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- Study of lever-arm effect using embedded photogrammetry and on-board GPS receiver on UAV for metrological mapping purpose and proposal of a free ground measurements calibration procedure / Mehdi Daakir (2016)
- Exterior orientation of hyperspectral frame images collected with UAV for forest applications / Adilson Berveglieri (2015)
External error modelling with combined model in terrestrial laser scanning / J. Wang in Survey review, vol 48 n° 346 (January 2016)
[article]
Titre : External error modelling with combined model in terrestrial laser scanning Type de document : Article/Communication Auteurs : J. Wang, Auteur ; H. Kutterer, Auteur ; X. Fang, Auteur Année de publication : 2016 Article en page(s) : pp 40 - 50 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] itération
[Termes IGN] modèle de Gauss-Helmert
[Termes IGN] réfraction atmosphérique
[Termes IGN] télémétrie laser sur satellite
[Termes IGN] télémétrie laser terrestreRésumé : (auteur) Terrestrial laser scanning (TLS) is a promising tool in geodetic applications. Data quality of outdoor TLS measurements is considerably limited by external errors caused by atmospheric variations and object related factors. In this study, external models related to atmospheric refraction, beam wander and incidence angle were introduced and integrated into a seven-parameter similarity transformation (7PST) model to compose a combined model. The combined model was rigorously adjusted by an iterative Gauss–Helmert (GH) model primarily to estimate external calibration parameters and transformation parameters simultaneously. In the application on a dam surface, a t-test showed that a significant external calibration parameter was the range scale, which mainly corresponded with the incidence angle model. The precision of estimated representative points was improved by approximately 50% with the proposed method. The presented models show a great potential for detecting external errors and registering multiple scans in outdoor applications. Numéro de notice : A2016-045 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/00396265.2015.1097589 En ligne : https://doi.org/10.1080/00396265.2015.1097589 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79638
in Survey review > vol 48 n° 346 (January 2016) . - pp 40 - 50[article]Marégraphe de Marseille : Contrôle des appareils effectué en mars 2016, version 1 / Alain Coulomb (2016)
Titre : Marégraphe de Marseille : Contrôle des appareils effectué en mars 2016, version 1 Type de document : Rapport Auteurs : Alain Coulomb , Auteur Mention d'édition : Version 1 Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2016 Collection : Publications techniques en géodésie Sous-collection : Comptes rendus num. 28580 Importance : 22 p. Format : 21 x 30 cm Langues : Français (fre) Descripteur : [Termes IGN] contrôle métrologique
[Termes IGN] données marégraphiques
[Termes IGN] étalonnage d'instrument
[Termes IGN] marégraphe
[Termes IGN] Marseille
[Termes IGN] niveau de la mer
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) Ce document est le compte-rendu de l’opération de contrôle du bon fonctionnement des marégraphes de l’observatoire de Marseille effectuée en mars 2016. Note de contenu : 1. Introduction
1.1. Contexte historique et scientifique
1.2. Contexte particulier de la mission de mars 2016
2. Organisation de la mission
2.1. Personnels mobilisés
2.2. Matériel mis en oeuvre
2.3. Conditions matérielles
2.4. Prise en charge de la mission à l’IGN
3. Description des travaux
3.1. Détermination de l’altitude de l’index de la sonde lumineuse
3.2. Mesures à la sonde lumineuse IGN
3.3. Mesures avec la sonde lumineuse du SHOM
4. Conclusion et actions à envisager
5. Références
6. AnnexesNuméro de notice : 19717 Affiliation des auteurs : IGN (2012-2019) Thématique : POSITIONNEMENT Nature : Rapport de mission nature-HAL : Rapport Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84044 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 19717-01 7D Livre SGM K001 Exclu du prêt Documents numériques
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Marégraphe de Marseille : Contrôle des appareils effectué en mars 2016Adobe Acrobat PDF Optimized strategy for the calibration of superconducting gravimeters at the one per mille level / Michel Van Camp in Journal of geodesy, vol 90 n° 1 (January 2016)
[article]
Titre : Optimized strategy for the calibration of superconducting gravimeters at the one per mille level Type de document : Article/Communication Auteurs : Michel Van Camp, Auteur ; Bruno Meurers, Auteur ; Olivier de Viron, Auteur ; Thomas Forbriger, Auteur Année de publication : 2016 Article en page(s) : pp 91- 99 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] étalonnage d'instrument
[Termes IGN] gravimètre absolu
[Termes IGN] gravimètre supraconducteur
[Termes IGN] marée terrestreRésumé : (auteur) This paper reports on different sources of errors that occur in the calibration process of a superconducting gravimeter (SG), determined by comparison with a ballistic absolute gravimeter (AG); some of them have never been discussed in the literature. We then provide methods to mitigate the impact of those errors, to achieve a robust calibration estimate at the http://static-content.springer.com/image/art%3A10.1007%2Fs00190-015-0856-7/MediaObjects/190_2015_856_IEq1_HTML.gif level. We demonstrate that a standard deviation at the level of http://static-content.springer.com/image/art%3A10.1007%2Fs00190-015-0856-7/MediaObjects/190_2015_856_IEq2_HTML.gif can be reached within 48 h by measuring at spring tides and by increasing the AG sampling rate. This is much shorter than what is classically reported in previous empirical studies. Measuring more than 5 days around a tidal extreme does not improve the precision in the calibration factor significantly, as the variation in the error as a function of 1/N−−√ does not apply, considering the decrease in signal amplitude due to the tidal modulation. However, we investigate the precision improvement up to 120 days, which can be useful if an AG is run continuously: