I'm curious if water plays any role in the co-registration process for interferogram creation. Most of my research focuses on coastal zones undergoing subsidence in the United States (Texas, Louisiana Mississippi) and, as a result,large portions of the scene contain water. This doesn't appear to be an issue with Envisat data but ERS2 data I'm beginning to wonder if this could be a problem. The SARscape help says that when it attempts to co-register scenes, it first creates 'mini interferograms' randomly throughout the entire scene and then works from there. If the scene contains large portions of water (in some case as much as 1/3 of the scene is water) and it is not aware that it's trying to co-register a particular area that is water, of course it would fail. Is SARscape intelligent enough to know NOT to attempt co-registration in those areas of a scene that contain water? If it's not, how do we work around this issue?