BEGIN:VCALENDAR VERSION:2.0 PRODID:-//pretalx//talks.osgeo.org//WGCXK3 BEGIN:VTIMEZONE TZID:GMT BEGIN:STANDARD DTSTART:20001029T030000 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10 TZNAME:GMT TZOFFSETFROM:+0100 TZOFFSETTO:+0000 END:STANDARD BEGIN:DAYLIGHT DTSTART:20000326T020000 RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3 TZNAME:BST TZOFFSETFROM:+0000 TZOFFSETTO:+0100 END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:pretalx-foss4g-it-2023-WGCXK3@talks.osgeo.org DTSTART;TZID=GMT:20230613T144500 DTEND;TZID=GMT:20230613T150000 DESCRIPTION:The increasing availability of synthetic aperture radar (SAR) s atellite imagery has opened up new opportunities for operational support t o predictive maintenance and emergency response. The first step in any eme rgency response is to assess the extent and the impact of the damage cause d by the disaster. First responders need to recognize and to collect usefu l\ninformation to mount their rescue operation effectively and quickly. Th ere is indeed a strong link between timely rescue operations and the perce ntage of survived victims from natural disasters. \nTherefore\, it is extr emely important to ensure effective deployment of rescue teams as soon as possible by means of the optimization of resources\, accurate information on how to access and to settle in the affected areas\, and the definition of operational priorities. To further optimize the activity on the field\, it is possible to use the potential of SAR satellite analysis.\nToday\, s everal satellite SAR missions are available\, characterized by different t echnical features in terms of wavelengths\, and temporal and geometric res olutions\nThe COSMO-SkyMed constellation initially consisted of four ident ical satellites\, each equipped with high-resolution microwave SAR operati ng in the X-band and positioned in a sun-synchronous orbit ~620 km above t he Earth's surface. Subsequently\, the four First Generation satellites we re joined by two further Second Generation COSMO-SkyMed satellites\, also based on identical satellites equipped with X-band SAR payloads and positi oned on the same orbital plane as the First Generation satellites. Current ly 5 COSMO-SkyMed satellites are operational\, 3 of the first generation a nd 2 of the second generation. 2 more will be launched in the coming years .\nIn 2018\, the Italian Space Agency (ASI) and the Italian National Fire and Rescue Service (CNVVF) signed an agreement to approve the collaboratio n between the two State Administrations. The aims of the Agreement are lin ked to the use of technologies that use satellite data to support urgent t echnical rescue\, a fundamental mission of firefighters.\nUnder the agreem ent\, in the event of medium and large-scale emergencies\, ASI makes radar -type satellite products available to the CNVVF. Through the use of these data we want to facilitate an initial assessment of the affected area\, a few hours after the event\, with the delimitation of the most critical are as\, in order to optimize the operational response. Thanks to the COSMO-Sk yMed products made available by ASI\, are developed by the cartographic o ffice of the National Corps (the TAS Central Service) products in order to support the territorial VVF offices in the planning phase and monitoring of interventions.\nWith the aim of investigating the performance of SAR im ages characterized by different geometric resolutions for the detection an d mapping of post-earthquake damages\, three SAR image datasets (Sentinel- 1\, COSMO-SkyMed Spotlight and COSMO-SkyMed StripMap) were analyzed availa ble in Norcia (Central Italy) in the areas that were severely affected by the strong seismic sequence in 2016. We compared pairs of images with equi valent characteristics collected before and after the principal seismic ev ent on October 30\, 2016 (at 06:00:40\, UTC). The results were compared wi th each other and then measured against the results of the post-earthquake field surveys for damage assessment\, carried out by the CNVVF. Thanks to the interesting and opportunity to have COSMO-SkyMed Spotlight images bef ore the event\, we have determined that the nominal geometric resolutions 1x1-m can provide a very detailed damage mapping of a single building\, wh ile the COSMO-SkyMed StripMap HIMAGE at 3x3 resolutions they give relative ly good detections of damaged buildings. As reliable given the different s patial resolution of the Interferometric Wide Swath mode\, the Sentinel-1 images did not allow acquiring information on individual buildings\, but s imply provided approximate identifications of the most severely damaged se ctors. The main results of the performance investigation that have been ca rried out in this work can be exploited considering the exponential growth of the satellite market in terms of revisit time and image resolution.\n\ nMazzanti P.\, Scancella S.\, Virelli M.\, Frittelli S.\, Nocente V.\, Lom bardo F\, Assessing the performance of multi-resolution satellite SAR. ima ges for post-earthquake damages detection and mapping. Remote Sensing of E nvironment. DTSTAMP:20260316T152110Z LOCATION:Sala Videoconferenza @ PoliBa SUMMARY:Assessment of the use of SAR satellite images for detection and map ping of post-earthquake damages\, for purposes of emergency response manag ement - Maria Virelli\, Valentina Nocente\, Federico Lombardo\, Stefano Fr ittelli URL:https://talks.osgeo.org/foss4g-it-2023/talk/WGCXK3/ END:VEVENT END:VCALENDAR