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Estimation du volume de bois exploitable en montagne par scanner laser aeoporté (Lidar) / Nicolas Clouet in Géomatique expert, n° 70 (01/09/2009)
[article]
Titre : Estimation du volume de bois exploitable en montagne par scanner laser aeoporté (Lidar) Type de document : Article/Communication Auteurs : Nicolas Clouet, Auteur ; Jean-Matthieu Monnet, Auteur ; Frédéric Berger, Auteur Année de publication : 2009 Article en page(s) : pp 32 - 37 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] bois
[Termes IGN] carte forestière
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] estimation statistique
[Termes IGN] forêt
[Termes IGN] montagne
[Termes IGN] outil d'aide à la décision
[Termes IGN] sylviculture
[Termes IGN] télémétrie laser aéroportéRésumé : (documentaliste) Cet article présente un moyen de cartographier les forêts exploitables dans des zones peu accessibles. Grâce aux traitements des données LIDAR, les différentes phases d'approches du terrain sont simplifiées. Numéro de notice : A2009-356 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29986
in Géomatique expert > n° 70 (01/09/2009) . - pp 32 - 37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 265-09051 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P000634 RAB Revue Nogent-sur-Vernisson En réserve L003 Exclu du prêt Systematic biases in DORIS-derived geocenter time series related to solar radiation pressure mis-modeling / Marie-Line Gobinddass in Journal of geodesy, vol 83 n° 9 (September 2009)
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Titre : Systematic biases in DORIS-derived geocenter time series related to solar radiation pressure mis-modeling Type de document : Article/Communication Auteurs : Marie-Line Gobinddass , Auteur ; Pascal Willis , Auteur ; Olivier de Viron, Auteur ; Ant Sibthorpe, Auteur ; Nikita P. Zelensky, Auteur ; J.C. Ries, Auteur ; Rémi Ferland, Auteur ; Yoaz E. Bar-Sever, Auteur ; Michel Diament , Auteur Année de publication : 2009 Article en page(s) : pp 849 - 858 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] données DORIS
[Termes IGN] erreur systématique
[Termes IGN] rayonnement solaire
[Termes IGN] série temporelleRésumé : (auteur) As any satellite geodesy technique, DORIS can monitor geocenter variations associated to mass changes within the Earth–Atmosphere–Continental hydrosphere–Oceans system. However, especially for the Z-component, corresponding to a translation of the Earth along its rotation axis, the estimated geocenter is usually affected by large systematic errors of unknown cause. By reprocessing old DORIS data, and by analyzing single satellite solutions in the frequency domain, we show that some of these errors are satellite-dependent and related to the current DORIS orbit determination strategy. In particular, a better handling of solar pressure radiation effects on SPOT-2 and TOPEX satellites is proposed which removes a large part of such artifacts. By empirically multiplying the current solar pressure model with a single coefficient (1.03 for TOPEX/Poseidon after 1993.57, and 0.96 before; and 1.08 for SPOT-2) estimated over a long time period, we can improve the measurement noise of the Z-geocenter component from 47.5 to 30.4 mm for the RMS and from 35 to 6 mm for the amplitude of the annual signal. However, the estimated SRP coefficient for SPOT-2 presents greater temporal variability, indicating that a new, dedicated solar radiation pressure model is still needed for precise geodetic applications. In addition, for the TOPEX satellite, a clear discontinuity of unknown cause is also detected on July 27, 1993. Numéro de notice : A2009-599 Affiliation des auteurs : LAREG+Ext (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-009-0303-8 Date de publication en ligne : 24/01/2009 En ligne : https://doi.org/10.1007/s00190-009-0303-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102417
in Journal of geodesy > vol 83 n° 9 (September 2009) . - pp 849 - 858[article]Accuracy assessment of the GPS-based slant total electron content / C. Brunini in Journal of geodesy, vol 83 n° 8 (August 2009)
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Titre : Accuracy assessment of the GPS-based slant total electron content Type de document : Article/Communication Auteurs : C. Brunini, Auteur ; F. Azpilicueta, Auteur Année de publication : 2009 Article en page(s) : pp 773 - 785 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] calibrage
