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.
随便看	go on the prowl go on the rampage go on the razzle go on the rocks go on the scrounge go on the scrounge for go on the scrounge (for something) go on the scrounge for something go on the sick list go on the stage go on the wagon go on the war path go on the warpath go on tick go on to go onto go on to a better land go on to it go on to (something) go on to something go onto something go on to the offensive go on tour go onward always learning something go on welfare