Signal Processing, Spectral Analysis, Ante, Linear Algebra, Eigenvectors.
time domain is equivalent to a convolution in frequency domain, we can write (17) as [14]: Equation 19 Where Φ(k) is the Fourier transform of the window. We can then relate the windowed and sampled signal from (19) with the original wavefield using (14) so that [14]: Equation 20 4. Spatial