Descripteur
Termes IGN > 1- Outils - instruments et méthodes > instrument > capteur (télédétection) > radiomètre > Advanced Visible & Near Infrared Radiometer
Advanced Visible & Near Infrared RadiometerSynonyme(s)AVNIR |
Documents disponibles dans cette catégorie (4)
Ajouter le résultat dans votre panier Affiner la recherche Interroger des sources externes
Etendre la recherche sur niveau(x) vers le bas
Mapping the distribution of ferric iron minerals on a vertical mine face using derivative analysis of hyperspectral imagery (430–970 nm) / R. Murphy in ISPRS Journal of photogrammetry and remote sensing, vol 75 (January 2013)
[article]
Titre : Mapping the distribution of ferric iron minerals on a vertical mine face using derivative analysis of hyperspectral imagery (430–970 nm) Type de document : Article/Communication Auteurs : R. Murphy, Auteur ; S. Monteiro, Auteur Année de publication : 2013 Article en page(s) : pp 29 - 39 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Advanced Visible & Near Infrared Radiometer
[Termes IGN] analyse d'image numérique
[Termes IGN] Australie occidentale (Australie)
[Termes IGN] dérivée
[Termes IGN] image hyperspectrale
[Termes IGN] mine de fer
[Termes IGN] photographie infrarouge couleur
[Termes IGN] rayonnement proche infrarouge
[Termes IGN] réflectance spectraleRésumé : (Auteur) Hyperspectral imagery is used to map the distribution of iron and separate iron ore from shale (a waste product) on a vertical mine face in an open-pit mine in the Pilbara, Western Australia. Vertical mine faces have complex surface geometries which cause large spatial variations in the amount of incident and reflected light. Methods used to analyse imagery must minimise these effects whilst preserving any spectral variations between rock types and minerals. Derivative analysis of spectra to the 1st-, 2nd- and 4th-order is used to do this. To quantify the relative amounts and distribution of iron, the derivative spectrum is integrated across the visible and near infrared spectral range (430–970 nm) and over those wavelength regions containing individual peaks and troughs associated with specific iron absorption features. As a test of this methodology, results from laboratory spectra acquired from representative rock samples were compared with total amounts of iron minerals from X-ray diffraction (XRD) analysis. Relationships between derivatives integrated over the visible near-infrared range and total amounts (% weight) of iron minerals were strongest for the 4th- and 2nd-derivative (R2 = 0.77 and 0.74, respectively) and weakest for the 1st-derivative (R2 = 0.56). Integrated values of individual peaks and troughs showed moderate to strong relationships in 2nd- (R2 = 0.68–0.78) and 4th-derivative (R2 = 0.49–0.78) spectra. The weakest relationships were found for peaks or troughs towards longer wavelengths. The same derivative methods were then applied to imagery to quantify relative amounts of iron minerals on a mine face. Before analyses, predictions were made about the relative abundances of iron in the different geological zones on the mine face, as mapped from field surveys. Integration of the whole spectral curve (430–970 nm) from the 2nd- and 4th-derivative gave results which were entirely consistent with predictions. Conversely, integration of the 1st-derivative gave results that did not fit with predictions nor distinguish between zones with very large and small amounts of iron oxide. Classified maps of ore and shale were created using a simple level-slice of the 1st-derivative reflectance at 702, 765 and 809 nm. Pixels classified as shale showed a similar distribution to kaolinite (an indicator of shales in the region), as mapped by the depth of the diagnostic kaolinite absorption feature at 2196 nm. Standard statistical measures of classification performance (accuracy, precision, recall and the Kappa coefficient of agreement) indicated that nearly all of the pixels were classified correctly using 1st-derivative reflectance at 765 and 809 nm. These results indicate that data from the VNIR (430–970 nm) can be used to quantify, without a priori knowledge, the total amount of iron minerals and to distinguish ore from shale on vertical mine faces. Numéro de notice : A2013-030 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.09.014 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.09.014 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32168
in ISPRS Journal of photogrammetry and remote sensing > vol 75 (January 2013) . - pp 29 - 39[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 081-2013011 RAB Revue Centre de documentation En réserve L003 Disponible vol 47 n° 12 Tome 1 - December 2009 - Calibration and validation of ALOS sensors (PalSAR, AVNIR-2 and PRISM) and their use for bio-and geophysical parameters retrievals. Part 1 (Bulletin de IEEE Transactions on geoscience and remote sensing) / C. Ruf
[n° ou bulletin]
est un bulletin de IEEE Transactions on geoscience and remote sensing / IEEE Geoscience and remote sensing society (Etats-Unis) (1986 -)
Titre : vol 47 n° 12 Tome 1 - December 2009 - Calibration and validation of ALOS sensors (PalSAR, AVNIR-2 and PRISM) and their use for bio-and geophysical parameters retrievals. Part 1 Type de document : Périodique Auteurs : C. Ruf, Éditeur scientifique ; Geoscience and remote sensing society, Auteur Année de publication : 2009 Importance : 250 p. Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Télédétection
