The atmospheric effects represent one of the major limits of SAR interferometry as a quantitative technique to monitor subsidences. In this work, which focuses on subsidences of small spatial extent, a procedure to reduce these effects is described. The atmospheric component of the interferometric phase is estimated adopting a filtering and prediction procedure, which exploits the phase over stable areas identified in the vicinity of the analysed subsidence area. The procedure was validated on a suitable test site located in North-eastern Spain. Furthermore, it was employed in the study of a small-scale subsidence, where the interferometric results were validated using precise geodetic observations.
Subsidence monitoring using SAR interferometry: Reduction of the atmospheric effects using stochastic filtering / M. Crosetto, C.C. Tscherning, B. Crippa, M. Castillo. - In: GEOPHYSICAL RESEARCH LETTERS. - ISSN 0094-8276. - 29:9(2002), pp. 26-1-26-4. [10.1029/2001GL013544]
Subsidence monitoring using SAR interferometry: Reduction of the atmospheric effects using stochastic filtering
B. Crippa;
2002
Abstract
The atmospheric effects represent one of the major limits of SAR interferometry as a quantitative technique to monitor subsidences. In this work, which focuses on subsidences of small spatial extent, a procedure to reduce these effects is described. The atmospheric component of the interferometric phase is estimated adopting a filtering and prediction procedure, which exploits the phase over stable areas identified in the vicinity of the analysed subsidence area. The procedure was validated on a suitable test site located in North-eastern Spain. Furthermore, it was employed in the study of a small-scale subsidence, where the interferometric results were validated using precise geodetic observations.File | Dimensione | Formato | |
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