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Use of doppler parameters for ship velocity computation in SAR images / Alfredo Renga in IEEE Transactions on geoscience and remote sensing, vol 54 n° 7 (July 2016)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 54 n° 7 (July 2016) . - pp 3995 - 4011 Titre : Use of doppler parameters for ship velocity computation in SAR images Type de document : Article/Communication Auteurs : Alfredo Renga, Auteur ; Antonio Moccia, Auteur Année de publication : 2016 Article en page(s) : pp 3995 - 4011 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] analyse discriminante [Termes IGN] détection de cible [Termes IGN] données Doppler [Termes IGN] image TerraSAR-X [Termes IGN] objet mobile [Termes IGN] vitesse de déplacement Résumé : (Auteur) This paper deals with the exploitation of Doppler centroid measurements for ship velocity estimation from focused single-look complex synthetic aperture radar (SAR) images. An algorithm is presented, which can be used as a discrimination tool to reduce the false alarm rate of standard adaptive threshold detectors and to complement the ship detection task with velocity estimation. The outputs are the indication of the presence of a moving target and the estimate of its slant range velocity. After a review of its theoretical background, algorithm features and performance are verified by application to TerraSAR-X data. The proposed method performs robust Doppler spectrum derivation for candidate ship targets and background pixels. The presented results show that the estimated radial velocity is in very good agreement (5% root-mean-square deviation) with that resulting from the azimuth offset method. Rejection of bright sea features and azimuth ambiguities is also demonstrated, taking advantage of the performed velocity analysis. Numéro de notice : A2016-876 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2016.2533023 En ligne : https://doi.org/10.1109/TGRS.2016.2533023 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83036 [article]

Performance of stereoradargrammetric methods applied to spaceborne monostatic-bistatic synthetic aperture radar / Alfredo Renga in IEEE Transactions on geoscience and remote sensing, vol 47 n° 2 (February 2009)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 47 n° 2 (February 2009) . - pp 544 - 560 Titre : Performance of stereoradargrammetric methods applied to spaceborne monostatic-bistatic synthetic aperture radar Type de document : Article/Communication Auteurs : Alfredo Renga, Auteur ; Antonio Moccia, Auteur Année de publication : 2009 Article en page(s) : pp 544 - 560 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] analyse de sensibilité [Termes IGN] image satellite [Termes IGN] interféromètrie par radar à antenne synthétique [Termes IGN] modèle numérique de terrain [Termes IGN] modèle stéréoscopique [Termes IGN] radar à antenne synthétique [Termes IGN] radargrammétrie Résumé : (Auteur) This paper aims to investigate the performance of stereoradargrammetric methods applied to spaceborne monostatic–bistatic synthetic aperture radar (SAR) data for digital elevation model (DEM) generation. Stereoradargrammetric techniques for robust DEM generation were successfully experienced on monostatic repeat-pass SIR-A, SIR-B, SIR-C/X-SAR, ERS1/2, JERS-1, and Radarsat data. However, novel configurations achievable by modern spacecraft flying in formation will allow for the attainment of very large baselines between the antennas in a single-pass bistatic geometry so that the height determination accuracy can benefit from both stereo effect and simultaneous acquisition. Five models for relief reconstruction by monostatic–bistatic SAR stereoradargrammetry are presented, and an error budget is assessed for each of them. Results of the sensitivity analysis exhibit metric accuracy, and therefore, the technique could be applied for height reconstruction as a methodology complementary to SAR interferometry. Copyright IEEE Numéro de notice : A2009-022 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2008.2003184 En ligne : https://doi.org/10.1109/TGRS.2008.2003184 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29652 [article]

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