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

被引:41
作者
Crosetto, M
Tscherning, CC
Crippa, B
Castillo, M
机构
[1] Inst Geomat, Barcelona 08038, Spain
[2] Univ Copenhagen, Dept Geophys, DK-2100 Copenhagen, Denmark
[3] Univ Milan, Dept Earth Sci, I-20129 Milan, Italy
[4] Inst Cartog Catalunya, Barcelona 08038, Spain
关键词
D O I
10.1029/2001GL013544
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
[1] 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.
引用
收藏
页码:26 / 27
页数:4
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