> Dear all,
>
>I am working on the PSD estimation of a topographic depth profile.
>The problem that I am facing is that to convert the frequency scale
>to wavenumber scale which is considered more suitable.
>
>I am using Welch method which gives me absolute power w.r.t
>frequency in radians. Here I am considering that the samples are
>spaced by distance (50 meters) hence frequency is in radians/meter
>(correct if i am mistaken).
>
>Now I need to represent the X axis in terms of wavenumber and not
>frequency. Generally K=2*pi/lambda. where lambda=C/freq.
>C is the speed of wave.
>But in my case profile is that of land, which has no speed.
>
>help me get out of this problem.
>
>Thanking you.
>
>Vasu
>
I hope its not late to answer this after 5 years:-)
Use a radon transform to calculate speed of waves first, then go on to compute
freq by wavenumber.
Cheers
Blue
