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| Titel |
3D temporal evolution of displacements through the SISTEM method |
| VerfasserIn |
Francesco Guglielmino, Giuseppe Nunnari, Giuseppe Puglisi, Alessandro Spata |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250040631
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| Zusammenfassung |
| Differential interferometric SAR (DInSAR) is widely used for many ground deformation monitoring applications. However it is affected by two main limitations: temporal decorrelation and atmospheric heterogeneities. In order to overcome these drawbacks several techniques to study the temporal evolution of ground deformation have been developed [1-3]. These techniques provide mono dimensional time evolution of displacement measured along the Line Of Sight (LOS) of the satellite. The aim of this paper is to propose a strategy able to provide 3D temporal evolution of displacements. To this end, for a given multi-temporal dataset of SAR and GPS measurements, the SISTEM (Simultaneous and Integrated Strain Tensor Estimation from geodetic and satellite deformation Measurements) method [4] is used both to filter atmospheric effects (by a new iterative procedure) and to produce 3D ground deformation maps. Then a SBAS-like algorithm is used to “link” these maps and to provide 3D temporal evolution of deformations.
The proposed methodology was tested on both synthetic and experimental data.
References
[1] A. Ferretti, C. Prati, and F. Rocca, “Nonlinear subsidence rate estimation using permanent scatterers in differential SAR interferometry,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 38, No. 5, pp. 2375–2383, 2000.
[2] A. Ferretti, C. Prati, and F. Rocca, “Permanent scatterers in SAR interferometry,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 39, No. 1, pp. 8–20, 2001.
[3] P. Berardino, G. Fornaro, R. Lanari, and E. Sansosti, “A new algorithm for surface deformation monitorino based on small baseline differential interferograms,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 40, No. 11, pp. 2375–2383, 2002.
[4] F. Guglielmino , G. Nunnari, G. Puglisi, A. Spata, (2009), Simultaneous and Integrated Strain Tensor Estimation from geodetic and satellite deformation Measurements (SISTEM) to obtain threedimensional displacements maps. Submitted to IEEE Transactions on Geoscience and Remote Sensing. |
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