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| Titel |
Non-interferometric GB-SAR measurement: application to the Vallcebre landslide (eastern Pyrenees, Spain) |
| VerfasserIn |
O. Monserrat, J. Moya, G. Luzi, M. Crosetto, J. A. Gili, J. Corominas |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 7 ; Nr. 13, no. 7 (2013-07-29), S.1873-1887 |
| Datensatznummer |
250018560
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| Publikation (Nr.) |
 copernicus.org/nhess-13-1873-2013.pdf |
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| Zusammenfassung |
| In the last decade, ground-based interferometry has proven to be a powerful
technique for continuous deformation monitoring of landslides, glaciers,
volcanoes, or manmade structures, among others. However, several limitations
need to be addressed in order to improve the performances of the technique,
especially for long-term monitoring. These limitations include the reduction
of measurable points with an increase in the period of observation, the
ambiguous nature of the phase measurements, and the influence of the
atmospheric phase component. In this paper, a new procedure to process the
amplitude component of ground-based synthetic aperture radar (GB-SAR) data
acquired in discontinuous mode is compared and validated. The use of
geometric features of the amplitude images combined with a matching technique
will allow the estimation of the displacements over specific targets.
Experimental results obtained during 19 months, in eight different campaigns
carried out in the active landslide of Vallcebre (eastern Pyrenees, Spain),
were analysed. During the observed period, from February 2010 to September
2011, displacements up to 80 cm were measured. The comparison with
other surveying technique shows that the precision of the method is below
1 cm. |
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