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secondary surveillance radar
biol.	Sekundär-Überwachungsradar
commun.	Sekundärüberwachungsradar n (SSR); Ersatzüberwachungsradar n; Sekundär-Radar; Sekundärradar n
transp., avia.	Sekundärradar-Antwortgerät n
English thesaurus
secondary surveillance 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 surveillance radar: 1 phrase in 1 subject

Transport

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