Proceedings ArticleDOI
Permanent scatterers in SAR interferometry
Alessandro Ferretti,Claudio Prati,Fabio Rocca +2 more
- Vol. 3, pp 1528-1530
TLDR
In this article, the Permanent Scatterers (PS) were used as a "natural GPS network" to monitor terrain motion, analysing the phase history of each one, and results obtained using 34 ERS SAR images gathered over the Italian city of Ancona are presented.Abstract:
Differential SAR interferometry (DInSAR) is an unique tool for low-cost, large-coverage surface deformations monitoring. As well known, the technique involves interferometric phase comparison of SAR images gathered at different times and has the potential to provide millimetric accuracy. Though temporal decorrelation and atmospheric dishomogeneities strongly affect interferogram quality, reliable deformation measurements can be obtained in a multi-image framework on a small subset of image pixels, corresponding to stable areas. These points, hereafter called Permanent Scatterers (PS), can be used as a "natural GPS network" to monitor terrain motion, analysing the phase history of each one. In this paper, results obtained using 34 ERS SAR images gathered over the Italian city of Ancona are presented.read more
Citations
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Journal ArticleDOI
Permanent scatterers in SAR interferometry
TL;DR: The authors present a complete procedure for the identification and exploitation of stable natural reflectors or permanent scatterers (PSs) starting from long temporal series of interferometric SAR images.
Journal ArticleDOI
Atmospheric Phase Screen Compensation in Ground-Based SAR With a Multiple-Regression Model Over Mountainous Regions
Ruben Iglesias,Xavier Fabregas,Albert Aguasca,Jordi J. Mallorqui,Carlos Lopez-Martinez,Josep A. Gili,Jordi Corominas +6 more
TL;DR: The method presented represents an extension of already existing techniques, but now taking into account the effect of steep topography in the atmospheric phase screen compensation process, and is adapted to work with polarimetric SAR data, showing a noticeable improvement in the compensation process.
Journal ArticleDOI
Ground settlement monitoring based on temporarily coherent points between two SAR acquisitions
Lei Zhang,Xiaoli Ding,Zhong Lu +2 more
TL;DR: An InSAR analysis approach for identifying and extracting the temporarily coherent points (TCP) that exist between two SAR acquisitions and for determining motions of the TCP is presented for applications such as ground settlement monitoring.
Proceedings ArticleDOI
High Resolution Interferometric Stacking with TerraSAR-X
TL;DR: Recent processing examples and an update on the interferometric characteristic are presented on the German radar satellite TerraSAR-X.
Journal ArticleDOI
Phase Quality Optimization in Polarimetric Differential SAR Interferometry
Ruben Iglesias,Dani Monells,Xavier Fabregas,Jordi J. Mallorqui,Albert Aguasca,Carlos Lopez-Martinez +5 more
TL;DR: DInSAR processing using polarimetric optimization techniques in the pixel selection process is compared with the classical single-polarimetric approach, achieving a threefold increase of the number of pixel candidates in the coherence case and up to a factor of seven in the amplitude dispersion case.
References
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Journal ArticleDOI
Decorrelation in interferometric radar echoes
Howard A. Zebker,J. Villasenor +1 more
TL;DR: It is found that there is decorrelation increasing with time but that digital terrain model generation remains feasible and such a technique could provide a global digital terrain map.
Journal ArticleDOI
The displacement field of the Landers earthquake mapped by radar interferometry
Didier Massonnet,Marc Rossi,César Carmona,Frédéric Adragna,Gilles Peltzer,Kurt L. Feigl,Thierry Rabaute +6 more
TL;DR: In this article, the authors used Synthetic Aperture Radar (SAR) interferometry to capture the movements produced by the 1992 earthquake in Landers, California, by combining topographic information with SAR images obtained by the ERS-1 satellite before and after the earthquake.
Journal ArticleDOI
Single tone parameter estimation from discrete-time observations
D. Rife,R. Boorstyn +1 more
TL;DR: Estimation of the parameters of a single-frequency complex tone from a finite number of noisy discrete-time observations is discussed and appropriate Cramer-Rao bounds and maximum-likelihood estimation algorithms are derived.