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secondary surveillance radar

commun. radar secundário; radar secundário de vigilância
nat.sc., transp. radar de vigilância secundário
transp., avia. equipamento SSR secundário
 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
: 2 phrases in 1 subject
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