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Finding the right algorithm: low-cost, single-frequency GPS-GLONASS RTK for road users / Sébastien Carcanague in Inside GNSS, vol 8 n° 6 (November - December 2013)
[article]
Titre : Finding the right algorithm: low-cost, single-frequency GPS-GLONASS RTK for road users Type de document : Article/Communication Auteurs : Sébastien Carcanague, Auteur ; Willy Vigneau, Auteur ; Olivier Julien, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : 11 p. ; pp 70 - 80 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] filtre de Kalman
[Termes IGN] milieu urbain
[Termes IGN] navigation automobile
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] récepteur GNSS
[Termes IGN] récepteur monofréquence
[Termes IGN] test de performanceRésumé : (Editeur) Urban navigation would greatly benefit from higher accuracy and more reliable positioning, especially in signal-challenged environments. Multiconstellation real-time kinematic RTK techniques can contribute to a solution, but typically they require expensive equipment. A team of research engineers tested a new algorithm on low-cost consumer GNSS receiver with promising results. Numéro de notice : A2013-726 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32862
in Inside GNSS > vol 8 n° 6 (November - December 2013) . - 11 p. ; pp 70 - 80[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 159-2013061 SL Revue Centre de documentation Revues en salle Disponible Documents numériques
en open access
a2013-726_finding_the_right_algorithm_carcanague.pdfAdobe Acrobat PDF Assessing the performance of linear feature models : An approach to computational inference / Eufenio Y. Arima in Photogrammetric Engineering & Remote Sensing, PERS, vol 79 n° 9 (September 2013)
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Titre : Assessing the performance of linear feature models : An approach to computational inference Type de document : Article/Communication Auteurs : Eufenio Y. Arima, Auteur ; Robert T. Walker, Auteur ; Dante G. Vergara, Auteur Année de publication : 2013 Article en page(s) : pp 847 - 855 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] inférence statistique
[Termes IGN] modèle de simulation
[Termes IGN] objet géographique linéaire
[Termes IGN] réseau routier
[Termes IGN] test de performanceRésumé : (Auteur) A methodology for judging the performance of simulation models that involve linear features is presented taking as its test case a model that produces logging road networks. The approach combines existing methods of accuracy assessment, based on the so-called epsilon band, with the principle of statistical inference. This requires adapting neutral models from landscape ecology to generate a bootstrapped probability distribution reflecting the probabilistic characteristics of sto-chastic networks. The distribution is then used for inferential hypothesis testing, taking as its "null" hypothesis that a net-work has been produced randomly. The assessment method-ology is used to evaluate the road network simulation model under six different parameterizations. Results are compared to findings obtained by the use of fuzzy similarity metrics. The paper argues that the epsilon band method provides confi-dence that model performance departs significantly from a randomized process, and that conclusions are free of at least one class of spurious results. Numéro de notice : A2013-507 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.14358/PERS.79.9.847 En ligne : https://doi.org/10.14358/PERS.79.9.847 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32645
in Photogrammetric Engineering & Remote Sensing, PERS > vol 79 n° 9 (September 2013) . - pp 847 - 855[article]The stability of tide gauges in the south Pacific determined from multiepoch geodetic levelling, 1992 to 2010 / Manoj Nilesh Deo in Marine geodesy, vol 36 n° 3 (September - November 2013)
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Titre : The stability of tide gauges in the south Pacific determined from multiepoch geodetic levelling, 1992 to 2010 Type de document : Article/Communication Auteurs : Manoj Nilesh Deo, Auteur ; Ramesh Govind, Auteur ; Ahmed El-Mowafy, Auteur Année de publication : 2013 Article en page(s) : pp 261 - 284 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] analyse diachronique
[Termes IGN] Cook (îles)
[Termes IGN] données marégraphiques
[Termes IGN] marée océanique
[Termes IGN] niveau moyen des mers
[Termes IGN] nivellement par GPS
[Termes IGN] Pacifique Sud
[Termes IGN] repère de nivellement
[Termes IGN] Salomon (îles)
[Termes IGN] test de performance
[Termes IGN] Vanuatu
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) Tide gauge data is important for determining global or local sea level rise with respect to a global geocentric reference frame. Data from repeated precise levelling connections between the tide gauges and a series of coastal and inland benchmarks, including Continuous GPS (CGPS) benchmarks, are used to determine the stability of tide gauges at 12 locations in the South Pacific. The method for determining this stability is based on a constant velocity model which minimises the net movement amongst a set of datum benchmarks surveyed since the installation of the tide gauges. When assessed at a 95% confidence interval, and with the exception of the Solomon Islands, none of the tide gauges were found to be in motion relative to their CGPS benchmarks. The Solomon Islands estimate is considered to be unreliable since the CGPS benchmark was recently established and has been surveyed fewer than three times. In Tonga and Cook Islands, the tide gauges were found to be disturbed or affected by survey errors whereas the Vanuatu results were affected by earthquakes. Numéro de notice : A2013-711 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1080/01490419.2013.786003 Date de publication en ligne : 18/03/2016 En ligne : https://doi.org/10.1080/01490419.2013.786003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32847
in Marine geodesy > vol 36 n° 3 (September - November 2013) . - pp 261 - 284[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 230-2013031 RAB Revue Centre de documentation En réserve L003 Disponible Geometric analysis and self-calibration of ADS40 imagery / Sara Gonzalez in Photogrammetric record, vol 28 n° 142 (June - August 2013)
