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PALSAR radiometric and geometric calibration / M. Shimada in IEEE Transactions on geoscience and remote sensing, vol 47 n° 12 Tome 1 (December 2009)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 47 n° 12 Tome 1 (December 2009) . - pp 3915 - 3932 Titre : PALSAR radiometric and geometric calibration Type de document : Article/Communication Auteurs : M. Shimada, Auteur ; O. Isoguchi, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 3915 - 3932 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] étalonnage géométrique [Termes IGN] étalonnage radiométrique [Termes IGN] image ALOS-PALSAR [Termes IGN] PALSAR Résumé : (Auteur) This paper summarizes the results obtained from geometric and radiometric calibrations of the Phased-Array L-Band Synthetic Aperture Radar (PALSAR) on the Advanced Land Observing Satellite, which has been in space for three years. All of the imaging modes of the PALSAR, i.e., single, dual, and full polarimetric strip modes and scanning synthetic aperture radar (SCANSAR), were calibrated and validated using a total of 572 calibration points collected worldwide and distributed targets selected primarily from the Amazon forest. Through raw-data characterization, antenna-pattern estimation using the distributed target data, and polarimetric calibration using the Faraday rotation-free area in the Amazon, we performed the PALSAR radiometric and geometric calibrations and confirmed that the geometric accuracy of the strip mode is 9.7-m root mean square (rms), the geometric accuracy of SCANSAR is 70 m, and the radiometric accuracy is 0.76 dB from a corner-reflector analysis and 0.22 dB from the Amazon data analysis (standard deviation). Polarimetric calibration was successful, resulting in a VV/HH amplitude balance of 1.013 (0.0561 dB) with a standard deviation of 0.062 and a phase balance of 0.612deg with a standard deviation of 2.66deg. Copyright IEEE Numéro de notice : A2009-491 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2009.2023909 En ligne : https://doi.org/10.1109/TGRS.2009.2023909 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30120 [article]

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