Phase Shift Correction: Signals Analysis in Frequency Domain

How to find phase shift and do phase shift correction between two signals in frequency domain?

Minnie asked: 2021-12-21 Signal Processing , phase shift , phase shift correc... , signal , digital signal pro...

Master phase shift calculation correction in MATLAB Our guide provides a step-by-step method for precise signal alignment in the frequency domain. Learn m...

Expert Answer

Kshitij Singh answered . 2025-07-06 02:24:10

I had to look up Terahertz time-domain spectroscopy.

You have not provided enough information to provide a specific response. Note that if your signal contains multiple frequencies, as the Wikipedia article appears to indicate, it may not be possible to get all the phase angles to zero.

Since you mentioned analysing your signals in the frequency domain, I assume you are already familiar with the fft (link) function. Use the angle (link) function on the complex output of the fft to get the phase. You can use this utility function to convert angles going from 0 to ±pi to angles going from 0 to 2*pi. That could make the angle comparisons easier:

Angles2pi = @(a) rem(2*pi+a, 2*pi);                      % For ‘atan2’

Also consider using the unwrap function.

If you provide more information, we may be able to provide a more specific response.

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