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Permanent validation of the geometric calibration as a complement to MISR data production system / V. Jovanovic in Revue Française de Photogrammétrie et de Télédétection, n° 181 (Mars 2006)  

Public [article]  inRevue Française de Photogrammétrie et de Télédétection > n° 181 (Mars 2006) . - pp 38 - 44 Titre : Permanent validation of the geometric calibration as a complement to MISR data production system Type de document : Article/Communication Auteurs : V. Jovanovic, Auteur ; D. Nelson, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 38 - 44 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] capteur en peigne [Termes IGN] contrôle qualité automatique [Termes IGN] données localisées [Termes IGN] étalonnage en vol [Termes IGN] étalonnage géométrique [Termes IGN] image Terra-MISR [Termes IGN] Multi-Angle Imaging Spectroradiometer Résumé : (Auteur) This paper focuses on the validation aspect of the geometric calibration approach as implemented for the Multi-angle Imaging SpectroRadiometer (MISR), a part of the payload for NASA's Terra spacecraft. The MISR instrument, launched in December 1999, continuously acquires a systematic, global, multi-angle imagery in reflected sunlight in order to support and improve studies of-Earth's ecology and climate. Moderate-resolution data acquired with a unique configuration of nine fixed pushbroom cameras need to be autonomously georectified prior to use in subsequent scientific retrievals. A robust data production algorithm is based on in-flight generated calibration datasets produced at the beginning of the mission and operationally validated in the first two years. However, in order to maintain required subpixel co-registration accuracies, globally and throughout the life of the mission, data production operations are complemented with a quality monitoring system. This system has been critical in: 1) resolving impact issues that georectification quality may have on subsequent retrievals, 2) providing bases for decisions regarding updates of the calibration datasets and production algorithm, and 3) evaluating and summarizing overall pointing stability and georectification performance. With the series of quality investigations focusing on the georectification requirements, it was determined that the pointing stability of one of the cameras is not as good as the other eight cameras. As a result, the data production algorithm has been updated to assure uniform georectification and co-registration performance prior to processing a final data collection for the entire life of the mission. Presented in this paper will be: an overview of the calibration approach and related quality monitoring system, operational results prior to and after the final implementation and the global summaries on geospatial data accuracies. Copyright SFPT Numéro de notice : A2006-616 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T11-48.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28339 [article]

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