Advanced InSAR techniques for deformation studies and for simulating the PS-assisted calibration procedure of Sentinel-1 data: case study from Thessaloniki (Greece), based on the Envisat/ASAR archive
| Autor: | Fabiano Costantini, Giovanni Schiavon, Francesco Sarti, Antonios Mouratidis |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Synthetic aperture radar
010504 meteorology & atmospheric sciences GNSS augmentation Calibration (statistics) Perspective (graphical) 0211 other engineering and technologies Subsidence Settore ING-INF/02 - Campi Elettromagnetici 02 engineering and technology Deformation (meteorology) Geodesy 01 natural sciences On board Interferometric synthetic aperture radar General Earth and Planetary Sciences Geology 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing |
| Popis: | Using state-of-the-art InSAR techniques, namely persistent scatterers PSs and small baseline subset SBAS approaches, this study contributes to open geotechnical questions in the area of Thessaloniki Greece from a remote-sensing perspective. It also demonstrates the potential of these techniques for calibration purposes, with reference to the new C-band synthetic aperture radar SAR sensor on board the Sentinel-1 mission satellites. By exploiting the historical archive of Envisat/ASAR data, as well as a pair of the first Sentinel-1A SAR images, recent 2004–2010 deformation rates up to 18 mm year–1 are detected over the study area. These results are then compared to the findings of previous InSAR and geophysical observations, indicating for example, subsidence or tectonic activity. On the other hand, the usefulness of the PS technique is shown over the same region for external SAR calibration purposes. This process simulates the PS-assisted calibration procedure to be applied systematically to Sentinel-1 SAR products. |
| Databáze: | OpenAIRE |
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