How to compute phase velocity and wavelength of signal

조회 수: 28(최근 30일)
vu ngothanh
vu ngothanh 2015년 9월 3일
답변: AHMED ASEEM 2019년 5월 30일
Dear all,
I have a matrix which contain 3 columns: time and amplitude of 2 acceleration. These value is get from acceleration when hitting into the ground. I need to compute phase velocity and wavelength from them. BUt i do not have any idea to get it. I had seached from internet, someone say that using FFT is ok, however, from fft I just know how to get phase angle, and I stuck in there. My way is wrong, isn't it?
Could you please to help me to compute it.
Thank you very much.

답변(1개)

AHMED ASEEM
AHMED ASEEM 2019년 5월 30일
Hi ngotha,
I guess you might have to use this formulae. I am also looking for phase velocity of signal. I hope you've found your answer by now;
Cp = -w(delat d)/[(phase angle 1(w) - phase angle 2(w)]
delta d = distance between two points along the signal direction on which phase angle is measured
w = angular frequency
Cp= phase velocity
How was you manage to get phase angle ?

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