Radar interferogram filtering for geophysical applications
TLDR
In this paper, a new adaptive filtering algorithm was proposed to dramatically lower phase noise, improving both measurement accuracy and phase unwrapping, while demonstrating graceful degradation in regions of pure noise.Abstract:
The use of SAR interferometry is often impeded by decorrelation from thermal noise, temporal change, and baseline geometry. Power spectra of interferograms are typically the sum of a narrow-band component combined with broad-band noise. We describe a new adaptive filtering algorithm that dramatically lowers phase noise, improving both measurement accuracy and phase unwrapping, while demonstrating graceful degradation in regions of pure noise. The performance of the filter is demonstrated with SAR data from the ERS satellites over the Jakobshavns glacier of Greenland.read more
Citations
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Journal ArticleDOI
Synthetic aperture radar interferometry
Paul A. Rosen,S. Hensley,Ian Joughin,F.K. Li,Soren N. Madsen,Ernesto Rodriguez,Richard M. Goldstein +6 more
TL;DR: In this paper, the authors present a review of the techniques of interferometry, systems and limitations, and applications in a rapidly growing area of science and engineering, including cartography, geodesy, land cover characterization, and natural hazards.
Journal ArticleDOI
A multi-temporal InSAR method incorporating both persistent scatterer and small baseline approaches
Andrew Hooper,Andrew Hooper +1 more
TL;DR: A new method is presented that combines both approaches, to extract the deformation signal at more points and with higher overall signal-to-noise ratio than can either approach alone.
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Persistent scatterer interferometric synthetic aperture radar for crustal deformation analysis, with application to Volcán Alcedo, Galápagos
TL;DR: In this paper, the spatial correlation of interferogram phase was used to find pixels with low-phase variance in all terrains, with or without buildings, for persistent scatterer (PS) analysis.
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Recent advances in SAR interferometry time series analysis for measuring crustal deformation
TL;DR: In this paper, a review of recent advances in time series SAR interferometry methods that further improve accuracy is presented, including improved algorithms applied to image deformation associated with the 2010 eruption of Eyjafjallajokull volcano, slow slip on the Guerrero subduction zone in Mexico, and tectonic deformation in western Anatolia, Turkey.
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Time-dependent land uplift and subsidence in the Santa Clara valley, California, from a large interferometric synthetic aperture radar data set
TL;DR: In this paper, the authors invert 115 differential interferograms derived from 47 synthetic aperture radar (SAR) scenes for a time-dependent deformation signal in the Santa Clara valley, California.
References
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Journal ArticleDOI
Satellite radar interferometry: Two-dimensional phase unwrapping
TL;DR: In this paper, an approach to 'unwrapping' the 2 pi ambiguities in the two-dimensional data set is presented, where it is found that noise and geometrical radar layover corrupt measurements locally, and these local errors can propagate to form global phase errors that affect the entire image.
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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.
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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
Mapping small elevation changes over large areas: Differential radar interferometry
TL;DR: In this article, a technique based on synthetic aperture radar (SAR) interferometry is described, which uses SAR images for measuring very small (1 cm or less) surface motions with good resolution (10 m) over swaths of up to 50 km.
Journal ArticleDOI
Satellite Radar Interferometry for Monitoring Ice Sheet Motion: Application to an Antarctic Ice Stream
TL;DR: The combined use of SRI and other satellite methods is expected to provide data that will enhance the understanding of ice stream mechanics and help make possible the prediction of ice sheet behavior.
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