Objetivo 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. Programa(s) FP3-ENV 1C - Specific research and technological development programme (EEC) in the field of the environment, 1990-1994 Tema(s) 040102 - Volcanic risk Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Institut de Physique du Globe de Paris Aportación de la UE Sin datos Dirección 4 place Jussieu 75252 Paris Francia Ver en el mapa Coste total Sin datos Participantes (3) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo Centre National d'Etudes Spatiales (CNES) Francia Aportación de la UE Sin datos Dirección 2 place Maurice Quentin 75001 Paris Ver en el mapa Coste total Sin datos POLYTECHNIC OF MILAN Italia Aportación de la UE Sin datos Dirección Piazza Leonardo da Vinci 32 20133 MILANO Ver en el mapa Enlaces Sitio web Opens in new window Coste total Sin datos Universität Stuttgart Alemania Aportación de la UE Sin datos Dirección Keplerstraße 11 70174 Stuttgart Ver en el mapa Coste total Sin datos