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Persistent scatterer interferometry : potential, limits and initial C- and X-band comparison / M. Crosetto in Photogrammetric Engineering & Remote Sensing, PERS, vol 76 n° 9 (September 2010)
[article]
Titre : Persistent scatterer interferometry : potential, limits and initial C- and X-band comparison Type de document : Article/Communication Auteurs : M. Crosetto, Auteur ; O. Montserrat, Auteur ; R. Iglesias, Auteur ; et al., Auteur Année de publication : 2010 Article en page(s) : pp 1061 - 1069 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse comparative
[Termes IGN] bande C
[Termes IGN] bande X
[Termes IGN] Barcelone
[Termes IGN] coin réflecteur
[Termes IGN] déformation d'image
[Termes IGN] échantillonnage d'image
[Termes IGN] erreur de positionnement
[Termes IGN] image C-SAR
[Termes IGN] image Envisat-ASAR
[Termes IGN] image ERS-SAR
[Termes IGN] image radar moirée
[Termes IGN] image TerraSAR-X
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] résiduRésumé : (Auteur) This paper is focused on the potential and limits of Persistent Scatterer Interferometry (PSi), a powerful remote sensing technique used to measure deformation phenomena. It only refers to satellite-based PSI techniques, focusing on the most important sources of C-band SAR data: ers and Envisat. In addition, it compares C- and X-band results, considering data from the high-resolution TerraSAR-X sensor. The paper begins with a description of the main characteristics of PSI. It then discusses the most important PSI products and their performances, analyzing their spatial sampling, the so-called residual topographic error and PSI geocoding, the average displacement rates, and the deformation time series. As C-band products are concerned, the paper reports some relevant PSI validation results, which come from the ESA-funded Terrafirma Validation Project. Regarding the X-band, it describes the results obtained over the City of Barcelona by processing 13 TerraSAR-X images. The last part discusses the main limits of PSI. Numéro de notice : A2010-367 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.76.9.1061 En ligne : https://doi.org/10.14358/PERS.76.9.1061 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30561
in Photogrammetric Engineering & Remote Sensing, PERS > vol 76 n° 9 (September 2010) . - pp 1061 - 1069[article]Evaluation of Terrasar-X observations for wetland INSAR application / S.H. Hong in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)
[article]
Titre : Evaluation of Terrasar-X observations for wetland INSAR application Type de document : Article/Communication Auteurs : S.H. Hong, Auteur ; S. Wdowinski, Auteur ; S.W. Kim, Auteur Année de publication : 2010 Article en page(s) : pp 864 - 873 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] bande X
[Termes IGN] cohérence des données
[Termes IGN] Floride (Etats-Unis)
[Termes IGN] image radar moirée
[Termes IGN] image TerraSAR-X
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] marais
[Termes IGN] polarimétrie radarRésumé : (Auteur) This paper assesses the potential of using spaceborne X-band synthetic aperture radar (SAR) data for monitoring water-level changes over wetlands. Our analysis is based on three sets of TerraSAR-X (TSX) observations acquired over South Florida's Everglades wetlands during an eight-month period in 2008. The first set was acquired in single HH polarization stripmap mode over our northern study area, consisting of managed wetlands and urban environments. The second set was acquired in dual-polarization stripmap mode over the western half of the same area, consisting mostly of managed wetlands. The third set was also acquired with dual-polarization stripmap mode over our southern study area, consisting of natural flow freshand salt-water wetlands in the southern Everglades. The first data set was used for a proof-of-concept study to verify that X-band data can generate coherent interferograms in wetland areas. Interferometric processing of this data set shows a high level of coherence (> 0.35) over both wetland and urban regions, maintaining interferometric phase in all three interferograms spanning 11 days. Surprisingly, phase is maintained over some of the wetlands even for interferograms spanning 33 days. The other two data sets were used to evaluate interferometric coherence of all four polarization modes and to determine dominant scattering mechanism in each wetland environment. Our results show high coherence values (> 0.4) in all polarization modes, with highest values in HH, then VV, and lowest in HV or VH. Interferograms calculated from multipolarization data show very similar fringe patterns regardless of the polarization type, suggesting that the phase information in all polarization data reflects water-level changes in wetlands and that volume scattering may be less important than commonly believed. We also used the two multipolarization data sets to conduct the Pauli decomposition, finding a strong dependence of scattering mechanism on vegetation type. The high interferometric coherence level of all polarization data suggests that a significant part of the X-band scattered signal interacts with lower sections of the vegetation (trunks and branches), because scattering from wind-affected canopies cannot support such a high coherence level. The high spatial resolution of TSX, combined with its 11-day repeat orbit, makes this X-band sensor surprisingly suitable for wetland interferometric SAR applications. Copyright IEEE Numéro de notice : A2010-041 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2009.2026895 Date de publication en ligne : 28/08/2009 En ligne : https://doi.org/10.1109/TGRS.2009.2026895 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30237
in IEEE Transactions on geoscience and remote sensing > vol 48 n° 2 (February 2010) . - pp 864 - 873[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2010021 RAB Revue Centre de documentation En réserve L003 Disponible Terrasar-X instrument operations rooted in the system engineering and calibration projet / U. Steinbrecher in IEEE Transactions on geoscience and remote sensing, vol 48 n° 2 (February 2010)
