Generation of digital elevation models by using SIR-C/X-SAR multifrequency two-pass interferometry: the Etna case study

Lanari, R.; Fornaro, G.; Riccio, Daniele; Migliaccio, M.; Papathanassiou, Kostas; Moreira, J.; Schwäbisch, M.; Dutra, Luciano Vieira; Puglisi, Giuseppe; Franceschetti, Giorgio; Coltelli, M.

doi:10.1109/36.536526

Cited by 128 publications

(51 citation statements)

References 13 publications

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“…If two SAR images from slightly different viewing angles are considered (interferometric pair) their difference (interferometric fringes) can be usefully exploited both to generate Digital Elevation Maps (DEMs), and to measure slight topographic changes such as shifts in tectonic plates, movement of glaciers and so on. Recently, SAR interferometry was also considered to monitor ground deformation in volcanic active areas Lanari et al, 1996;Briole et al, 1997;Puglisi and Coltelli, 2001). SAR interferometry allows integrating the techniques traditionally considered to measure ground deformations in volcanic areas, such as EDM (Electronic Distance Measuring) or GPS (Global Positioning System) techniques (Gudmundsson et al, 2002;Fernández et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Inversion of SAR data in active volcanic areas by optimization techniques

Nunnari

Puglisi

Guglielmino

2005

Nonlin. Processes Geophys.

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Abstract. The inversion problem concerns the identification of parameters of a volcanic source causing observable changes in ground deformation data recorded in volcanic areas. In particular, this paper deals with the inversion of ground deformation measured by using SAR (Synthetic Aperture Radar) interferometry and an inversion approach formulated in terms of an optimization problem is proposed. Based on this inversion scheme, it is shown that the problem of inverting ground deformation data in terms of a single source, of Mogi or Okada type, is numerically well conditioned. In the paper, two case studies of inverting actual SAR data recorded on Mt. Etna during eruptions occurring in 1998 and 2001 are investigated, showing the suitability of the proposed technique.

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Section: Introductionmentioning

confidence: 99%

Inversion of SAR data in active volcanic areas by optimization techniques

Nunnari

Puglisi

Guglielmino

2005

Nonlin. Processes Geophys.

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“…To compare band differences on interferometric SAR has produced very strong and different results. (Lanari, 1996) For sure these works make this topic important and help to improve recent years. Some kind of software has been written for process of SAR data and every kind of software varied from algorithmic combinations.…”

Section: Introductionmentioning

confidence: 99%

Evaluation Digital Elevation Model Generated by Synthetic Aperture Radar Data

Makineci

Karabörk

2016

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Digital elevation model, showing the physical and topographical situation of the earth, is defined a tree-dimensional digital model obtained from the elevation of the surface by using of selected an appropriate interpolation method. DEMs are used in many areas such as management of natural resources, engineering and infrastructure projects, disaster and risk analysis, archaeology, security, aviation, forestry, energy, topographic mapping, landslide and flood analysis, Geographic Information Systems (GIS). Digital elevation models, which are the fundamental components of cartography, is calculated by many methods. Digital elevation models can be obtained terrestrial methods or data obtained by digitization of maps by processing the digital platform in general. Today, Digital elevation model data is generated by the processing of stereo optical satellite images, radar images (radargrammetry, interferometry) and lidar data using remote sensing and photogrammetric techniques with the help of improving technology.One of the fundamental components of remote sensing radar technology is very advanced nowadays. In response to this progress it began to be used more frequently in various fields. Determining the shape of topography and creating digital elevation model comes the beginning topics of these areas. It is aimed in this work , the differences of evaluation of quality between Sentinel-1A SAR image ,which is sent by European Space Agency ESA and Interferometry Wide Swath imaging mode and C band type , and DTED-2 (Digital Terrain Elevation Data) and application between them. The application includes RMS static method for detecting precision of data. Results show us to variance of points make a high decrease from mountain area to plane area.

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“…Examining the approaches carefully, one reveals some deficiencies. For instance, the direct filtering methods [1,2] applied in the spatial domain may not preserve details of fringes although the window direction-dependent [3] and size-dependent [4][5][6] methods are able to remedy the preservation difficulty to some degree. With the assumption that the true signal and noise could be separated in the frequency domain after transformation, the denoising is performed by suppressing part of the transformed coefficients.…”

Section: Introductionmentioning

confidence: 99%

A Sparsity-Based InSAR Phase Denoising Algorithm Using Nonlocal Wavelet Shrinkage

Fang

Wang

et al. 2016

Remote Sensing

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An interferometric synthetic aperture radar (InSAR) phase denoising algorithm using the local sparsity of wavelet coefficients and nonlocal similarity of grouped blocks was developed. From the Bayesian perspective, the double-l 1 norm regularization model that enforces the local and nonlocal sparsity constraints was used. Taking advantages of coefficients of the nonlocal similarity between group blocks for the wavelet shrinkage, the proposed algorithm effectively filtered the phase noise. Applying the method to simulated and acquired InSAR data, we obtained satisfactory results. In comparison, the algorithm outperformed several widely-used InSAR phase denoising approaches in terms of the number of residues, root-mean-square errors and other edge preservation indexes.

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Generation of digital elevation models by using SIR-C/X-SAR multifrequency two-pass interferometry: the Etna case study

Cited by 128 publications

References 13 publications

Inversion of SAR data in active volcanic areas by optimization techniques

Inversion of SAR data in active volcanic areas by optimization techniques

Evaluation Digital Elevation Model Generated by Synthetic Aperture Radar Data

A Sparsity-Based InSAR Phase Denoising Algorithm Using Nonlocal Wavelet Shrinkage

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