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Termes IGN > sciences naturelles > physique > optique > optique physique > radiométrie > rayonnement électromagnétique > radiance
radianceSynonyme(s)Luminance énergétique |
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Rethinking satellite-based solar irradiance modelling the SOLIS clear-sky module / R.W. Mueller in Remote sensing of environment, vol 91 n° 2 (30/05/2004)
[article]
Titre : Rethinking satellite-based solar irradiance modelling the SOLIS clear-sky module Type de document : Article/Communication Auteurs : R.W. Mueller, Auteur ; K.F. Dagestad, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 160 - 174 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] analyse comparative
[Termes IGN] données de terrain
[Termes IGN] éclairement énergétique
[Termes IGN] ENVISAT
[Termes IGN] ERS
[Termes IGN] Helios
[Termes IGN] MétéoSat seconde génération
[Termes IGN] modèle de transfert radiatif
[Termes IGN] nuage
[Termes IGN] radiance
[Termes IGN] rayonnement solaireRésumé : (Auteur) Accurate solar irradiance data are not only of particular importance for the assessment of the radiative forcing of the climate system, but also absolutely necessary for efficient planning and operation of solar energy systems. Within the European project Heliosat-3, a new type of solar irradiance scheme is developed. This new type will be based on radiative transfer models (RTM) using atmospheric parameter information retrieved from the Meteosat Second Generation (MSG) satellite (clouds, ozone, water vapour) and the ERS-2/ENVISAT satellites (aerosols, ozone).
This paper focuses on the description of the clear-sky module of the new scheme, especially on the integrated use of a radiative transfer model. The linkage of the clear-sky module with the cloud module is also briefly described in order to point out the benefits of the integrated RTM use for the all-sky situations. The integrated use of an RTM within the new Solar Irradiance Scheme SOLIS is applied by introducing a new fitting function called the modified Lambert-Beer (MLB) relation. Consequently, the modified Lambert-Beer relation and its role for an integrated RTM use are discussed. Comparisons of the calculated clear-sky irradiances with ground-based measurements and the current clear-sky module demonstrate the advantages and benefits of SOLIS. Since SOLIS can provide spectrally resolved irradiance data, it can be used for different applications. Beside improved information for the planning of solar energy systems, the calculation of photosynthetic active radiation, UV index, and illuminance is possible.Numéro de notice : A2004-242 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2004.02.009 En ligne : https://doi.org/10.1016/j.rse.2004.02.009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26769
in Remote sensing of environment > vol 91 n° 2 (30/05/2004) . - pp 160 - 174[article]Four years of oceans colour remote sensing with MOS-IRS / M. Hetscher in International Journal of Remote Sensing IJRS, vol 25 n° 7 (April 2004)
[article]
Titre : Four years of oceans colour remote sensing with MOS-IRS Type de document : Article/Communication Auteurs : M. Hetscher, Auteur ; H. Krawczyk, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 1415 - 1421 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] capteur multibande
[Termes IGN] composition colorée
[Termes IGN] couleur de l'océan
[Termes IGN] eaux côtières
[Termes IGN] image IRS
[Termes IGN] image MOS
[Termes IGN] océanographie spatiale
[Termes IGN] radiance
[Termes IGN] rayonnement proche infrarouge
[Termes IGN] sédiment
[Termes IGN] spectromètre imageur
[Termes IGN] traitement d'imageRésumé : (Auteur) The imaging spectrometer MOS IRS-P3 was launched in March 1996 as the first example of a new generation of ocean colour sensors. It consists of three different spectrometers in the visible/near-infrared spectral region with 18 channels. The IRS-P3 mission is focused on the remote sensing of case 2 water, particularly the derivation of different water constituents in coastal waters. Due to the more complex spectral behaviour of case 2 water, a new methodological approach was developed which works directly with satellite measured top-of-atmosphere radiance and accounts for the correlation of the different water constituents as well as for the spectral shape. This paper gives an overview of the mission, the scientific goals and the development and improvement of the retrieval algorithms. The potential of the algorithm is demonstrated and examples of selected European coasts are shown. Derived maps of water constituents are presented. Numéro de notice : A2004-094 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160310001592382 En ligne : https://doi.org/10.1080/01431160310001592382 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26621