[article]
Titre : Terrasar-X instrument operations rooted in the system engineering and calibration projet Type de document : Article/Communication Auteurs : U. Steinbrecher, Auteur ; D. Schulze, Auteur ; J. Boer, Auteur ; J. Mittermayer, Auteur Année de publication : 2010 Article en page(s) : pp 633 - 641 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] bande X
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] radar à antenne synthétique
[Termes IGN] TerraSAR-XRésumé : (Auteur) This paper presents the TerraSAR-X instrument operations embedded into the Instrument Operations and Calibration Segment. Special focus is on the data-take (DT) command generation. The command generation for standard DTs is discussed, and the nonnominal DT commanding is described for several examples which demonstrate the flexibility of both the TerraSAR-X instrument and the instrument operations system on-ground. Copyright IEEE Numéro de notice : A2010-039 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2009.2032177 Date de publication en ligne : 04/12/2009 En ligne : https://doi.org/10.1109/TGRS.2009.2032177 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30235
in IEEE Transactions on geoscience and remote sensing > vol 48 n° 2 (February 2010) . - pp 633 - 641[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-2010021 RAB Revue Centre de documentation En réserve L003 Disponible Quality assessment of SRTM C- and X-band interferometric data: Implications for the retrieval of vegetation canopy height / W.S. Walker in Remote sensing of environment, vol 106 n° 4 (28/02/2007)
[article]
Titre : Quality assessment of SRTM C- and X-band interferometric data: Implications for the retrieval of vegetation canopy height Type de document : Article/Communication Auteurs : W.S. Walker, Auteur ; J.M. Kellndorfer, Auteur ; L.E. Pierce, Auteur Année de publication : 2007 Article en page(s) : pp 428 - 448 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] bande C
[Termes IGN] bande X
[Termes IGN] bruit (théorie du signal)
[Termes IGN] canopée
[Termes IGN] erreur de mesure
[Termes IGN] erreur relative
[Termes IGN] Etats-Unis
[Termes IGN] filtrage du bruit
[Termes IGN] hauteur des arbres
[Termes IGN] image SRTM
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] MNS SRTM
[Termes IGN] modèle numérique de surface
[Termes IGN] qualité des données
[Termes IGN] radargrammétrieRésumé : (Auteur) The Shuttle Radar Topography Mission distinguished itself as the first near-global spaceborne mission to demonstrate direct sensitivity to vertical vegetation structure. Whether this sensitivity is viewed as exploitable signal or unwanted bias, a great deal of interest exists in retrieving vegetation canopy height information from the SRTM data. This study presents a comprehensive application-specific assessment of SRTM data quality, focusing on the characterization and mitigation of two primary sources of relative vertical error: uncompensated Shuttle mast motion and random phase noise. The assessment spans four test sites located in the upper Midwestern United States and examines the dependence of data quality on both frequency, i.e., C-band vs. X-band, and the number of acquired datatakes. The results indicate that the quality of SRTM data may be higher than previously thought. Novel mitigation strategies include a knowledge-based approach to sample averaging, which has the potential to reduce phase noise error by 43 to 80%. The strategies presented here are being implemented as part of an ongoing effort to produce regional- to continental-scale estimates of vegetation canopy height within the conterminous U.S. Copyright Elsevier Numéro de notice : A2007-068 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2006.09.007 En ligne : https://doi.org/10.1016/j.rse.2006.09.007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28433
in Remote sensing of environment > vol 106 n° 4 (28/02/2007) . - pp 428 - 448[article]Comparison of L- and X-band PolSAR data for characterization of polarization orientation angle shift induced by man-made structure / K. Iribe (2007)
Titre : Comparison of L- and X-band PolSAR data for characterization of polarization orientation angle shift induced by man-made structure Type de document : Article/Communication Auteurs : K. Iribe, Auteur ; M. Sato, Auteur Editeur : Paris : Agence Spatiale Européenne ASE / European Space Agency ESA Année de publication : 2007 Collection : ESA Specialist Panel, ISSN 1609-042X num. 644 Conférence : POLinSAR 2007, 3rd International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry 22/01/2007 26/01/2007 Frascati Italie OA Proceedings Importance : 6 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse comparative
[Termes IGN] bande L
[Termes IGN] bande X
[Termes IGN] détail topographique artificiel
[Termes IGN] données polarimétriques
[Termes IGN] image radar moirée
[Termes IGN] Japon
[Termes IGN] milieu urbain
[Termes IGN] polarimétrie radar
[Termes IGN] polarisation
[Termes IGN] SendaïRésumé : (Auteur) In this paper, we offer an overview of the frequency characteristics on the polarization orientation angle shifts induced by Man-made structures. Nowadays, it is recognized that this parameter is closely related to the target azimuth slope. The algorithm to estimate the orientation angle shifts from polarimetric SAR data of urban area was suggested. By means of this algorithm, we compare longer wavelength L-band and shorter wavelength X-band polarimetric SAR measurements over the same area to understand what useful information can be derived from these measurements. In addition, we examine the similarities and differences of these datasets acquired with different frequency bands. The overview is demonstrated by JAXA L-band and NICT X-band Pi-SAR data over Sendai city, Japan. Numéro de notice : 13579 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Communication DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64265 Documents numériques
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