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secondary radar

airports вторинний радіолокатор
avia. вторинна радіолокація; вторинний радар
commun. вторинна РЛС
 English thesaurus
secondary radar
avia. A radar system wherein a radio signal transmitted from the radar station initiates the transmission of a radio signal from another station.
avia., Canada A radar system that requires complementary aircraft equipment transponder. The transponder generates a coded reply signal in response to transmissions from the ground station interrogator. Since this system relies on transponder-generated signals rather than signals reflected from the aircraft, as in primary surveillance radar, it offers significant operational advantages such as increased range and positive identification.
secondary radar
: 6 phrases in 3 subjects
Airports and air traffic control2
Aviation2
Military2