Objective The development of a method to map small deformations of theground down to the centimeter level, using differential SARinterferometry.A method to map small deformations is being developed, using SARimage triplets and interferograms. Four test sites have beenselected. The area of Bonn, the Phlegreians fields near Naples,St. Etienne de Tinee near Nice, Mount Etna in Sicily.ERS-1 SAR images will be processed in parallel, so that theperformance of different processor and different techniques ofinterferometry and differential interferometry can be evaluated.The corner reflectors will be fixed at selected positions andwill stay there for the whole period of the study. They will beorientated towards the ERS-1-look direction. They will be usedto estimate the amplitude of the effects, which in practice limitthe accuracy of the technique. These effects are the loss ofcoherence of the scatterers and the effects of meteorologicalconditions.All positions of point targets will be measured very precisely in3 dimensions as a function of time with geodetic accuracy makinguse of GPS receivers. In addition existing geodetic data,geophysical, geological and meteorological data will be collectedfor all studied site and digitized to allow direct comparisonwith SAR products.Finally the stability of the SAR system parameters will beanalyzed and the quality of the results achieved including thenegative ones as well, will be discussed.The products availaible in the end of the work will be: Allimages processed on the test sites during the work. Filmproducts associated with the images processed. Geometricdistorsion maps between images. Plots of the noise assessment inthe images. Coherence images. Small elevation changes mapsderived from interferograms and geodetic measurements. Programme(s) FP3-ENV 1C - Specific research and technological development programme (EEC) in the field of the environment, 1990-1994 Topic(s) 040102 - Volcanic risk Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator Institut de Physique du Globe de Paris EU contribution No data Address 4 place Jussieu 75252 Paris France See on map Total cost No data Participants (3) Sort alphabetically Sort by EU Contribution Expand all Collapse all Centre National d'Etudes Spatiales (CNES) France EU contribution No data Address 2 place Maurice Quentin 75001 Paris See on map Total cost No data POLYTECHNIC OF MILAN Italy EU contribution No data Address Piazza Leonardo da Vinci 32 20133 MILANO See on map Links Website Opens in new window Total cost No data Universität Stuttgart Germany EU contribution No data Address Keplerstraße 11 70174 Stuttgart See on map Total cost No data