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Auteur Z. Zhao |
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Correction of positional errors and geometric distortions in topographic maps and DEMs using a rigorous SAR simulation technique / H. Liu in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 9 (September 2004)
[article]
Titre : Correction of positional errors and geometric distortions in topographic maps and DEMs using a rigorous SAR simulation technique Type de document : Article/Communication Auteurs : H. Liu, Auteur ; Z. Zhao, Auteur ; K.C. Jezek, Auteur Année de publication : 2004 Article en page(s) : pp 1031 - 1042 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] Antarctique
[Termes IGN] carte topographique
[Termes IGN] correction géométrique
[Termes IGN] erreur de positionnement
[Termes IGN] image Radarsat
[Termes IGN] jeu de données localisées
[Termes IGN] modèle mathématique
[Termes IGN] modèle numérique de surface
[Termes IGN] simulationRésumé : (Auteur) In the history of surveying and mapping, a Iarge volumes of topographic maps and digital elevation models have been created at various scales throughout the world. However, positional errors and geometric distortions may exist in the topographic contour maps and their derived DEMs due to inaccurate ground control and poor navigation techniques in the early years. In this paper, we present a new technique to detect and correct positional errors and geometric distortions in topographic data based on rigorous Synthetic Aperture Radar (SAR) image simulation and mathematical modeling of SAR imaging geometry. Our method has been successfully applied to two USGS topographical data sets in Antarctica. Using Radarsat SAR imagery, positional errors of these two data sets have been reduced from 5 km to 200 m and from 200 m to 50 m, respectively. Numéro de notice : A2004-345 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.9.1031 En ligne : http://dx.doi.org/10.14358/PERS.70.9.1031 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26872
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 9 (September 2004) . - pp 1031 - 1042[article]