I am using acoustic waves to measure the thickness of material. My problem is that the acoustical lens produces static echos in the signal. I try to separate both because there is a short interference between both.
The frequency of the material echo and the static echo has nearly the same frequency. So spectral subtraction is not a valid method to separate the signals.
I will try the following: The first measurement is without any object. So I am able to measure the static echo of the acoustic system. The second measurement I collect the signal with the object to measure.
My idea: So I got two signals from different signal sources. Maybe I can separate both with Independent Component Analysis (ICA).
Do you think that this solution will work? Or is there a better method to separate static and echo signals (with noise) out the measured data.
Thanks for your help.