[Termes IGN] erreur systématique
[Termes IGN] étalonnage d'instrument
[Termes IGN] ionosphère
[Termes IGN] positionnement par GPS
[Termes IGN] teneur totale en électronsRésumé : (Auteur) The main scope of this research is to assess the ultimate accuracy that can be achieved for the slant total electron content (sTEC) estimated from dual-frequency global positioning system (GPS) observations which depends, primarily, on the calibration of the inter-frequency biases (IFB). Two different calibration approaches are analyzed: the so-called satellite-by-satellite one, which involves levelling the carrier-phase to the code-delay GPS observations and then the IFB estimation; and the so-called arc-by-arc one, which avoids the use of code-delay observations but requires the estimation of arc-dependent biases. Two strategies are used for the analysis: the first one compares calibrated sTEC from two co-located GPS receivers that serve to assess the levelling errors; and the second one, assesses the model error using synthetic data free of calibration error, produced with a specially developed technique. The results show that the arc-by-arc calibration technique performs better than the satellite-by-satellite one for mid-latitudes, while the opposite happens for low-latitudes. Copyright Springer Numéro de notice : A2009-326 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-008-0296-8 En ligne : https://doi.org/10.1007/s00190-008-0296-8 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29956
in Journal of geodesy > vol 83 n° 8 (August 2009) . - pp 773 - 785[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 266-09071 SL Revue Centre de documentation Revues en salle Disponible Airborne Lidar: in-flight accuracy estimation / Philipp Schaer in GPS world, vol 20 n° 8 (August 2009)
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Titre : Airborne Lidar: in-flight accuracy estimation Type de document : Article/Communication Auteurs : Philipp Schaer, Auteur ; Jan Skaloud, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 37 - 41 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] données lidar
[Termes IGN] estimation statistique
[Termes IGN] précision du positionnement
[Termes IGN] qualité des données
[Termes IGN] télémétrie laser aéroporté
[Termes IGN] traitement automatique de donnéesRésumé : (Auteur) This article describes new developments in an airborne mapping system described in the May 2006 issue, "AN EYE FOR LANDSCAPES: RAPID AERIAL MAPPING WITH HANDHELD SENSORS," by Jan Skaloud and co-authors. The portable system offers fast deployment with no recalibration and maps both vertical and horizontal features while maintaining optimal flight parameters. The geo-referenced image and 3D point-cloud data can be processed into digital terrain models, digital surface models, and automatically derived 3D city models. Copyright Questex Media Group Numéro de notice : A2009-308 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29938
in GPS world > vol 20 n° 8 (August 2009) . - pp 37 - 41[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 067-09081 SL Revue Centre de documentation Revues en salle Disponible An absolute calibration site for radar altimeters in the continental domain: Lake Issykkul in Central Asia / J.F. Cretaux in Journal of geodesy, vol 83 n° 8 (August 2009)
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Titre : An absolute calibration site for radar altimeters in the continental domain: Lake Issykkul in Central Asia Type de document : Article/Communication Auteurs : J.F. Cretaux, Auteur ; Stéphane Calmant, Auteur ; V. Romanovski, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 723 - 735 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] altimètre radar
[Termes IGN] Asie centrale
[Termes IGN] erreur instrumentale
[Termes IGN] erreur systématique