in International Journal of Remote Sensing IJRS > vol 25 n° 7 (April 2004) . - pp 1415 - 1421[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 080-04071 RAB Revue Centre de documentation En réserve L003 Exclu du prêt An autonomous above-water system for the validation of ocean color radiance data / G. Ziborni in IEEE Transactions on geoscience and remote sensing, vol 42 n° 2 (February 2004)
[article]
Titre : An autonomous above-water system for the validation of ocean color radiance data Type de document : Article/Communication Auteurs : G. Ziborni, Auteur ; F. Melin, Auteur ; et al., Auteur Année de publication : 2004 Article en page(s) : pp 401 - 415 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Adriatique, mer
[Termes IGN] analyse comparative
[Termes IGN] eaux côtières
[Termes IGN] étalonnage radiométrique
[Termes IGN] exitance spectrale
[Termes IGN] image Aqua-MODIS
[Termes IGN] image Envisat-MERIS
[Termes IGN] image Seawifs
[Termes IGN] luminance lumineuse
[Termes IGN] photométrie
[Termes IGN] radianceRésumé : (Auteur) An operational system for autonomous above-water radiance measurements, called the SeaWiFS Photometer Revision for Incident Surface Measurements (SeaPRISM), was deployed at the Acqua Alta Oceanographic Tower in the northern Adriatic Sea and used for the validation of remote sensing radiometric products in coastal waters. The SeaPRISM data were compared with simultaneous data collected from an independent in-water system for a wide variety of sun elevations along with different atmospheric, seawater, and sea state conditions. The average absolute differences between the above- and in-water determinations of water-leaving radiances (computed linearly) were less than 4.5% in the 412-555-nm spectral interval. A similar comparison for normalized water-leaving radiances showed average absolute differences less than 5.1%. The comparison between normalized water-leaving radiances computed from remote sensing and SeaPRISM matchup data, showed absolute spectral average (linear) differences of 17.0%, 22.1%, and 20.8% for SeaWiFS, MODIS, and MERIS, respectively. The results, in keeping with those produced by independent in-water systems, suggest the feasibility of operational coastal networks of autonomous above-water radiometers deployed on fixed platforms (towers, lighthouses, navigation aids, etc.) to support ocean color validation activities. Numéro de notice : A2004-137 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2003.821064 En ligne : https://doi.org/10.1109/TGRS.2003.821064 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26664
in IEEE Transactions on geoscience and remote sensing > vol 42 n° 2 (February 2004) . - pp 401 - 415[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-04021 RAB Revue Centre de documentation En réserve L003 Disponible High spatial resolution spectral mixture analysis of urban reflectance / C. Small in Remote sensing of environment, vol 88 n° 1 (30/11/2003)
[article]
Titre : High spatial resolution spectral mixture analysis of urban reflectance Type de document : Article/Communication Auteurs : C. Small, Auteur Année de publication : 2003 Article en page(s) : pp 170 - 186 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] albedo
[Termes IGN] analyse des mélanges spectraux
[Termes IGN] image à résolution métrique
[Termes IGN] image Ikonos
[Termes IGN] milieu urbain
[Termes IGN] radiance
[Termes IGN] réflectanceRésumé : (Auteur) This study uses IKONOS imagery to quantify the combined spatial and spectral charactenistics of urban reflectance in 14 urban areas worldwide. IKONOS 1-m panchromatic imagery provides a detailed measure of spatial variations in albedo while IKONOS 4-m multispectral imagery allows the relative contributions of different matenials to the spectrally heterogeneous radiance field to be determined and their abundance to be mapped. Spatial autocorrelation analyses indicate that the characteristic scale of urban reflectance is consistently between 10 and 20 m for the cities in this study. Spectral mixture analysis quantifies the relative contributions of the dominant spectral endmembers to the overall reflectance of the urban mosaic. Spectral mixing spaces defined by the two low-order principal components account for 96% to 990% of image variance and have a consistent triangular structure spanned by high albedo, low albedo