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Auteur M. Martone |
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Coherence evaluation of TanDEM-X interferometric data / M. Martone in ISPRS Journal of photogrammetry and remote sensing, vol 73 (September 2012)
[article]
Titre : Coherence evaluation of TanDEM-X interferometric data Type de document : Article/Communication Auteurs : M. Martone, Auteur ; B. Braütigam, Auteur ; P. Rizzoli, Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 21 - 29 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] analyse de données
[Termes IGN] cohérence des données
[Termes IGN] image TanDEM-X
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] modèle numérique de surface
[Termes IGN] test de performanceRésumé : (Auteur) The TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) mission comprises two nearly identical satellites: TerraSAR-X (TSX, launched in 2007), and TanDEM-X (TDX, launched in June 2010). The primary objective of the mission is to generate a worldwide and consistent digital elevation model (DEM) with an unprecedented accuracy. During the first 3 months after its launch, the TDX satellite was tested and calibrated in monostatic configuration with both satellites flying in 20 km along-track distance, and it was proven that the system and acquisition performance is almost identical to TSX. Both satellites were then brought into close formation of a few hundred meters distance to begin the bistatic commissioning phase. Since then, TSX and TDX have acted as a large single-pass radar interferometer, which overcomes the limitations imposed by repeat-pass interferometry and allow the acquisition of highly accurate cross- and along-track interferograms. In December 2010, TanDEM-X began with operational global acquisition: bistatic and monostatic SAR images are simultaneously acquired in stripmap mode and processed to interferograms, from which a global DEM is derived. The key parameter in estimating interferometric performance is the coherence, which is deeply evaluated in this paper. The impact of different decorrelation sources as well as the performance stability over time is investigated by means of statistical analyses and dedicated acquisitions on defined test sites, demonstrating the outstanding interferometric capabilities of the TanDEM-X mission. Numéro de notice : A2012-311 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.06.006 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.06.006 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31757
in ISPRS Journal of photogrammetry and remote sensing > vol 73 (September 2012) . - pp 21 - 29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2012071 SL Revue Centre de documentation Revues en salle Disponible Prime time positioning: using broadcast TV signals to fill GPS acquisition gaps / M. Martone in GPS world, vol 16 n° 9 (September 2005)
[article]
Titre : Prime time positioning: using broadcast TV signals to fill GPS acquisition gaps Type de document : Article/Communication Auteurs : M. Martone, Auteur ; J. Metzler, Auteur Année de publication : 2005 Article en page(s) : pp 52 - 59 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] GPS assisté pour la navigation (technologies)
[Termes IGN] position directe
[Termes IGN] positionnement par GPS
[Termes IGN] signal analogique
[Termes IGN] signal GPS
[Termes IGN] signal numérique
[Termes IGN] TELEVISIONRésumé : (Editeur) Television. It features prominently in our living rooms and in our daily lives. It informs us, educates us, and entertains us. And now, thanks to a development at Rosum Corp. in Mountain View, California, TV will also position us. Researchers have devised a way to use terrestrial TV signals, both analog and digital, to determine positions. In a similar fashion to how GPS works, a special receiver can extract timing information from received TV signals to produce pseudo-ranges and, with additional transmitter clock offset information from a server, can determine the horizontal coordinates of the receiver. And since TV signals are quite strong, positions can be obtained inside buildings where conventional GPS and often assisted GPS does not work. In this month's column, we examine TV positioning. Authors from Rosum Corp. describe how the technique works, both standalone and in conjunction with GPS, discuss its advantages and limitations, and how the technique might provide added security for the global position, navigation, and timing infrastructure in these uncertain times. Copyright Questex Media Group Inc Numéro de notice : A2005-583 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27718
in GPS world > vol 16 n° 9 (September 2005) . - pp 52 - 59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-05091 SL Revue Centre de documentation Revues en salle Disponible