at mid-latitude it would require 21 days to ensure a calibration factor at the http://static-content.springer.com/image/art%3A10.1007%2Fs00190-015-0856-7/MediaObjects/190_2015_856_IEq4_HTML.gif level with a 99.7 % confidence interval. We also show that restricting the AG measurement periods to tidal extrema can reduce instrument demand, while this does not affect the precision on the calibration factor significantly. Then, we quantify the effect of high microseismic noise causing aliasing in the AG time series. We eventually discuss the attenuation bias that might be induced by noisy time series of the SG. When experiments are performed at the http://static-content.springer.com/image/art%3A10.1007%2Fs00190-015-0856-7/MediaObjects/190_2015_856_IEq5_HTML.gif level, 7 are needed to ensure that the error in the calibration estimate will be at the 1 per mille level with a 99 % confidence. Numéro de notice : A2016-021 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-015-0856-7 Date de publication en ligne : 25/09/2015 En ligne : https://doi.org/10.1007/s00190-015-0856-7 Format de la ressource électronique : Url article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79469
in Journal of geodesy > vol 90 n° 1 (January 2016) . - pp 91- 99[article]Sentinel-2A image quality commissioning phase final results: geometric calibration and performances / Florie Languille (2016)
Titre : Sentinel-2A image quality commissioning phase final results: geometric calibration and performances Type de document : Article/Communication Auteurs : Florie Languille, Auteur ; Angélique Gaudel, Auteur ; Cécile Dechoz, Auteur ; Daniel Greslou, Auteur ; Françoise de Lussy, Auteur ; Thierry Trémas, Auteur ; Vincent Poulain, Auteur ; Stéphane Massera , Auteur Editeur : Washington : Society of Photo-Optical Instrumentation Engineers SPIE Année de publication : 2016 Collection : SPIE Proceedings num. 10000 Conférence : SPIE Remote Sensing 2016, Sensors, Systems, and Next-Generation Satellites XX 26/09/2016 29/09/2016 Edimbourg Royaume-Uni Proceedings SPIE Note générale : bibliographie
in Sensors, Systems, and Next-Generation Satellites XXLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] étalonnage géométrique
[Termes IGN] image Sentinel-MSI
[Termes IGN] qualité d'image
[Termes IGN] test de performanceRésumé : (auteur) In the frame of the Copernicus program of the European Commission, Sentinel-2 offers multispectral high-spatial-resolution optical images over global terrestrial surfaces. In cooperation with ESA, the Centre National d’Etudes Spatiales (CNES) is in charge of the image quality of the project, and so ensures the CAL/VAL commissioning phase during the months following the launch. Sentinel-2 is a constellation of 2 satellites on a polar sun-synchronous orbit with a revisit time of 5 days (with both satellites), a high field of view - 290km, 13 spectral bands in visible and shortwave infrared, and high spatial resolution - 10m, 20m and 60m. The Sentinel-2 mission offers a global coverage over terrestrial surfaces. The satellites acquire systematically terrestrial surfaces under the same viewing conditions in order to have temporal images stacks. The first satellite was launched in June 2015. Following the launch, the CAL/VAL commissioning phase is then lasting during 6 months for geometrical calibration. This paper will point on observations and results seen on Sentinel-2 images during commissioning phase. It will provide explanations about Sentinel-2 products delivered with geometric corrections. This paper will detail calibration sites, and the methods used for geometrical parameters calibration and will present linked results. The following topics will be presented: viewing frames orientation assessment, focal plane mapping for all spectral bands, results on geolocation assessment, and multispectral registration. There is a systematic images recalibration over a same reference which is a set of S2 images produced during the 6 months of CAL/VAL. This set of images will be presented as well as the geolocation performance and the multitemporal performance after refining over this ground reference. Numéro de notice : C2016-043 Affiliation des auteurs : IGN+Ext (2012-2019) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1117/12.2236313 Date de publication en ligne : 14/12/2016 En ligne : https://doi.org/10.1117/12.2236313 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91856 Study of lever-arm effect using embedded photogrammetry and on-board GPS receiver on UAV for metrological mapping purpose and proposal of a free ground measurements calibration procedure / Mehdi Daakir (2016)PermalinkThe Minkowski approach for choosing the distance metric in geographically weighted regression / B. Lu in International journal of geographical information science IJGIS, vol 30 n° 1-2 (January - February 2016)PermalinkUncertainty modelling and quality control for spatial data / Wenzhong Shi (2016)PermalinkDevelopment, calibration and evaluation of a portable and direct georeferenced laser scanning system for kinematic 3D mapping / Erik Heinz in Journal of applied geodesy, vol 9 n° 4 (December 2015)PermalinkMulti-GNSS as a combination of GPS, GLONASS and Beidou measurements carried out in real time / Zbigniew Siejka in Artificial satellites, vol 50 n° 4 (December 2015)PermalinkImproved wide-angle, fisheye and omnidirectional camera calibration / Steffen Urban in ISPRS Journal of photogrammetry and remote sensing, vol 108 (October 2015)PermalinkLégitimisation et suivi de la performance / Laurent Polidori in Géomètre, n° 2129 (octobre 2015)PermalinkPolygonal clustering analysis using multilevel graph-partition / Wanyi Wang in Transactions in GIS, vol 19 n° 5 (October 2015)PermalinkAnalysis of different methods for 3D reconstruction of natural surfaces from parallel-axes UAV images / Annette Eltner in Photogrammetric record, vol 30 n° 151 (September - November 2015)PermalinkMatérialisation de cubes de données par des partitions d’ensembles de n-uplets / Frédéric Dumonceaux in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 20 n° 5 (septembre - octobre 2015)Permalink