and vegetation endmembers. Spectral mixing among these endmembers is predominantly linear although some nonlinear mixing is observed along the gray axis spanning the high and low albedo endmembers. Inversion of a constrained three-component linear mixing model produces stable, consistent estimates of endmember abundance. RMS errors based on the misfit between observed radiance vectors and modeled radiance vectors (derived from fraction estimates and image endmembers) are generally less than 3% of the mean of the observed radiance. Agreement between observed radiance and fraction estimates does not guarantee the accuracy of the areal fraction estimates, but it does indicate that the three-component linear model provides a consistent and widely applicable physical characterization of urban reflectance. Field validated fraction estimates have applications in urban vegetation monitoring and pervious surface mapping. Numéro de notice : A2003-334 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2003.04.008 En ligne : https://doi.org/10.1016/j.rse.2003.04.008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22629
in Remote sensing of environment > vol 88 n° 1 (30/11/2003) . - pp 170 - 186[article]A very quick neural network algorithm for cloud detection / K.R. Al-Rawi in Geocarto international, vol 18 n° 1 (March - May 2003)
[article]
Titre : A very quick neural network algorithm for cloud detection Type de document : Article/Communication Auteurs : K.R. Al-Rawi, Auteur ; José Luis Casanova, Auteur ; A. Vasileisky, Auteur Année de publication : 2003 Article en page(s) : pp 45 - 50 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] classification par réseau neuronal
[Termes IGN] image NOAA-AVHRR
[Termes IGN] nuage
[Termes IGN] radianceRésumé : (Auteur) A very quick neural network algorithm for cloud detection, based on a neural network, is developed. Cloud detection is speeded up through the use of the Class Assigning Space (CAS). The CAS is a classified Radiance Space (RS), which has been built using the trained neural network. The GAS is used to assign a class for each pixel in the image instead of using the ANN to treat every single pixel. The detection time is approximately one second. Channel 1 and channel 5 of N0AA-AVHRR images have been used. The Supervised ARTII artificial neural network has been employed. The system performance has been tested with different training sets and different input data. Numéro de notice : A2003-101 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040308542262 En ligne : https://doi.org/10.1080/10106040308542262 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22397
in Geocarto international > vol 18 n° 1 (March - May 2003) . - pp 45 - 50[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 059-03011 RAB Revue Centre de documentation En réserve L003 Disponible Fundamentals of geological and environmental remote sensing / R.K. Vincent (1997)PermalinkIntroduction to radiometry and photometry / W.R. Mccluney (1994)PermalinkDetermination of surface reflectance and estimates of atmospheric optical depth and single scattering albedo from Landsat Thematic Mapper data / J.E. Conel in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)PermalinkEffects of topography on radiance from upland vegetation in north Wales / A.G. Thomson in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)PermalinkRemote detection of canopy water stress in coniferous forests using the NS001 Thematic Mapper simulator and the thermal infrared multispectral scanner / L.L. Pierce in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 5 (may 1990)PermalinkCombination of digital elevation models with Spot-1 HRV multispectral imagery for reflectance factor mapping / C. Yang in Remote sensing of environment, vol 32 n° 1 (01/04/1990)PermalinkA model for retrieval of surface spectral reflectance from satellite radiance measurements using realistic atmospheric aerosol profiles / S. Basu in International Journal of Remote Sensing IJRS, vol 11 n° 3 (March 1990)PermalinkComparison of CNES spherical and NASA hemispherical large aperture integration sources : using the Spot-2 satellite instruments / M. Leroy in Remote sensing of environment, vol 31 n° 2 (01/02/1990)PermalinkDeriving cirrus information using the visible and near-ir channels of the future NOAA-AVHRR radiometer / K. Masuda in Remote sensing of environment, vol 31 n° 1 (01/01/1990)PermalinkThe determination of broad band surface albedo from AVHRR visible and near-infrared radiances / R.W. Saunders in International Journal of Remote Sensing IJRS, vol 11 n° 1 (January 1990)Permalink