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secondary radar
commun.	Sekundär-Radar; Ersatzüberwachungsradar n; Sekundärradar n
tech.	sekundaeres Radargeraet
English thesaurus
secondary radar
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: 14 phrases in 4 subjects

Biology	1
Communications	6
Technology	5
Transport	2