secondary radar

[′sek·ən‚der·ē ′rā‚där] (electronics) Radar which receives pulses transmitted by an interrogator and makes a return transmission (usually on a different frequency) by its transponder, as opposed to a primary radar which receives pulses returned from illuminated objects.

secondary radar

A radar system wherein a radio signal transmitted from the radar station initiates the transmission of a radio signal from another station (ICAO). Examples of secondary radars are IFF (identification friend or foe) and secondary surveillance radar. See identification friend or foe.

单词	secondary radar
释义	secondary radar secondary radar [′sek·ən‚der·ē ′rā‚där] (electronics) Radar which receives pulses transmitted by an interrogator and makes a return transmission (usually on a different frequency) by its transponder, as opposed to a primary radar which receives pulses returned from illuminated objects. secondary radar A radar system wherein a radio signal transmitted from the radar station initiates the transmission of a radio signal from another station (ICAO). Examples of secondary radars are IFF (identification friend or foe) and secondary surveillance radar. See identification friend or foe.
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