for locating targets.