Paper SAR doppler tomography model of the pyramid, by prof.Malanga & prof.Biondi, the paper is at <a href="https://www.mdpi.com/2072-4292/14/20/5231" rel="nofollow">https://www.mdpi.com/2072-4292/14/20/5231</a> video at <a href="https://www.youtube.com/watch?v=0r67rS864WU">https://www.youtube.com/watch?v=0r67rS864WU</a>