why the phase obtained with Hilbert transform and phase unwrap is different from the actual phase?

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Hui Sun 2016-7-14

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回答： Matt Gaidica 2022-3-31

I am trying to get the phase of the time signal with Hilbert transform and phase unwrap,

timesignal=cos(phase);

H=hilbert(timesignal);

p=unwrap(angle(H));

why is the unwrapped phase progressive increase， why is it different from the actual phase?

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Vitor Garcia 2017-6-2

Hey! Could find the solution for your problem? I have the same question...

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Matt Gaidica 2022-3-31

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Because you unwrapped it.

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Signal Processing Signal Processing Toolbox Transforms, Correlation, and Modeling Transforms Hilbert and Walsh-Hadamard Transforms

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