SAR Focusing

Here’s an example of how the along track resolution can be improved using a phase-coherent radar. The coherent integration improves the along-track resolution, apparent by comparing the incoherent profile (left) and the coherent profile (right). Distinct scattering centers are apparent in the coherent profile, whereas diffraction hyperbolae are apparent in the incoherent profile. Seismic migration techniques would usually be applied to remove these hyperbolic tails.