[Termes IGN] étalonnage d'instrumentRésumé : (Auteur) Altimetry missions such as Topex/Poseidon, Jason-1, GFO and ENVISAT have been widely used in the continental domain over lakes, rivers and wetland although they were mostly dedicated to oceanic studies. Knowledge of the instrumental biases is a key issue. Numerous sites have been dedicated to calibration purposes, either in the oceanic domain (Harvest offshore platform in California, Corsica, Bass Strait in Australia) or over lakes (Lake Erie in United States). A new site (Lake Issykkul in Kirghizstan) is proposed for calibration in the continental domain. This lake is covered by past (T/P) and current radar altimetry satellites (Jason-1, T/P, GFO, and ENVISAT). Several in situ water levels and local meteorological variables are available at the site. Located in a mountainous area, it offers an opportunity for calibration far away from all other existing sites and very different environment contexts. Two GPS campaigns have been conducted on the lake in 2004 and in 2005. They consisted of cruises with stations installed onboard a boat following the satellite ground tracks, and onshore settings. This enabled estimating a bias for each altimeter and each tracking algorithm available. Biases obtained for Envisat, GFO, T/P and Jason-1 using the default ocean tracker (respectively, 48.1 + 6.6, 7.5 + 4.0, 0 + 4.3 and 7.0 + 5.5 cm) agree with biases published at the other calibration sites. For Jason-1, there is a significant disagreement with results obtained in the ocean field (7 cm instead of 13 cm) but is coherent with bias obtained on the Lake Erie site. Erroneous estimates of the sea state bias correction from non-oceanic-like waveforms is discussed as a possible explanation. Errors in the ionospheric, wet and dry tropospheric corrections for the continental domain are also highlighted and quantified. Copyright Springer Numéro de notice : A2009-324 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 0.1007/s00190-008-0285-y En ligne : https://doi.org/10.1007/s00190-008-0285-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29954
in Journal of geodesy > vol 83 n° 8 (August 2009) . - pp 723 - 735[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 266-09071 SL Revue Centre de documentation Revues en salle Disponible Verification of NWP model analyses and radiosonde humidity data with GPS precipitable water vapor estimates during AMMA / Olivier Bock in Weather and Forecasting, vol 24 n° 4 (August 2009)PermalinkStreet hierarchies: a minority of streets account for a majority of traffic flow / Bin Jiang in International journal of geographical information science IJGIS, vol 23 n° 7-8 (july 2009)PermalinkUse Markov random fields for automatic cloud-shadow detection on high resolution / Sylvie Le Hégarat-Mascle in ISPRS Journal of photogrammetry and remote sensing, vol 64 n° 4 (July - August 2009)PermalinkClassification through consultation: public views of the geography of the e-society / Paul A. Longley in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)PermalinkA closer look at the Tau Criterion as a method of blunder detection within a differential leveling network least squares adjustment / J. Gabor in SaLIS Surveying and land information science, vol 69 n° 2 (Summer 2009)PermalinkTesting the stereoscopic precision of a large-format digital camera / Benjamin Arias in Photogrammetric record, vol 24 n° 126 (June - August 2009)PermalinkRadiosonde humidity bias correction over the West African region for the special AMMA reanalysis at ECMWF / Anna Agustí‐Panareda in Quarterly Journal of the Royal Meteorological Society, vol 135 n° 640 (April 2009 part A)PermalinkPermalinkAutomatic estimation of fine terrain models from multiple high-resolution satellite images / Nicolas Champion (2009)PermalinkAutonomous integrity: an error isotropy-based approach for multiple fault conditions / M. Azaola-Saenz in Inside GNSS, Vol 4 n° 1 (January-Fabruary 2009)PermalinkCalibrage de quelques modèles de géoide dans la zone des collines Albanes (Rome) / Valerio Baiocchi in Géomatique expert, n° 66 (01/01/2009)PermalinkA kernel density estimation method for networks, its computational method and a GIS-based tool / Atsuyuki Okabe in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)PermalinkPrecise point positioning with GPS: A new approach for positioning, atmospheric studies, and signal analysis / Rodrigo Figueiredo Leandro (2009)PermalinkProblèmes inverses en imagerie et en vision, 1. Volume 1 / A. Mohammad-Djafari (2009)PermalinkProblèmes inverses en imagerie et en vision, 2. Volume 2 / A. Mohammad-Djafari (2009)PermalinkRemote sensing of soil salinization / G. Metternicht (2009)PermalinkPermalinkSensitivity analysis of spatial models / Linda Lilburne in International journal of geographical information science IJGIS, vol 23 n° 1-2 (january 