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Proceedings Paper

Exploitation of a large COSMO-SkyMed interferometric dataset
Author(s): Raffaele Nutricato; Davide O. Nitti; Fabio Bovenga; Alberto Refice; Maria Teresa Chiaradia
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Paper Abstract

In this work we explored a dataset made by more than 100 images acquired by COSMO-SkyMed (CSK) constellation over the Port-au-Prince (Haiti) metropolitan and surrounding areas that were severely hit by the January 12th, 2010 earthquake. The images were acquired along ascending pass by all the four sensors of the constellation with a mean rate of 1 acquisition/week. This consistent CSK dataset was fully exploited by using the Persistent Scatterer Interferometry algorithm SPINUA with the aim of: i) providing a displacement map of the area; ii) assessing the use of CSK and PSI for ground elevation measurements; iii) exploring the CSK satellite orbital tube in terms of both precision and size. In particular, significant subsidence phenomena were detected affecting river deltas and coastal areas of the Port-au-Prince and Carrefour region, as well as very slow slope movements and local ground instabilities. Ground elevation was also measured on PS targets with resolution of 3m. The density of these measurable targets depends on the ground coverage, and reaches values higher than 4000 PS/km2 over urban areas, while it drops over vegetated areas or along slopes affected by layover and shadow. Heights values were compared with LIDAR data at 1m of resolution collected soon after the 2010 earthquake. Furthermore, by using geocoding procedures and the precise LIDAR data as reference, the orbital errors affecting CSK records were investigated. The results are in line with other recent studies.

Paper Details

Date Published: 21 October 2014
PDF: 13 pages
Proc. SPIE 9243, SAR Image Analysis, Modeling, and Techniques XIV, 92430C (21 October 2014); doi: 10.1117/12.2067156
Show Author Affiliations
Raffaele Nutricato, Geophysical Applications Processing S.r.l. (Italy)
Davide O. Nitti, GAP S.r.l. (Italy)
Fabio Bovenga, Consiglio Nazionale delle Ricerche - ISSIA (Italy)
Alberto Refice, CNR ISSIA (Italy)
Maria Teresa Chiaradia, Politecnico di Bari (Italy)

Published in SPIE Proceedings Vol. 9243:
SAR Image Analysis, Modeling, and Techniques XIV
Claudia Notarnicola; Simonetta Paloscia; Nazzareno Pierdicca, Editor(s)

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