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PALSAR data without ground control points / Penggen Cheng in Geoinformatics, vol 10 n° 6 (01/09/2007)
[article]
Titre : PALSAR data without ground control points Type de document : Article/Communication Auteurs : Penggen Cheng, Auteur Année de publication : 2007 Article en page(s) : pp 36 - 38 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] bande L
[Termes IGN] géoréférencement direct
[Termes IGN] image ALOS
[Termes IGN] image ALOS-PALSAR
[Termes IGN] image radar
[Termes IGN] mosaïquage d'images
[Termes IGN] orthophotoplan numérique
[Termes IGN] orthorectification
[Termes IGN] point d'appui
[Termes IGN] radargrammétrieRésumé : (Auteur) Imagine a fully automated, highly reliable system to produce high-accuracy orthos and mosaics of radar data all over the world. Time-sensitive applications such as oil spills flood monitoring can now access high-accuracy radar orthos as soon as data is available. These applications and more are now possible with the successful operation of the ALOS satellite. Copyright GEOinformatics Numéro de notice : A2007-417 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28780
in Geoinformatics > vol 10 n° 6 (01/09/2007) . - pp 36 - 38[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 262-07061 SL Revue Centre de documentation Revues en salle Disponible High-resolution change estimation of soil moisture using L-band radiometer and Radar observations made during the SMEX02 experiments / U. Narayan in IEEE Transactions on geoscience and remote sensing, vol 44 n° 6 (June 2006)
[article]
Titre : High-resolution change estimation of soil moisture using L-band radiometer and Radar observations made during the SMEX02 experiments Type de document : Article/Communication Auteurs : U. Narayan, Auteur ; V. Lakshmi, Auteur ; Thomas J. Jackson, Auteur Année de publication : 2006 Article en page(s) : pp 1545 - 1554 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] bande L
[Termes IGN] coefficient de rétrodiffusion
[Termes IGN] détection de changement
[Termes IGN] humidité du sol
[Termes IGN] image AIRSAR
[Termes IGN] image ALOS
[Termes IGN] Iowa (Etats-Unis)
[Termes IGN] limite de résolution radiométrique
[Termes IGN] radiomètre à hyperfréquence
[Termes IGN] rugosité du sol
[Termes IGN] simulation numérique
[Termes IGN] Soil Moisture Experiment
[Termes IGN] température de luminanceRésumé : (Auteur) The soil moisture experiments held during June-July 2002 (SMEX02) at lowa demonstrated the potential of the L-band radiometer (PALS) in estimation of near surface soil moisture under dense vegetation canopy conditions. The L-band radar was also shown to be sensitive to near surface soil moisture. However, the spatial resolution of a typical satellite L-band radiometer is of the order of tens of kilometers, which is not sufficient to serve the full range of science needs for land surface hydrology and weather modeling applications. Disaggregation schemes for deriving subpixel estimates of soil moisture from radiometer data using higher resolution radar observations may provide the means for making available global soil moisture observations at a much finer scale. This paper presents a simple approach for estimation of change in soil moisture at a higher (radar) spatial resolution by combining L-band copolarized radar backscattering coefficients and L-band radiometric brightness temperatures. Sensitivity of AIRSAR L-band copolarized channels has been demonstrated by comparison with in situ soil moisture measurements as well as PALS brightness temperatures. The change estimation algorithm has been applied to coincident PALS and AIRSAR datasets acquired during the SMEX02 campaign. Using AIRSAR data aggregated to a 100-m resolution, PALS radiometer estimates of soil moisture change at a 400-m resolution have been disaggregated to 100-m resolution. The effect of surface roughness variability on the change estimation algorithm has been explained using integral equation model (IEM) simulations. A simulation experiment using synthetic data has been performed to analyze the performance of the algorithm over a region undergoing gradual wetting and dry down. Copyright IEEE Numéro de notice : A2006-260 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2006.871199 En ligne : https://doi.org/10.1109/TGRS.2006.871199 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27987
in IEEE Transactions on geoscience and remote sensing > vol 44 n° 6 (June 2006) . - pp 1545 - 1554[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 065-06061 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