Descripteur
Termes IGN > sciences naturelles > physique > traitement d'image > traitement d'image radar > interféromètrie par radar à antenne synthétique > interferométrie différentielle
interferométrie différentielleSynonyme(s)Interférométrie radar différentielle ;Dinsar D-insar |
Documents disponibles dans cette catégorie (64)
Ajouter le résultat dans votre panier
Visionner les documents numériques
Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Ground subsidence monitoring in Hong Kong with satellite SAR interferometry / X.L. Ding in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 10 (October 2004)
[article]
Titre : Ground subsidence monitoring in Hong Kong with satellite SAR interferometry Type de document : Article/Communication Auteurs : X.L. Ding, Auteur ; G.X. Liu, Auteur ; Z.W. Li, Auteur ; Z.L. Li, Auteur ; Y.Q. Chen, Auteur Année de publication : 2004 Article en page(s) : pp 1151 - 1156 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] Hong-Kong
[Termes IGN] image radar moirée
[Termes IGN] interferométrie différentielle
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] risque naturel
[Termes IGN] subsidence
[Termes IGN] surveillance géologiqueRésumé : (Auteur) Ground settlement has long been a problem in Hong Kong, as most usable land in Hong Kong was reclaimed from the sea. Ground settlement may affect building structures and underground facilities such as water supply and sewage systems built on the land. Measurements of ground settlement can provide valuable data for assessing the impacts of ground settlement and for improving designs of future land reclamation projects. Experiments have been carried out to assess the performance of INSAR in the environment of Hong Kong especially the temporal decorrelations of SAR images and the potential atmospheric effects on INSAR measurements, and to use INSAR to study the ground settlement problem in Hong Kong. This study finds that the temporal decorrelation is an important problem in the heavily vegetated rugged areas as usually expected, and that the atmospheric effects can be very significant at times. Ground settlements measured over the airport and a residential area are presented. It can be seen from the results that both of the areas are still settling significantly in any years after the reclamation. Numéro de notice : A2004-362 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.10.1151 En ligne : https://doi.org/10.14358/PERS.70.10.1151 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26889
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 10 (October 2004) . - pp 1151 - 1156[article]Landslide monitoring in the Three Gorges area using D-InSAR and corner reflectors / Y. Xia in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 10 (October 2004)
[article]
Titre : Landslide monitoring in the Three Gorges area using D-InSAR and corner reflectors Type de document : Article/Communication Auteurs : Y. Xia, Auteur ; H. Kaufmann, Auteur ; X.F. Guo, Auteur Année de publication : 2004 Article en page(s) : pp 1167 - 1172 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] Chine
[Termes IGN] coin réflecteur
[Termes IGN] image radar moirée
[Termes IGN] interferométrie différentielle
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] mouvement de terrain
[Termes IGN] précision centimétrique
[Termes IGN] surveillance géologique
[Termes IGN] Trois Gorges, barrage desRésumé : (Auteur) The differential INSAR technique has the potential for monitoring centimeter-scale ground motion in an accurate and cost-effective manner. Probably the most important limiting factor in the application of INSAR is temporal change in the complex reflectivity of the ground surface during the period between radar acquisitions. This can be due to changes in such parameters as moisture content or vegetation. The stable artificial corner reflectors can be identified from long temporal series of interferometric SAR images even with large baselines, and therefore decrease the risk of image decorrelation. This paper will discuss the following questions: 1) how to obtain the true phase of a corner reflector in a SAR complex image; 2) how to co-register the corner reflector pixels when the coherence of its surrounding area is extremely low; 3) how to select the interpolation kernel to resample the SAR image; and, 4) how to compute the interferometric phase of two co-registered corner reflectors without flat earth term and corners' height contribution. In order to demonstrate the results, a practical example of landslide monitoring in the Three Gorges area in China is presented. Numéro de notice : A2004-364 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.10.1167 En ligne : https://doi.org/10.14358/PERS.70.10.1167 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26891
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 10 (October 2004) . - pp 1167 - 1172[article]Simultane Schätzung von Topographie und Dynamik polarer Gletscher aus multi-temporalen SAR Interferogrammen / F.J. Meyer (2004)
Titre : Simultane Schätzung von Topographie und Dynamik polarer Gletscher aus multi-temporalen SAR Interferogrammen Titre original : [Simultaneous estimation of topography and motion of polar glaciers and ice sheets from multi-temporal SAR interferograms] Type de document : Thèse/HDR Auteurs : F.J. Meyer, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2004 Collection : DGK - C Sous-collection : Dissertationen num. 579 Importance : 113 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-5018-1 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Arctique
[Termes IGN] calotte glaciaire
[Termes IGN] glacier
[Termes IGN] image multitemporelle
[Termes IGN] image radar moirée
[Termes IGN] interferométrie différentielle
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] position directeRésumé : (Auteur) This thesis presents a new technique to simultaneously estimate topography and motion of polar glaciers and ice sheets from multi-temporal SAR interferograms. In this approach the unknown parameters, i.e. topography and surface displacement, are estimated from a redundant number of observations. The resulting redundancy is systematically used to attach realistic accuracy and robustness measures to all estimated unknowns and to reveal possible gross errors in the observations or errors in the model. Additionally, the redundancy facilitates replacing very restrictive model components by more flexible models with a higher amount of free parameters. This leads to a better description of the real behavior of the object.
