Abstract
Abstract. Sentinel-1A was launched in April 2014, and has been collecting data routinely over more than one year. Sentinel-1B is set for launch on 22 April 2016. The Sentinel-1 constellation has several advantages over previous radar missions for InSAR applications: (1) Data are being acquired systematically for tectonic and volcanic areas, (2) Images cover a wide footprint, 250 km from near to far range in Interferometric Wide Swath (TOPS) mode, (3) Small perpendicular and temporal baselines greatly improve interferometric coherence at C-band, (4) Data are freely available to all users, (5) The mission is planned to be operational for 20 years, with 1C and 1D planned for future launches. These features enable us to map geological processes occurring in any place at anytime using InSAR. We will review progress within COMET towards our ultimate goal of building a fully-automated processing system that provides deformation results and derived products to the wide InSAR and Geophysics communities. In addition to high-resolution-ECMWFbased atmospheric correction model, we will show results of a systematic analysis of interferometric coherence in tectonic and volcanic areas, and discuss the future goals and timeline for the COMET InSAR automated processing system.
Highlights
Sentinel-1A was launched in April 2014 and its data have been widely exploited for a range of applications including the monitoring of land surface movements due to geohazards, mapping of ice-sheet, surveillance of marine environments, and mapping for agriculture, forest, water and soil management
The use of HRES ECMWF products, which are available near real-time, provides a unique contribution to COMET objectives of near-real time InSAR processing chain and quick responses to geohazards
Results from the COMET processing chain would exploit routinely the redundancy of measurements in the burst overlap regions. This feature highlights the potential of Sentinel-1 Terrain Observation with Progressive Scans (TOPS) interferometry for studies of Earth processes associated with natural hazards
Summary
Sentinel-1A was launched in April 2014 and its data have been widely exploited for a range of applications including the monitoring of land surface movements due to geohazards, mapping of ice-sheet, surveillance of marine environments (oilspill and ship detection), and mapping for agriculture, forest, water and soil management. Sentinel-1B is set for launch on 22 April 2016. Its all-weather, dayor-night capability, together the wide swath of 250 km in the Interferometric Wide Swath mode, make itself suitable for monitoring geohazards such as earthquakes, volcanoes and landslides. The shorter repeat time, more regular acquisitions and tighter orbital control for Sentinel-1 radically improve the coherence of interferograms relative to previous ERS-1/2 and Envisat missions and allow interferometric processing and time series analysis to be automated
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