Persistent scatterer pairs (PSP) technique and high resolution SAR interferometry in urban areas

We have recently proposed a new approach, named persistent scatterer pairs (PSP), for the identification and the analysis of persistent scatterers in series of full resolution SAR images. In this technique, atmosphere phase artefacts are effectively eliminated by exploiting their spatial correlation, but without using model based interpolations to remove orbital and atmospheric phase artefacts. This approach allows efficiently identify the persistent scatterers, and to retrieve the corresponding terrain height and displacement velocity.