A Least Squares Adjustment of Multi-temporal InSAR Data

Mouëlic, Stéphane Le; Raucoules, Daniel; Carnec, C.; King, Christine

doi:10.14358/pers.71.2.197

Cited by 34 publications

(15 citation statements)

References 17 publications

(27 reference statements)

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“…Suppose that the interferograms are independent, so that once the rate maps are stacked this inaccuracy is reduced by a factor of 1/√N (e.g. Le Mouélic et al 2005); the final precision should therefore be approximately 5 cm year −1 with 1 year of acquisitions. Supposing further that all the interferograms are linked (i.e.…”

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confidence: 99%

Potential of diffuse scatterer interferometry for monitoring CO₂ storage sites in European contexts (land cover types)

Raucoules

Raffard

Rohmer

et al. 2015

International Journal of Remote Sensing

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This article proposes to test the feasibility of long-term surface deformation monitoring based on synthetic aperture radar (SAR) interferometry on carbon dioxide (CO 2 ) storage sites with land cover representative of potential European injection sites (agricultural or forests with minimum built-up land cover). Because no operational injection site is currently active in Europe, a SAR data set (based on EnviSAT-ASAR spaceborne data) is simulated by combining SAR scenes acquired over a potential future European injection site with deformation measurements from SAR analysis carried out on the In-Salah (Algeria) CO 2 injection demonstrator site. The study shows that under such conditions, both persistent scatterer interferometry (PSI) and diffuse scatterer (DS) interferometry appear insufficient to provide a sufficiently dense measurement network to characterize surface deformation correctly. Alternative solutions, to be investigated in further studies, include the use of data archives with shorter acquisition time spans (e.g. Sentinel-1 data when available) or installation of corner reflectors. The cost of the latter mixed space/ground solution must be evaluated with respect to conventional ground-based measurement methods in the proposed context.

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confidence: 99%

Potential of diffuse scatterer interferometry for monitoring CO₂ storage sites in European contexts (land cover types)

Raucoules

Raffard

Rohmer

et al. 2015

International Journal of Remote Sensing

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“…In order to calculate the average velocity deformation map in the LOS direction, a standard estimator proposed by Mouélic et al (2005) was used:…”

Section: Processing Resultsmentioning

confidence: 99%

“…Various complicated and even more precise techniques, like Permanent Scatterer (socalled PS) or time series-based methods, were developed since the introduction of the D-InSAR technique (see Kampes [2006]; Mouélic et al [2005]; Mora, Mallorqui, and Broquetas [2003]; Arnaud et al [2003]). Although the new algorithms are quite more precise and effective especially for low coherency areas, they are not operationally applicable for all interested areas over the globe.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive interferometric process for monitoring land deformation using ASAR and PALSAR satellite interferometric data

Dehghan-Soraki

Sharifikia

Sahebi

2015

GIScience & Remote Sensing

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This study was conducted to apply the enhanced differential interferometric process to interferometric data obtained from C-band Advanced Synthetic Aperture Radar (ASAR) and Phased Array type L-Band Synthetic Aperture Radar (PALSAR) systems, in the Marand plain, Iran. In advance, the capability of each sensor was examined with regard to the signal coherency for sensor-target interactions, which emphasized on the terrific excellency of PALSAR (L-band) to ASAR (C-band) measurements in study area. In the interferometric process, in addition to resolving the topography and baseline related errors (which is conventional in the standard D-InSAR process), subtle quantitative methods were outlined to minimize the secondary, but momentous errors (i.e., orbital and atmospheric) from differential phases. Subsequently, based on the outlined process, the mean deformation as well as three-dimensional displacement maps (using ascending and descending modes) were generated. The deformation maps significantly indicated the downward motion of the surface with the maximum rate of −0.5 millimetre per day for the period, i.e., from 2004 to 2010, with relative dominance in eastern and central to northern parts of the Marand plain. Finally, the results were validated and the source of deformation was inspected using field data such as seismic history; changes in piezometric levels and cross-checking the results from radar measurements itself.

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“…This method can be applied only when a sufficient number of SAR images (typically 40-50) have been acquired over the area of interest. Other methods consist in stacking a set of interferograms to compute maps of ground deformation velocities trends (Usai 2003, Le Mouélic et al 2005, Pepe et al 2005. Both stacking and Persistent Scatterers approaches minimize the atmospheric effects, which are the main source of uncertainty in ground motion velocity estimation in urban areas.…”

Section: Synthetic Aperture Radar (Sar) Data and Interferometric Methodsmentioning

confidence: 99%

Vertical ground motion and historical sea-level records in Dakar (Senegal)

Cozannet

Raucoules²,

Wöppelmann³

et al. 2015

Environ. Res. Lett.

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With growing concerns regarding future impacts of sea-level in major coastal cities, the most accurate information is required regarding local sea-level changes with respect to the coast. Besides global and regional sea-level changes, local coastal vertical ground motions can substantially contribute to local changes in sea-level. In some cases, such ground motions can also limit the usefulness of tide-gauge records, which are a unique source of information to evaluate global sea-level changes before the altimetry era. Using satellite synthetic aperture radar interferometry, this study aims at characterizing vertical coastal ground motion in Dakar (Senegal), where a unique century-long record in Africa has been rediscovered. Given the limited number of available images, we use a stacking procedure to compute ground motion velocities in the line of sight over 1992-2010. Despite a complex geology and a rapid population growth and development, we show that the city as a whole is unaffected by differential ground motions larger than 1 mm year −1 . Only the northern part of the harbor displays subsidence patterns after 2000, probably as a consequence of land reclamation works. However, these ground motions do not affect the historical tide gauge. Our results highlight the value of the historical sea-level records of Dakar, which cover a 100 year time-span in a tropical oceanic region of Africa, where little data are available for past sea-level reconstructions.

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A Least Squares Adjustment of Multi-temporal InSAR Data

Cited by 34 publications

References 17 publications

Potential of diffuse scatterer interferometry for monitoring CO₂ storage sites in European contexts (land cover types)

Potential of diffuse scatterer interferometry for monitoring CO₂ storage sites in European contexts (land cover types)

A comprehensive interferometric process for monitoring land deformation using ASAR and PALSAR satellite interferometric data

Vertical ground motion and historical sea-level records in Dakar (Senegal)

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A Least Squares Adjustment of Multi-temporal InSAR Data

Cited by 34 publications

References 17 publications

Potential of diffuse scatterer interferometry for monitoring CO2 storage sites in European contexts (land cover types)

Potential of diffuse scatterer interferometry for monitoring CO2 storage sites in European contexts (land cover types)

A comprehensive interferometric process for monitoring land deformation using ASAR and PALSAR satellite interferometric data

Vertical ground motion and historical sea-level records in Dakar (Senegal)

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Potential of diffuse scatterer interferometry for monitoring CO₂ storage sites in European contexts (land cover types)

Potential of diffuse scatterer interferometry for monitoring CO₂ storage sites in European contexts (land cover types)