Which of the following is false with respect to secondary radar?(a) Requires more power than primary radar(b) Needs a transponder device on the aircraft(c) IFF(d) Better rangeThe question was asked in an interview for job.I want to ask this question from Primary and Secondary Radar in portion Surveillance Systems, Mapping and Multimode Radars of Avionics

Which of the following is false with respect to secondary radar?(a) Re

1.	Which of the following is false with respect to secondary radar?(a) Requires more power than primary radar(b) Needs a transponder device on the aircraft(c) IFF(d) Better rangeThe question was asked in an interview for job.I want to ask this question from Primary and Secondary Radar in portion Surveillance Systems, Mapping and Multimode Radars of Avionics
Answer» Right choice is (a) Requires more power than primary radar To explain: Secondary radar requires LESS power than primary radar for the same amount of coverage area. This is because in secondary radar the pulse is one way; it triggers a REPLY pulse in the transponder of the AIRCRAFT which replies with some of the important flight PARAMETERS of the aircraft.

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