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Titre : Geometric analysis and self-calibration of ADS40 imagery Type de document : Article/Communication Auteurs : Sara Gonzalez, Auteur ; Javier Gomez-Lahoz, Auteur ; Diego Gonzalez-Aguilera, Auteur ; Benjamin Arias, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 145 - 161 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] aérotriangulation
[Termes IGN] auto-étalonnage
[Termes IGN] capteur en peigne
[Termes IGN] Espagne
[Termes IGN] modèle géométrique de prise de vue
[Termes IGN] test de performanceRésumé : (Auteur) The increasing role of pushbroom cameras in large photogrammetric projects has fostered international interest in achieving a sound knowledge of this device. In addition, the classic software tools, implemented for frame cameras, need to be adapted to cope with modified aerial triangulation and self-calibration procedures. This contribution presents the results obtained from the geometrical analysis and self-calibration of the second-generation pushbroom ADS40 camera, the SH52. For this purpose, a testfield was designed and built on the outskirts of Ávila, Spain and two blocks, flown at different heights, were imaged. A wide network of well-defined control and check points was observed in order to provide a thorough assessment of the accuracy and reliability of the camera. Empirical analysis of a variety of models within aerial triangulation as well as the use of internal camera parameters has led to an evaluation of the camera's performance in a real-life environment. Numéro de notice : A2013-333 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12017 Date de publication en ligne : 26/04/2013 En ligne : https://doi.org/10.1111/phor.12017 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32471
in Photogrammetric record > vol 28 n° 142 (June - August 2013) . - pp 145 - 161[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-2013021 RAB Revue Centre de documentation En réserve L003 Disponible Shadow detection in very high spatial resolution aerial images: A comparative study / Karine R.M. Adeline in ISPRS Journal of photogrammetry and remote sensing, vol 80 (June 2013)
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Titre : Shadow detection in very high spatial resolution aerial images: A comparative study Type de document : Article/Communication Auteurs : Karine R.M. Adeline, Auteur ; M. Chen, Auteur ; Xavier Briottet , Auteur ; S.K. Pan, Auteur ; Nicolas Paparoditis , Auteur Année de publication : 2013 Article en page(s) : pp 21 - 38 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] analyse comparative
[Termes IGN] canyon urbain
[Termes IGN] détection d'ombre
[Termes IGN] image hyperspectrale
[Termes IGN] image multibande
[Termes IGN] rayonnement lumineux
[Termes IGN] rayonnement proche infrarouge
[Termes IGN] seuillage d'image
[Termes IGN] simulation numérique
[Termes IGN] test de performanceRésumé : (Auteur) Automatic shadow detection is a very important pre-processing step for many remote sensing applications, particularly for images acquired with high spatial resolution. In complex urban environments, shadows may occupy a significant portion of the image. Ignoring these regions would lead to errors in various applications, such as atmospheric correction and classification. To better understand the radiative impact of shadows, a physical study was conducted through the simulation of a synthetic urban canyon scene. Its results helped to explain the most common assumptions made on shadows from a physical point of view in the literature. With this understanding, state-of-the-art methods on shadow detection were surveyed and categorized into six classes: histogram thresholding, invariant color models, object segmentation, geometrical methods, physics-based methods, unsupervised and supervised machine learning methods. Among them, some methods were selected and tested on a large dataset of multispectral and hyperspectral airborne images with high spatial resolution. The dataset chosen contains a large variety of typical occidental urban scenes. The results were compared based on accurate reference shadow masks. In these experiments, histogram thresholding on RGB and NIR channels performed the best with an average accuracy of 92.5%, followed by physics-based methods, such as Richter’s method with 90.0%. Finally, this paper analyzes and discusses the limits of these algorithms, concluding with some recommendations for shadow detection. Numéro de notice : A2013-296 Affiliation des auteurs : LASTIG MATIS+Ext (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2013.02.003 Date de publication en ligne : 03/04/2013 En ligne : http://dx.doi.org/10.1016/j.isprsjprs.2013.02.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32434
in ISPRS Journal of photogrammetry and remote sensing > vol 80 (June 2013) . - pp 21 - 38[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2013061 RAB Revue Centre de documentation En réserve L003 Disponible GNSS test standards for cellular location / Peter Anderson in GPS world, vol 24 n° 5 (May 2013)PermalinkContribution à la mise en place d'un SIG fédérateur des données géographiques pour l'aménagement et les infrastructures / Mustapha Mimouni (2013)PermalinkEtude d'opportunité de développement sur le marché de la topographie des réseaux / Soufiane Laqbayli (2013)PermalinkIntegration of galileo system in a positioning software, and estimation of Galileo system benefits / Laurane Boulanger (2013)PermalinkPermalinkA flexible mathematical method for calibration in digital aerial photogrammetry / Rongfu Tang in Photogrammetric Engineering & Remote Sensing, PERS, vol 78 n° 10 (October 2012)PermalinkCoherence evaluation of TanDEM-X interferometric data / M. Martone in ISPRS Journal of photogrammetry and remote sensing, vol 73 (September 2012)PermalinkCapturing sail shape in a wind tunnel environment / M. Smith in Photogrammetric record, vol 27 n° 138 (June - August 2012)PermalinkA comparison between WCS and OPeNDAP for making model results and data products available through the Internet / F. Baart in Transactions in GIS, vol 16 n° 2 (April 2012)PermalinkEin modulares Simulationskonzept zur Evaluierung von Positionssensoren sowie Filter- und Regelalgorithmen am Beispiel des automatisierten Strassenbaus / A. Beetz (2012)Permalink