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The ESA radar beam can be repositioned in a few _______

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The ESA radar beam can be repositioned in a few _______

(a) Microseconds

(b) Nanoseconds

(c) Milliseconds

(d) Seconds

This question was posed to me in an online interview.

This key question is from Electronic Scanned Array Radar in chapter Surveillance Systems, Mapping and Multimode Radars of Avionics

1 Answer

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Best answer
The correct answer is (a) Microseconds

The best I can explain: Since the antenna’s phase shifter settings can be changed in a few microseconds, an ESA’s beam can be repositioned almost instantly.

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