How to find the phase difference between two signals with and without noise?

1. How do you find the phase difference between two signals?
2. What is the formula which can be used for finding phase difference between two signals on CRO?
3. How to calculate phase difference between two signals in Matlab?
4. How do we measure the phase shift between signals?

How do you find the phase difference between two signals?

An oscilloscope's timing markers (Figure 1 ) offer the simplest technique to measure the phase between two signals. The time difference between two corresponding points on the signals represents the phase in units of time. Multiplying the ratio of this value to the period of the signals calculates the phase in degrees.

What is the formula which can be used for finding phase difference between two signals on CRO?

In CRO we can measure the phase difference by X-Y mode operation. At a phase shift ϕ = 0° or 360°, the pattern indicated by CRO is a diagonal straight line making 45° with the X-axis. At a phase shift of ϕ = 90°, the pattern indicated by CRO is a clockwise rotating circle.

How to calculate phase difference between two signals in Matlab?

The present code is a Matlab function that provides a measurement of the phase difference between two signals. The measurement is based on Discrete Fourier Transform (DFT) and Maximum Likelihood (ML) estimation of the signals' initial phases. The method is highly noise resistive.

How do we measure the phase shift between signals?

You can use Fourier block to get amplitude and phase angle of each signal, and by subtracting the phase angles you will get the phase difference between your signals.