PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images

Prior to the application of any persistent scatterer interferometry (PSI) technique for the monitoring of terrain displacement phenomena, an adequate pixel selection must be carried out in order to prevent the inclusion of noisy pixels in the processing. The rationale is to detect the so-called pers...

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Autores: Iglesias González, Rubén, Mallorquí Franquet, Jordi Joan|||0000-0002-9424-1889, Monells Miralles, Daniel, López Martínez, Carlos|||0000-0002-1366-9446, Fabregas Canovas, Francisco Javier|||0000-0002-7654-9695, Aguasca Solé, Alberto|||0000-0003-2079-4322, Gili Ripoll, José Antonio|||0000-0003-4718-2545, Corominas Dulcet, Jordi|||0000-0001-5049-7201
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/79131
Acceso en línea:https://hdl.handle.net/2117/79131
https://dx.doi.org/10.3390/rs70100530
Access Level:acceso abierto
Palabra clave:Syntethic aperture radar
Topographical surveying
Interferometry
Synthetic aperture radar (SAR)
Differential SAR interferometry (DInSAR)
Persistent scatterer interferometry (PSI)
Temporal sublook coherence (TSC)
Ground-based SAR (GB-SAR)
Spotlight
Persistent scatterer
Aperture radar interferometry
Ground-based SAR
Permanent scatterers
Earths surface
Interferograms
Compensation
Topography
Areas
Model
Radar d'obertura sintètica
Topografia
Interferometria
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar
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network_name_str España
repository_id_str
spelling PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR imagesIglesias González, RubénMallorquí Franquet, Jordi Joan|||0000-0002-9424-1889Monells Miralles, DanielLópez Martínez, Carlos|||0000-0002-1366-9446Fabregas Canovas, Francisco Javier|||0000-0002-7654-9695Aguasca Solé, Alberto|||0000-0003-2079-4322Gili Ripoll, José Antonio|||0000-0003-4718-2545Corominas Dulcet, Jordi|||0000-0001-5049-7201Syntethic aperture radarTopographical surveyingInterferometrySynthetic aperture radar (SAR)Differential SAR interferometry (DInSAR)Persistent scatterer interferometry (PSI)Temporal sublook coherence (TSC)Ground-based SAR (GB-SAR)SpotlightPersistent scattererAperture radar interferometryGround-based SARPermanent scatterersEarths surfaceInterferogramsCompensationTopographyAreasModelRadar d'obertura sintèticaTopografiaInterferometriaÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::RadarPrior to the application of any persistent scatterer interferometry (PSI) technique for the monitoring of terrain displacement phenomena, an adequate pixel selection must be carried out in order to prevent the inclusion of noisy pixels in the processing. The rationale is to detect the so-called persistent scatterers, which are characterized by preserving their phase quality along the multi-temporal set of synthetic aperture radar (SAR) images available. Two criteria are mainly available for the estimation of pixels' phase quality, i.e., the coherence stability and the amplitude dispersion or permanent scatterers (PS) approach. The coherence stability method allows an accurate estimation of the phase statistics, even when a reduced number of SAR acquisitions is available. Unfortunately, it requires the multi-looking of data during the coherence estimation, leading to a spatial resolution loss in the final results. In contrast, the PS approach works at full-resolution, but it demands a larger number of SAR images to be reliable, typically more than 20. There is hence a clear limitation when a full-resolution PSI processing is to be carried out and the number of acquisitions available is small. In this context, a novel pixel selection method based on exploiting the spectral properties of point-like scatterers, referred to as temporal sublook coherence (TSC), has been recently proposed. This paper seeks to demonstrate the advantages of employing PSI techniques by means of TSC on both orbital and ground-based SAR (GB-SAR) data when the number of images available is small (10 images in the work presented). The displacement maps retrieved through the proposed technique are compared, in terms of pixel density and phase quality, with traditional criteria. Two X-band datasets composed of 10 sliding spotlight TerraSAR-X images and 10 GB-SAR images, respectively, over the landslide of El Forn de Canillo (Andorran Pyrenees), are employed for this study. For both datasets, the TSC technique has showed an excellent performance compared with traditional techniques, achieving up to a four-fold increase in the number of persistent scatters detected, compared with the coherence stability approach, and a similar density compared with the PS approach, but free of outliers.Peer Reviewed20152015-01-0120152015-11-12journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/79131https://dx.doi.org/10.3390/rs70100530reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2http://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/791312026-05-27T15:37:01Z
dc.title.none.fl_str_mv PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
title PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
spellingShingle PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
Iglesias González, Rubén
Syntethic aperture radar
Topographical surveying
Interferometry
Synthetic aperture radar (SAR)
Differential SAR interferometry (DInSAR)
Persistent scatterer interferometry (PSI)
Temporal sublook coherence (TSC)
Ground-based SAR (GB-SAR)
Spotlight
