Why not the far field calculation does not work in Frequency-Domain, Perturbation ?

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Vikash Pandey

Far field calculation basically relates to phase delay between the waveforms. And time-shift in space corresponds to phase shift in Fourier-frequency domain. The amplitude spectrum remains unchanged!

Chunying Wang

Hi, Vikash, could you give more details about why far field not work, I am not very clear about that, Thank you!

Read about time-shift property of Fourier transform.