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Which of the following is used to distinguish the selected signal and the multipath signal in smart antenna architecture?

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Which of the following is used to distinguish the selected signal and the multipath signal in smart antenna architecture?

(a) DSP procedure

(b) Switched beam array

(c) Range gates

(d) Delay Cancellers

I had been asked this question in examination.

I need to ask this question from Smart Antennas topic in portion Smart Antennas of Antennas

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The correct answer is (a) DSP procedure

Easy explanation: Adaptive array system change the sign patterns with respective to RF settings. DSP procedure is used to differentiate the selected signal from the multipath signals. Switched beam is used for forming multi rays in specific orders. Range gates and delay line cancellers find applications in MTI radars to get the accurate target information.

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