Persistent scatterer
Aperture radar interferometry
Ground-based SAR
Permanent scatterers
Earths surface
Interferograms
Compensation
Topography
Areas
Model
Radar d'obertura sintètica
Topografia
Interferometria
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar
title_short PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
title_full PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
title_fullStr PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
title_full_unstemmed PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
title_sort PSI deformation map retrieval by means of temporal sublook coherence on reduced sets of SAR images
dc.creator.none.fl_str_mv Iglesias González, Rubén
Mallorquí Franquet, Jordi Joan|||0000-0002-9424-1889
Monells Miralles, Daniel
López Martínez, Carlos|||0000-0002-1366-9446
Fabregas Canovas, Francisco Javier|||0000-0002-7654-9695
Aguasca Solé, Alberto|||0000-0003-2079-4322
Gili Ripoll, José Antonio|||0000-0003-4718-2545
Corominas Dulcet, Jordi|||0000-0001-5049-7201
author Iglesias González, Rubén
author_facet Iglesias González, Rubén
Mallorquí Franquet, Jordi Joan|||0000-0002-9424-1889
Monells Miralles, Daniel
López Martínez, Carlos|||0000-0002-1366-9446
Fabregas Canovas, Francisco Javier|||0000-0002-7654-9695
Aguasca Solé, Alberto|||0000-0003-2079-4322
Gili Ripoll, José Antonio|||0000-0003-4718-2545
Corominas Dulcet, Jordi|||0000-0001-5049-7201
author_role author
author2 Mallorquí Franquet, Jordi Joan|||0000-0002-9424-1889
Monells Miralles, Daniel
López Martínez, Carlos|||0000-0002-1366-9446
Fabregas Canovas, Francisco Javier|||0000-0002-7654-9695
Aguasca Solé, Alberto|||0000-0003-2079-4322
Gili Ripoll, José Antonio|||0000-0003-4718-2545
Corominas Dulcet, Jordi|||0000-0001-5049-7201
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Syntethic aperture radar
Topographical surveying
Interferometry
Synthetic aperture radar (SAR)
Differential SAR interferometry (DInSAR)
Persistent scatterer interferometry (PSI)
Temporal sublook coherence (TSC)
Ground-based SAR (GB-SAR)
Spotlight
Persistent scatterer
Aperture radar interferometry
Ground-based SAR
Permanent scatterers
Earths surface
Interferograms
Compensation
Topography
Areas
Model
Radar d'obertura sintètica
Topografia
Interferometria
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar
topic Syntethic aperture radar
Topographical surveying
Interferometry
Synthetic aperture radar (SAR)
Differential SAR interferometry (DInSAR)
Persistent scatterer interferometry (PSI)
Temporal sublook coherence (TSC)
Ground-based SAR (GB-SAR)
Spotlight
Persistent scatterer
Aperture radar interferometry
Ground-based SAR
Permanent scatterers
Earths surface
Interferograms
Compensation
Topography
Areas
Model
Radar d'obertura sintètica
Topografia
Interferometria
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar
description Prior to the application of any persistent scatterer interferometry (PSI) technique for the monitoring of terrain displacement phenomena, an adequate pixel selection must be carried out in order to prevent the inclusion of noisy pixels in the processing. The rationale is to detect the so-called persistent scatterers, which are characterized by preserving their phase quality along the multi-temporal set of synthetic aperture radar (SAR) images available. Two criteria are mainly available for the estimation of pixels' phase quality, i.e., the coherence stability and the amplitude dispersion or permanent scatterers (PS) approach. The coherence stability method allows an accurate estimation of the phase statistics, even when a reduced number of SAR acquisitions is available. Unfortunately, it requires the multi-looking of data during the coherence estimation, leading to a spatial resolution loss in the final results. In contrast, the PS approach works at full-resolution, but it demands a larger number of SAR images to be reliable, typically more than 20. There is hence a clear limitation when a full-resolution PSI processing is to be carried out and the number of acquisitions available is small. In this context, a novel pixel selection method based on exploiting the spectral properties of point-like scatterers, referred to as temporal sublook coherence (TSC), has been recently proposed. This paper seeks to demonstrate the advantages of employing PSI techniques by means of TSC on both orbital and ground-based SAR (GB-SAR) data when the number of images available is small (10 images in the work presented). The displacement maps retrieved through the proposed technique are compared, in terms of pixel density and phase quality, with traditional criteria. Two X-band datasets composed of 10 sliding spotlight TerraSAR-X images and 10 GB-SAR images, respectively, over the landslide of El Forn de Canillo (Andorran Pyrenees), are employed for this study. For both datasets, the TSC technique has showed an excellent performance compared with traditional techniques, achieving up to a four-fold increase in the number of persistent scatters detected, compared with the coherence stability approach, and a similar density compared with the PS approach, but free of outliers.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01
2015
2015-11-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/79131
https://dx.doi.org/10.3390/rs70100530
url https://hdl.handle.net/2117/79131
https://dx.doi.org/10.3390/rs70100530
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2

http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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