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Termes IGN > sciences naturelles > physique > métrologie > étalonnage > étalonnage d'instrument > étalonnage de capteur (imagerie) > étalonnage in situ
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AVHRR-based spectral vegetation Index for quantitative assessment of vegetation state and productivity: calibration and validation / F. Kogan in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 8 (August 2003)
[article]
Titre : AVHRR-based spectral vegetation Index for quantitative assessment of vegetation state and productivity: calibration and validation Type de document : Article/Communication Auteurs : F. Kogan, Auteur ; A. Gitelson, Auteur ; E. Zakarin, Auteur ; L. Spivak, Auteur ; L. Lebed, Auteur Année de publication : 2003 Article en page(s) : pp 899 - 906 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Advanced Very High Resolution Radiometer
[Termes IGN] étalonnage en vol
[Termes IGN] gestion des ressources
[Termes IGN] indice de végétation
[Termes IGN] Normalized Difference Vegetation Index
[Termes IGN] troncRésumé : (Auteur) The goal of the work was to estimate, quantitatively, vegetation state and productivity using AVHRR based Vegetation Condition Index (VCI). The VCI algorithm includes application of postlaunch calibration to visible channels, calculation of NDVI from channels' reflectance, removal of high frequency noise from NDVI's annual time series, stratification of ecosystem resources, and separation of ecosystem and weather components in the NDVI value. The weather component was calculated by normalizing the NDVI to the difference of the extreme NDVI fluctuations (maximum and minimum), derived from multiyear data for each week and land pixel. The VCI was compared with wheat density measured in Kazakhstan. Six test fields were located in different climatic (annual precipitation 150 to 700 mm) and ecological (semi desert to steppe forest) zones with elevations from 200 to 700 m and a wide range of NDVI variation over space and season from 0.05 to 0.47. Plant density (PD) was measured in wheat fields by calculating the number of stems per unit area. PD deviation from year to year (PDD) was expressed as a deviation from median density calculated from multiyear data. The correlation between PDD and VCI all stations was positive and quite strong (r2 > 0.75) with the Standard Errors of Estimates (SEE) of PDD less than 16 percent ; for individual stations, the SEE was less than 11 percent. The results indicate that VCI is an appropriate index for monitoring weather impact on vegetation and for assessment of pasture and crop productivity in Kazakhstan. Because satellite observations provide better spatial and temporal coverage, the VCI based system will provide efficient tools for management of water resources and the improvement of agricultural planning. This system will serve as a prototype in the other parts of the world where ground observations are limited or not available. Numéro de notice : A2003-170 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : 10.14358/PERS.69.8.899 En ligne : https://doi.org/10.14358/PERS.69.8.899 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22466
in Photogrammetric Engineering & Remote Sensing, PERS > vol 69 n° 8 (August 2003) . - pp 899 - 906[article]Digital image georeferencing from a multiple camera system by GPS-INS / M.M. Mostafa in ISPRS Journal of photogrammetry and remote sensing, vol 56 n° 1 (May - June 2001)
[article]
Titre : Digital image georeferencing from a multiple camera system by GPS-INS Type de document : Article/Communication Auteurs : M.M. Mostafa, Auteur ; K.P. Schwarz, Auteur Année de publication : 2001 Article en page(s) : pp 1 - 12 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation
[Termes IGN] caméra numérique
[Termes IGN] capteur aérien
[Termes IGN] chambre métrique
[Termes IGN] erreur moyenne quadratique
[Termes IGN] erreur moyenne quadratique altimétrique
[Termes IGN] étalonnage au sol
[Termes IGN] étalonnage en vol
[Termes IGN] géoréférencement direct
[Termes IGN] GPS en mode différentiel
[Termes IGN] GPS-INS
[Termes IGN] image aérienne
[Termes IGN] objet géographique 3D
[Termes IGN] point d'appuiRésumé : (Auteur) In this paper, the development and testing of an airborne fully digital multi-sensor system for digital mapping data acquisition is presented. The system acquires two streams of data, namely, navigation (georeferencing) data and imaging data. The navigation data are obtained by integrating an accurate strapdown inertial navigation system with a differential GPS system (DGPS). The imaging data are acquired by two low-cost digital cameras, configured in such a way so as to reduce their geometric limitations. The two cameras capture strips of overlapping nadir and oblique images. The GPS/INS-derived trajectory contains the full translational and rotational motion of the carrier aircraft. Thus, image exterior orientation information is extracted from the trajectory, during post-processing. This approach eliminates the need for ground control (GCP) when computing 3D positions of objects that appear in the field of view of the system imaging component. Two approaches for calibrating the system are presented, namely, terrestrial calibration and in-flight calibration. Test flights were conducted over the campus of The University of Calgary. Testing the system showed that best ground point positioning accuracy at 1:12,000 average image scale is 0.2 m (RMS) in casting and northing and 0.3 m (RMS) in height. Preliminary results indicate that major applications of such a system in the future are in the field of digital mapping, at scales of 1:5000 and smaller, and in the generation of digital elevation models for engineering applications. Copyright ISPRS Numéro de notice : A2001-216 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/S0924-2716(01)00030-2 En ligne : https://doi.org/10.1016/S0924-2716(01)00030-2 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21910
