Optimizing interferogram generation, pixel selection and data processing for high non-linear deformation monitoring with Orbital DInSAR

A necessary step for every DInSAR technique is to properly select the data from which deformation information will be calculated. Two main processes must be done in this sense, the interferogram set creation and the quality pixel selection. In this paper we will present advances concerning both issues: a new method for selecting a high quality and reduced interferogram set solving an equivalent minimum spanning tree system and a pixel selection criterion based in region growing type algorithms. Furthermore, in order to avoid errors when dealing with highly non-linear deformation patterns, a temporal block differential processing is proposed.