[Scilab-users] FFT - upward continuation of a 2D grid

[Rafael Guerra]

One additional remark.
Fftshift might have been misused. Try instead:

   fft_clean=clean(fft2(Boug_corr)); // merge commands
   k= fftshift(k);
   Fup=fft_clean.*exp(-k*uc);

Regards,
Rafael

-----Original Message-----
From: users <users-bounces at lists.scilab.org> On Behalf Of Rafael Guerra
Sent: Saturday, July 28, 2018 2:44 PM
To: Users mailing list for Scilab <users at lists.scilab.org>
Subject: Re: [Scilab-users] FFT - upward continuation of a 2D grid

Hi Lester,

The spatial resolution of 0.016 m seems unrealistically too-finely sampled... Could you confirm the units?
Also, it is possible that your upward continuation requires an angular wavenumber:   exp(-2*%pi*k*uc) ?

Regards,
Rafael