in ISPRS Journal of photogrammetry and remote sensing > vol 56 n° 1 (May - June 2001) . - pp 1 - 12[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-01021 SL Revue Centre de documentation Revues en salle Disponible Calibration status of the NOAA AVHRR solar reflectance channels / R.M. Mitchell (1999)
Titre : Calibration status of the NOAA AVHRR solar reflectance channels Type de document : Monographie Auteurs : R.M. Mitchell, Auteur Editeur : Melbourne : Commonwealth Scientific and Industrial Research Organization CSIRO Année de publication : 1999 Collection : CSIRO Atmospheric research technical paper num. 42 Importance : 20 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-0-643-06349-5 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Advanced Very High Resolution Radiometer
[Termes IGN] coefficient d'étalonnage
[Termes IGN] étalonnage en vol
[Termes IGN] étalonnage radiométrique
[Termes IGN] radiomètre à balayage
[Termes IGN] réflectanceIndex. décimale : 35.13 Prises de vues par capteurs spatiaux Résumé : (Auteur) The solar reflectance channels on the NOAA AVHRR instrument have no on-board calibration source and are known to drift in sensitivity following launch. Various methods have been developed for the post-launch calibration of these channels. This document brings together the results of this work in a form suited to the operational calibration of AVHRR data sets from both historical and currently operational sensors. The CalWatch project aims to provide users of the AVHRR solar reflectance channels with a set of calibration coefficients maintained centrally, enabling uniform generation of higher level products across the user community. Accordingly, direct electronic access is provided to the data tables appearing in this document so that processing software can be furnished with current calibration coefficients. Numéro de notice : 11119 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=54357 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 11119-01 35.13 Livre Centre de documentation En réserve M-103 Disponible ASTER preflight and inflight calibration and the validation of level 2 products / K. Thome in IEEE Transactions on geoscience and remote sensing, vol 36 n° 4 (July 1998)
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Titre : ASTER preflight and inflight calibration and the validation of level 2 products Type de document : Article/Communication Auteurs : K. Thome, Auteur ; et al., Auteur Année de publication : 1998 Article en page(s) : pp 1161 - 1172 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Advanced Spaceborne Thermal Emission and Reflection Radiometer
[Termes IGN] étalonnage au sol
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] étalonnage en vol
[Termes IGN] image Terra-ASTERNuméro de notice : A1998-228 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/36.701023 En ligne : https://ieeexplore.ieee.org/document/701023 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26192
in IEEE Transactions on geoscience and remote sensing > vol 36 n° 4 (July 1998) . - pp 1161 - 1172[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-98041 RAB Revue Centre de documentation En réserve L003 Disponible MISR prelaunch instrument calibration and characterization results / Carol J. Bruegge in IEEE Transactions on geoscience and remote sensing, vol 36 n° 4 (July 1998)
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Titre : MISR prelaunch instrument calibration and characterization results Type de document : Article/Communication Auteurs : Carol J. Bruegge, Auteur ; et al., Auteur Année de publication : 1998 Article en page(s) : pp 1186 - 1198 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] étalonnage au sol
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] Multi-Angle Imaging SpectroradiometerNuméro de notice : A1998-230 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/36.701025 En ligne : https://doi.org/10.1109/36.701025 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26194
in IEEE Transactions on geoscience and remote sensing > vol 36 n° 4 (July 1998) . - pp 1186 - 1198[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-98041 RAB Revue Centre de documentation En réserve L003 Disponible Recent advances in sensors, radiometric calibration, and processing of remotely sensed data / P.S. Chavez (1993)PermalinkThree methods for the absolute calibration of the NOAA AVHRR sensors in-flight / P.M. Teillet in Remote sensing of environment, vol 31 n° 2 (01/02/1990)PermalinkIn-flight aerial camera calibration from photography of linear features / J.G. Fryer in Photogrammetric Engineering & Remote Sensing, PERS, vol 55 n° 12 (december 1989)PermalinkReflectance-based and radiance-based methods for the in-flight absolute calibration of multispectral sensors / P.N. Slater in Remote sensing of environment, vol 22 n° 1 (01/06/1987)PermalinkColloque SPOT 1, Premiers résultats en vol, Toulouse, décembre 1986 / Centre national d'études spatiales (1987)PermalinkIn-orbit scientific calibration of Hipparcos / W.G. Tuohey in ESA journal, vol 11 n° 1 (01/01/1987)Permalink