Interferometric COSMO-SkyMed Spotlight DEM generation

The generation of Interferometric Spotlight DEMs is investigated, using the processing chain included in the Delft Object-oriented Radar Interferometric Software (DORIS [1]). The effects of not correctly handled Doppler drift is shown. The standard interferometric processing, without Doppler drift handling, has been applied to Spotlight image pairs, showing the interferometric coherence loss occurring as we move away from scene center. Then, the proper interferometric processing for Spotlight data has been applied obtaining very high resolution and accuracy DEMs. Some Spotlight image pairs have been processed and the obtained DEMs have been shown and analyzed proving the high details and product accuracy.