The approach combines several SAR interferograms into a least-squares adjustment based on the Gauss-Markov model. In order to connect the multi-temporal data sets, a spatio-temporal model is proposed that describes the properties of the surface and its temporal evolution. The parameterization of the model can be adapted considering the properties of the object under investigation. Tests with simulated data show that, with this technique, both topography and motion of polar ice caps can be estimated with an accuracy of a few meters or a few centimeters per day, depending on the configuration of the adjustment. The quality of the estimated parameters depends on the accuracy of the phase observations, the observation geometry, and the number of involved data sets. Analyses of the robustness of the approach additionally indicate a high robustness of the estimated unknowns with respect to gross errors in the observations. The influence of the atmospheric path delay on the unknowns is analyzed and quantified for various observation geometries and different atmospheric conditions. It is shown that errors in the assumed deformation model significantly falsify the estimated parameters. Thus, the configuration of the spatio-temporal model must be chosen carefully. In addition to the estimation of surface topography and motion, the method and its inherent analysis tools allow to determine the observation geometry that is necessary to reach a pre-defined accuracy level in advance. Therefore, the method is a very useful tool for project planing. By means of a case study aimed at the observation of a huge ice dome in the Russian arctic the feasibility of the approach in real-life situations is demonstrated.Numéro de notice : 13257 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54941 Réservation
Réserver ce documentExemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 13257-01 35.45 Livre Centre de documentation Télédétection Disponible 13257-02 35.45 Livre Centre de documentation Télédétection Disponible Monitoring of slow ground deformation by ERS radar interferometry on the Vauvert salt mine (France): comparison with ground-based measurement / Daniel Raucoules in Remote sensing of environment, vol 88 n° 4 (30/12/2003)
[article]
Titre : Monitoring of slow ground deformation by ERS radar interferometry on the Vauvert salt mine (France): comparison with ground-based measurement Type de document : Article/Communication Auteurs : Daniel Raucoules, Auteur ; C. Maisons, Auteur ; C. Carnec, Auteur ; S. Le Mouelic, Auteur ; Christine King, Auteur ; S. Hosford, Auteur Année de publication : 2003 Article en page(s) : pp 468 - 478 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse comparative
[Termes IGN] déformation de la croute terrestre
[Termes IGN] données de terrain
[Termes IGN] Gard (30)
[Termes IGN] géologie locale
[Termes IGN] image radar moirée
[Termes IGN] interferométrie différentielle
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] mine de selRésumé : (Auteur) The differential SAR Interferometry (DInSAR) technique has been applied to a test site near Vauvert (France) to detect and monitor ground deformation. This site corresponds to the location of an industrial exploitation of underground salt using the solution mining technique. An area of subsidence has been observed using in situ measurements. Despite conditions unfavorable for InSAR because of the vegetal cover, we show that radar remote sensing observations provide valuable information which substantially improves our knowledge of the phenomenon. An adaptive phase filtering process has been used to improve the coherence level. In particular, our study shows that the geometry of the subsidence bowl is different to that previously assumed using ground-based techniques only. The size of the subsidence bowl (8 km) is larger than expected. This information will be useful for further modeling of the deformation and to improve the coverage of the in situ measurement networks. It also shows that radar interferometry can be used for the longterm monitoring of such sites and to predict potential environmental issues. Numéro de notice : A2003-368 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2003.09.005 En ligne : https://doi.org/10.1016/j.rse.2003.09.005 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26448
in Remote sensing of environment > vol 88 n° 4 (30/12/2003) . - pp 468 - 478[article]Applying differential InSAR to orbital dynamics: a new approach for estimating ERS trajectories / A.O. Kohlhase in Journal of geodesy, vol 77 n° 9 (December 2003)
[article]
Titre : Applying differential InSAR to orbital dynamics: a new approach for estimating ERS trajectories Type de document : Article/Communication Auteurs : A.O. Kohlhase, Auteur ; F.K. Massonnet, Auteur Année de publication : 2003 Article en page(s) : pp 493 - 502 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Techniques orbitales
[Termes IGN] ERS
[Termes IGN] géophysique interne