2009)PermalinkPermalinkWater vapour intercomparison effort in the frame of the Convective and Orographically‐ induced Precipitation Study / Rohini Bhawar (2009)PermalinkAssessing geometric reliability of corrected images from very high resolution satellites / M. Aguilar in Photogrammetric Engineering & Remote Sensing, PERS, vol 74 n° 12 (December 2008)PermalinkDMC geometry analysis and virtual image characterisation / R. Alamus in Photogrammetric record, vol 23 n° 124 (December 2008 - February 2009)PermalinkPermalinkThe impact of errors in polar motion and nutation on UT1 determinations from VLBI Intensive observations / Axel Nothnagel in Journal of geodesy, vol 82 n° 12 (December 2008)PermalinkWater Modeler: a component of a coastal zone decision support system to generate flood-risk maps from storm surge events and sea-level rise / T.L. Webster in Geomatica, vol 62 n° 4 (December 2008)PermalinkWest African Monsoon observed with ground-based GPS receivers during African Monsoon Multidisciplinary Analysis (AMMA) / Olivier Bock in Journal of geophysical research : Atmospheres, vol 113 n° D21 (16 November 2008)PermalinkCorrection of humidity bias for Vaïsala RS80 sondes during AMMA 2006 Observing Period / Mathieu Nuret in Journal of Atmospheric and Oceanic Technology, vol 25 n° 11 (November 2008)PermalinkFormulation of distortion error for the line-of-sight (LOS) vector adjustment model and its role in restitution of SPOT imagery / Hyung-Sup Jung in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 6 (November - December 2008)PermalinkGeoreferencing locality descriptions and computing associated uncertainty using a probabilistic approach / Q. Guo in International journal of geographical information science IJGIS, vol 22 n° 10 (october 2008)PermalinkModelling house unit density from land cover metrics: a Midwestern US example / P. Hardin in Geocarto international, vol 23 n° 5 (October - November 2008)PermalinkDevelopment and testing of a generic sensor model for pushbroom satellite imagery / T. Weser in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkOrientation and self-calibration of ALOS PRISM imagery / S. Kocaman in Photogrammetric record, vol 23 n° 123 (September - November 2008)PermalinkThe Bayesian detection of discontinuities in a polynomial regression and its application to the cycle-slip problem / M.C. DE Lacy in Journal of geodesy, vol 82 n° 9 (September 2008)PermalinkThe effect of tropospheric delay on GPS height differences along the Equator / J. Dodo in SaLIS Surveying and land information science, vol 68 n° 3 (September 2008)PermalinkMonitoring post-mining subsidence in the North-Pas-de-Calais coal basin (France): interferometric SAR results and levelling / Daniel Raucoules in Geocarto international, vol 23 n° 4 (August - September 2008)PermalinkOn weighted total least-squares adjustment for linear regression / Burkhard Schaffrin in Journal of geodesy, vol 82 n° 7 (July 2008)PermalinkAccuracy assessment of Lidar-derived digital elevation models / F. Aguilar in Photogrammetric record, vol 23 n° 122 (June - August 2008)PermalinkAutomatic building extraction from DEMs using an object approach and application to the 3D-city modeling / Florent Lafarge in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 3 (May - June 2008)PermalinkA GNSS odometer: how far have we come? / Andreas Wieser in GPS world, vol 19 n° 4 (April 2008)PermalinkSeeking the Pareto front for multiobjective spatial optimization problems / B. Huang in International journal of geographical information science IJGIS, vol 22 n° 4-5 (april 2008)PermalinkEstimation automatique de l'orientation relative : une approche directe basée sur la résolution de systèmes polynomiaux multivariables / Mahzad Kalantari in Revue Française de Photogrammétrie et de Télédétection, n° 189 (Mars 2008)PermalinkA method to test differences between additional parameter sets with a case study in terrestrial laser scanner self-calibration stability analysis / Derek D. Lichti in ISPRS Journal of photogrammetry and remote sensing, vol 63 n° 2 (March - April 2008)PermalinkA robust biased estimator for exterior orientation of linear array pushbroom satellite imagery / Y. Zhang in Geomatica, vol 62 n° 1 (March 2008)PermalinkTexture feature fusion with neighborhood oscillating tabu search for high resolution image classification / L. 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