Subsidence monitoring using SAR interferometry: Reduction of the atmospheric effects using stochastic filtering

Details Subsidence monitoring using SAR interferometry: Reduction of the atmospheric effects using stochastic filtering Subsidence monitoring using SAR interferometry: Reduction of the atmospheric effects using stochastic filtering

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29i..26c&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 9, pp. 26-1, CiteID 1312, DOI 10.1029/2001GL013544

Physics

Geophysics

4

Geodesy And Gravity: Control Surveys, Exploration Geophysics: Remote Sensing

Scientific paper

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.

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