Rosa Pacione

On the use of COSMO-SkyMed SAR data and Numerical Weather Models for interferometric DEM generation

The present study is aimed at investigating the potentialities of the COSMO/SkyMed (CSK) constellation for ground elevation measurement with particular attention devoted to the impact of the improved spatial resolution wrt the previous SAR sensors. Assuming no movement and successful orbital error removal, the main problem in height computation through InSAR techniques derives from the interferometric phase artifacts related to the interaction between microwave and the lower layers of the atmosphere (APS, Atmospheric Phase Screen). Different strategies can be adopted to filter out this signal, ranging from the exploitation of the well-known spatial and temporal statistics of the APS to the estimation of independent APS measurements through Numerical Weather Prediction (NWP) models. Their feasibility and the achievable accuracies are discussed here.

Height Time Series of the Italian GPS Fiducial Network compared with VLBI and SLR Estimations

In this work, we present the results of the determinations of vertical motions obtained from the analysis of data coming from different space geodetic techniques, Global Positioning System (GPS), Satellite Laser Ranging (SLR), Very Long Baseline Interferometry (VLBI). All the geodetic solutions have been computed at the Centre of Space Geodesy (CGS) at Matera.