how transform excel data (freq, angle, power) to (time, angle, power) ? is it using inverse FFT ? please explain to me, thanks

Answer 1

[dpb]

If that's all the info you have, you can't--you don't have any phase information left that would need to regenerate a time history. If the original data aren't available, you're kinda' sunk methinks.

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i have read a paper, and the paper explain like that, i follow step of the paper but my out, it doesn't look like the paper