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Land surface emissivity retrieval from combined mid-infrared and thermal infrared data of MSG-SEVIRI / G.M. Jiang in Remote sensing of environment, vol 105 n° 4 (30/12/2006)  

Public [article]  inRemote sensing of environment > vol 105 n° 4 (30/12/2006) . - pp 326 - 340 Titre : Land surface emissivity retrieval from combined mid-infrared and thermal infrared data of MSG-SEVIRI Type de document : Article/Communication Auteurs : G.M. Jiang, Auteur ; Z.L. Li, Auteur ; F. Nerry, Auteur Année de publication : 2006 Article en page(s) : pp 326 - 340 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] correction atmosphérique [Termes IGN] couvert végétal [Termes IGN] emissivité [Termes IGN] image MSG-SEVIRI [Termes IGN] rayonnement infrarouge moyen [Termes IGN] rayonnement infrarouge thermique [Termes IGN] sol nu [Termes IGN] surface du sol [Termes IGN] température de luminance Résumé : (Auteur) This work addressed the retrieval of Land Surface Emissivity (LSE) from combined mid-infrared and thermal infrared data of Spinning Enhanced Visible and Infra-Red Imager (SEVIRI) onboard the geostationary satelliteMeteosat Second Generation (MSG). To correct for the atmospheric effects in satellite measurements, a new atmospheric correction scheme was developed for both Middle Infra-Red (MIR) and Thermal Infra-Red (TIR) channels. For the MIR channel, because it is less sensitive to the change of water vapor content, the clear-sky and time-nearest European Centre for Median-range Weather Forecast (ECMWF) atmospheric data were used for the images where no atmospheric data are available. For TIR channels, a modified model of Diurnal Temperature Cycle (DTC) used by Göttsche and Olesen and Schädlich et al. was adopted. The separation of Land Surface Temperature (LST) and LSE is based on the concept of the Temperature Independent Spectral Indices (TISI) constructed with one channel in MIR and one channel in TIR. The results of two different combinations (combination of channels 4 and 9 and of channels 4 and 10) and two successive days at six specific locations over North Africa show that the retrievals are consistent. The range of emissivity in MSG-SEVIRI channel 4 goes from 0.5 for bare areas to 0.96 for densely vegetated areas, whereas the emissivities in MSG-SEVIRI channels 9 and 10 are usually from 0.9 to 0.95 for bare areas and from 0.95 to 1.0 for vegetated areas. For densely vegetated areas, the emissivities in MSG-SEVIRI channel 9 are larger than the ones in channel 10, whereas the opposite is observed over bare areas. The RMS differences between two combinations over the whole studied region are 0.017 for emissivity in channel 4, 0.008 for emissivity in channel 9 and 0.007 for emissivity in channel 10. Numéro de notice : A2006-563 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2006.07.015 En ligne : https://doi.org/10.1016/j.rse.2006.07.015 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28286 [article]

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)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 10 (October 2004) . - pp 1151 - 1156 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 géologique Résumé : (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 [article]

Morphological transformation for detecting spatial conflicts in digital generalization / B. Su (23/06/1997)

Public contenu dans ICC 97 proceedings 18th ICA/ACI International Cartographic Conference, 1. Volume 1 / L. Ottoson (1997) Titre : Morphological transformation for detecting spatial conflicts in digital generalization Type de document : Article/Communication Auteurs : B. Su, Auteur ; Z.L. Li, Auteur Editeur : Gävle : Swedish Cartographic Society Année de publication : 23/06/1997 Conférence : ICC 1997, 18th international cartographic conference ICA 23/06/1997 27/06/1997 Stockholm Suède OA Proceedings Importance : pp 460 - 467 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] conflit d'espace [Termes IGN] généralisation cartographique automatisée [Termes IGN] modèle mathématique [Termes IGN] translation [Vedettes matières IGN] Généralisation Résumé : (Auteur) The detection of spatial conflicts is one of the main issues in digital generalization. This paper describes some mathematical models for this purpose. These models are based on the basic operators developed in mathematical morphology which is a science of shape. More concretely, an operation called translation (or transportation) is realized using morphological operators ; then, this translation operator is used for detection of spatial conflicts. The detection is achieved by a translation and then an overlay operation. These models are experimented with real map data. Numéro de notice : C1997-061 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65720

Some basic mathematic models for feature displacement in digital map generalization / Z.L. Li (23/06/1997)

Public contenu dans ICC 97 proceedings 18th ICA/ACI International Cartographic Conference, 1. Volume 1 / L. Ottoson (1997) Titre : Some basic mathematic models for feature displacement in digital map generalization Type de document : Article/Communication Auteurs : Z.L. Li, Auteur ; B. Su, Auteur Editeur : Gävle : Swedish Cartographic Society Année de publication : 23/06/1997 Conférence : ICC 1997, 18th international cartographic conference ICA 23/06/1997 27/06/1997 Stockholm Suède OA Proceedings Importance : pp 452 - 459 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] conflit d'espace [Termes IGN] déplacement d'objet géographique [Termes IGN] généralisation cartographique automatisée [Termes IGN] modèle mathématique [Termes IGN] morphologie mathématique [Termes IGN] translation [Vedettes matières IGN] Généralisation Résumé : (Auteur) Generalization is a very important topic in cartography/GIS. After generalization, a process called displacement might be required for the following reasons : (a) features being coalesced due to a reduction in graphic space available ; (b) spatial conflicts being created by inappropriate algorithms or procedures ; (c) the characteristics of the structure of some maps features (i.e. a road junction) needing to be kept. In this study, two types of feature displacement are distinguished, i.e. feature translation and feature modification. Some mathematical models for both types of displacement are presented, which are based on the operators developed in mathematical morphology which is a science dealing with form, shape, and structure of objects. These models have also been experimented using real map data sets. The results show that these models are very promising. Numéro de notice : C1997-060 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65719

Temperature-independent spectral indices in thermal infrared bands / François Becker in Remote sensing of environment, vol 32 n° 1 (01/04/1990)  

Public [article]  inRemote sensing of environment > vol 32 n° 1 (01/04/1990) . - pp 17 - 33 Titre : Temperature-independent spectral indices in thermal infrared bands Type de document : Article/Communication Auteurs : François Becker, Auteur ; Z.L. Li, Auteur Année de publication : 1990 Article en page(s) : pp 17 - 33 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] analyse spectrale [Termes IGN] emissivité [Termes IGN] image NOAA-AVHRR [Termes IGN] Normalized Difference Vegetation Index [Termes IGN] rayonnement infrarouge thermique [Termes IGN] signature spectrale Numéro de notice : A1990-079 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/0034-4257(90)90095-4 En ligne : https://doi.org/10.1016/0034-4257(90)90095-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25497 [article]