[Termes IGN] Advanced Visible & Near Infrared Radiometer
[Termes IGN] capteur spatial
[Termes IGN] étalonnage
[Termes IGN] PALSAR
[Termes IGN] Panchromatic Remote Sensing Instrument for Stereo Mapping
[Termes IGN] radiomètre
[Termes IGN] validation des donnéesNuméro de notice : 065-0912A Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Numéro de périodique En ligne : http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=5332062&punumber=36 Format de la ressource électronique : URL sommaire Permalink : https://documentation.ensg.eu/index.php?lvl=bulletin_display&id=9558 [n° ou bulletin]Contient
- PALSAR radiometric and geometric calibration / M. Shimada in IEEE Transactions on geoscience and remote sensing, vol 47 n° 12 Tome 1 (December 2009)
- Calibration of PRISM and AVNIR-2 onboard ALOS Daichi / T. Tadono in IEEE Transactions on geoscience and remote sensing, vol 47 n° 12 Tome 1 (December 2009)
Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-09121A RAB Revue Centre de documentation En réserve L003 Disponible Calibration of PRISM and AVNIR-2 onboard ALOS Daichi / T. Tadono in IEEE Transactions on geoscience and remote sensing, vol 47 n° 12 Tome 1 (December 2009)
[article]
Titre : Calibration of PRISM and AVNIR-2 onboard ALOS Daichi Type de document : Article/Communication Auteurs : T. Tadono, Auteur ; M. Shimada, Auteur ; H. Murakami, Auteur Année de publication : 2009 Article en page(s) : pp 4042 - 4050 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Advanced Visible & Near Infrared Radiometer
[Termes IGN] étalonnage géométrique
[Termes IGN] étalonnage radiométrique
[Termes IGN] image ALOS-PRISM
[Termes IGN] Panchromatic Remote Sensing Instrument for Stereo Mapping
[Termes IGN] rayonnement proche infrarougeRésumé : (Auteur) The Advanced Land Observing Satellite [(ALOS); nicknamed ldquoDaichirdquo] was successfully launched on January 24, 2006, and it continues to work very well. This paper describes the calibrations of two optical instruments onboard ALOS, which are the Panchromatic Remote-sensing Instrument for Stereo Mapping (PRISM) and Advanced Visible and Near-Infrared Radiometer type 2 (AVNIR-2). PRISM consists of three panchromatic radiometers and is used to derive a digital surface model (DSM) with high spatial resolution, which is an objective of the ALOS mission. AVNIR-2 has four radiometric bands from blue to near infrared, which are used for investigating regional environment issues such as land-use and land-cover classifications, and disaster monitoring. In this paper, we introduce the calibration and validation plan, methodologies, accuracy assessments of the standard products, image quality evaluations for PRISM and AVNIR-2, and their results. Geometric calibration is important in generating a precise DSM by a stereo pair image of PRISM. The relative geometric calibrations of both PRISM and AVNIR-2 are conducted by evaluating accuracies within one scene and evaluating sensor alignments as absolute calibration. For absolute geometric accuracies, we achieved 8.1 m for nadir-looking images and 9.3 m for forward- and backward-looking images of PRISM; we also achieved 114.2 m for AVNIR-2. PRISM is also radiometrically calibrated both relatively and absolutely. PRISM relative radiometric calibration is accomplished by using acquired images over homogeneous targets, such as oceans, deserts, ice, and snow areas, as well as nighttime observation. Simultaneously observed images with calibrated AVNIR-2 are used for absolute radiometric calibration by cross-calibration. The absolute radiometric accuracy of the PRISM nadir-looking radiometer is similar to that of AVNIR-2. Copyright IEEE Numéro de notice : A2009-492 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2009.2028692 En ligne : https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5256244 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30121
in IEEE Transactions on geoscience and remote sensing > vol 47 n° 12 Tome 1 (December 2009) . - pp 4042 - 4050[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-09121A RAB Revue Centre de documentation En réserve L003 Disponible First images from Japan's Daichi, Advanced Land Observing Satellite / Mathias Lemmens in GIM international, vol 20 n° 5 (May 2006)
[article]
Titre : First images from Japan's Daichi, Advanced Land Observing Satellite Type de document : Article/Communication Auteurs : Mathias Lemmens, Auteur Année de publication : 2006 Article en page(s) : pp 39 - 41 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Advanced Visible & Near Infrared Radiometer
[Termes IGN] capteur spatial
[Termes IGN] image ALOS
[Termes IGN] image ALOS-PRISM
[Termes IGN] PALSAR
[Termes IGN] Panchromatic Remote Sensing Instrument for Stereo Mapping
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) On 30th November 2005 the Japan Aerospace Exploration Agency (JAXA) announced Space Activities Commission (SAC) approval for launch of 'Daichi', Japan's Advanced Land Satellite (ALOS) within a time window of 20th January to 28th February 2006. The satellite was eventually rocketed beyond Earth's atmosphere on 24th January from Tanegashima Space Centre. We present its features and first images from this novel new earth-observation instrument. Numéro de notice : A2006-170 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27897
in GIM international > vol 20 n° 5 (May 2006) . - pp 39 - 41[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 061-06051 RAB Revue Centre de documentation En réserve L003 Disponible