[Termes IGN] interferométrie différentielle
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] résidu conjugué
[Termes IGN] séisme
[Termes IGN] trajectographie (positionnement)Résumé : (Auteur) A new approach for tuning the trajectories of the European remote sensing (ERS) satellites is developed and assessed. Differential dualpass interferometry is applied to calculate interferograms from the phase difference of synthetic aperture radar (SAR) images acquired by the ERS satellites over the site of the 1992 earthquake in Landers, California. These interferograms contain information about orbital trajectories and geophysical deformation. Beginning with good prior estimates of the orbital trajectories, a radial and an across-track orbital adjustment is estimated at each epoch. The data are the fringe counts along distance and azimuth. Errors in the acrosstrack and radial components of the orbit estimates produce fringes in the interferograms. The spacing between roughly parallel fringes gives the gradients in distance and azimuth coordinates. The approach eliminates these fringes from interferometric pairs spanning relatively short time intervals containing few topographic residuals or atmospheric artefacts. An optimum interferometric path with six SAR acquisitions is selected to study post and inter-seismic deformation fields. In order to regularize the problem, it is assumed that the radial and across-track adjustments both sum to zero. Applying the adjustment approach to the prior estimates of trajectory from the Delft Institute for Earth-Orientated Space Research (DEOS), root mean squares of 7.3 cm for the across-track correction components and 2.4 cm for the radial ones are found. Assuming 0.1 fringes for the a priori standard deviation of the measurement, the approach yields mean standard deviations of 2.4 cm for the across-track and 4.5 cm for the radial components. The approach allows an 'interval by interval' improvement of a set of orbital estimates from which post-fit interferograms of different time intervals spanning a total 3.8 year inter-seismic time interval can be created. The interferograms calculated with the post-fit orbital estimates compare favorably with those corrected with a conventional orbital tuning approach. Using the adjust-ment approach, it is possible to distinguish between orbital and deformation contributions to interferometric SAR (InSAR) phase gradients. Surface deformation changes over an inter-seismic time interval longer than one year can be measured. This approach is, however, limited to wellcorrelated interferograms where it is possible to measure the fringe gradient. Numéro de notice : A2003-366 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-003-0336-3 En ligne : https://doi.org/10.1007/s00190-003-0336-3 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26446
in Journal of geodesy > vol 77 n° 9 (December 2003) . - pp 493 - 502[article]Réservation
Réserver ce documentExemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 266-03101 RAB Revue Centre de documentation En réserve L003 Disponible 266-03102 RAB Revue Centre de documentation En réserve L003 Disponible Integrating interferometric SAR data with levelling measurements of land subsidence using geostatistic / Y. Zhou in International Journal of Remote Sensing IJRS, vol 24 n° 18 (September 2003)PermalinkSpace-based surface change detection with differential synthetic-aperture radar (SAR) interferometry: Potentialities and preliminary investigations / Antonio Vettore in Geomatica, vol 57 n° 3 (September 2003)PermalinkJers SAR interferometry for land subsidence monitoring / Tazio Strozzi in IEEE Transactions on geoscience and remote sensing, vol 41 n° 7 (July 2003)PermalinkSAR monitoring of progressive and seasonal ground deformation using the permanent scatterers technique / C. Colesanti in IEEE Transactions on geoscience and remote sensing, vol 41 n° 7 (July 2003)PermalinkUrban subsidence monitoring using radar interferometry: algorithms and validation / M. Crosetto in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 7 (July 2003)PermalinkMéthode de correction des effets troposphériques en interferométrie différentielle multi date / F. Chaabane in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 170 (Avril 2003)PermalinkEtude de sites instables sur la ville de Paris par interférométrie radar (technique "permanent scatterers") / E. Pajot (2003)PermalinkRéalisation d'un système d'information géographique dédié à l'étude des déformations de surface sur la ville de Paris / J.L. Kouame (2002)PermalinkSpécificité du milieu urbain tropical pour la cartographie des déformations de surface par interférométrie Radar (ERS) : Application au pompage dans les systemes aquifères à Djakarta et Hanoi / C. Carnec in Bulletin [Société Française de Photogrammétrie et Télédétection], n° 161 (Janvier 2001)PermalinkMetric relations in INSAR topographic modelling / G. Brandstätter (31/05/1999)Permalink