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positionnement cinématique en temps réelSynonyme(s)RTK |
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Ground-based phase wind-up and its application in yaw angle determination / M. Cai in Journal of geodesy, vol 90 n° 8 (August 2016)
[article]
Titre : Ground-based phase wind-up and its application in yaw angle determination Type de document : Article/Communication Auteurs : M. Cai, Auteur ; W. Chen, Auteur ; D. Dong, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 757 – 772 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] antenne GNSS
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] positionnement ponctuel précis
[Termes IGN] précision du positionnement
[Termes IGN] récepteurRésumé : (auteur) Ground-based phase wind-up effect (GPWU) is caused by the rotation of receiving antenna. It had been studied and applied in rapidly rotation platforms, such as sounding rocket, guided missile and deep space exploration. In Global Navigation Satellite System high accuracy positioning applications, however, most studies treated it as an error source and focused on eliminating this effect in Precision Point Positioning and Real Time Kinematic (RTK) positioning. The GPWU effect is also sensitive to the rotational status of the antenna, in particular the yaw angle variations. In this paper we explore the feasibility of yaw angle determination of relatively slow rotation platforms based on the GPWU effect. We use the geometry-free carrier phase observations from a RTK base and a moving station receivers to estimate the cumulative yaw angle of the moving platform. Several experiments, including rotating platform tests, vehicle and shipborne tests were carried out. The cumulative errors of rotating platform tests are under 0.38∘, indicating good long-term accuracy of the GPWU determined yaw angle. But the RMS are in a range of 11.98∘and 17.39∘, indicating the errors, such as multipath effect, are not negligible and should be further investigated. The RMS of vehicle and shipborne tests using a base station of 9–11 km are 24.77∘ and 23.66∘. In order to evaluate the influence of the differential ionospheric delay, another vehicle test was carried out using a base station located less than 1 km to the vehicle. The RMS reduces to 15.11∘, which gains 39.00 % improvement than before, and demonstrates that the differential ionospheric delay even from a few kilometers long baseline still cannot be neglected. These tests validate the feasibility of GPWU for real-time yaw angle determination. Since this method is able to determine the yaw angle with a minimum one satellite, such a unique feature provides potential applications for attitude determination in the environment with poor sky visibility. Numéro de notice : A2016-506 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-016-0908-7 Date de publication en ligne : 10/05/2016 En ligne : https://doi.org/10.1007/s00190-016-0908-7 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81530
in Journal of geodesy > vol 90 n° 8 (August 2016) . - pp 757 – 772[article]Spatial accuracy of UAV- derived orthoimagery and topography: Comparing photogrammetric models processed with direct geo-referencing and ground control points / Chris H. Hugenholtz in Geomatica, vol 70 n° 1 (March 2016)
[article]
Titre : Spatial accuracy of UAV- derived orthoimagery and topography: Comparing photogrammetric models processed with direct geo-referencing and ground control points Type de document : Article/Communication Auteurs : Chris H. Hugenholtz, Auteur ; Owen Brown, Auteur ; Jordan Walker, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 21 - 30 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] acquisition de données
[Termes IGN] analyse comparative
[Termes IGN] capteur aérien
[Termes IGN] drone
[Termes IGN] géoréférencement direct
[Termes IGN] point d'appui
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] positionnement inertiel
[Termes IGN] positionnement par GNSS
[Termes IGN] positionnement par GPS
[Termes IGN] qualité des données
[Termes IGN] réalité de terrain
[Termes IGN] topographieRésumé : (auteur) Mapping with unmanned aerial vehicles (UAVs) typically involves the deployment of ground control points (GCPs) to georeference the images and topographic model. An alternative approach is direct georeferencing, whereby the onboard Global Navigation Satellite System (GNSS) and inertial measurement unit are used without GCPs to locate and orient the data. This study compares the spatial accuracy of these approaches using two nearly identical UAVs. The onboard GNSS is the one difference between them, as one vehicle uses a survey-grade GNSS/RTK receiver (RTK UAV), while the other uses a lower-grade GPS receiver (non-RTK UAV). Field testing was performed at a gravel pit, with all ground measurements and aerial surveying completed on the same day. Three sets of orthoimages and DSMs were produced for comparing spatial accuracies: two sets were created by direct georeferencing images from the RTK UAV and non-RTK UAV and one set was created by using GCPs during the external orientation of the non-RTK UAV images. Spatial accuracy was determined from the horizontal (X,Y) and vertical (Z) residuals and root-mean-square-errors (RMSE) relative to 17 horizontal and 180 vertical check points measured with a GNSS/RTK base station and rover. For the two direct georeferencing datasets, the horizontal and vertical accuracy improved substantially with the survey-grade GNSS/RTK receiver onboard the RTK UAV, effectively reducing the RMSE values in X, Y and Z by 1 to 2 orders of magnitude compared to the lower grade GPS receiver onboard the non-RTK UAV. Importantly, the horizontal accuracy of the RTK UAV data processed via direct georeferencing was equivalent to the horizontal accuracy of the non-RTK UAV data processed with GCPs, but the vertical error of the DSM from the RTK UAV data was 2 to 3 times greater than the DSM from the non-RTK data with GCPs. Overall, results suggest that direct georeferencing with the RTK UAV can achieve horizontal accuracy comparable to that obtained with a network of GCPs, but for topographic measurements requiring the highest achievable accuracy, researchers and practitioners should use GCPs. Numéro de notice : A2016-433 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article DOI : 10.5623/cig2016-102 En ligne : https://doi.org/10.5623/cig2016-102 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81330
in Geomatica > vol 70 n° 1 (March 2016) . - pp 21 - 30[article]On the estimability of parameters in undifferenced, uncombined GNSS network and PPP-RTK user models by means of S-system theory / Dennis Odijk in Journal of geodesy, vol 90 n° 1 (January 2016)
[article]
Titre : On the estimability of parameters in undifferenced, uncombined GNSS network and PPP-RTK user models by means of S-system theory Type de document : Article/Communication Auteurs : Dennis Odijk, Auteur ; Baocheng Zhang, Auteur ; Amir Khodabandeh, Auteur ; et al., Auteur Année de publication : 2016 Article en page(s) : pp 15 - 44 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] constellation GNSS
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] positionnement ponctuel précis
[Termes IGN] temps réel
[Termes IGN] utilisateurRésumé : (auteur) The concept of integer ambiguity resolution-enabled Precise Point Positioning (PPP-RTK) relies on appropriate network information for the parameters that are common between the single-receiver user that applies and the network that provides this information. Most of the current methods for PPP-RTK are based on forming the ionosphere-free combination using dual-frequency Global Navigation Satellite System (GNSS) observations. These methods are therefore restrictive in the light of the development of new multi-frequency GNSS constellations, as well as from the point of view that the PPP-RTK user requires ionospheric corrections to obtain integer ambiguity resolution results based on short observation time spans. The method for PPP-RTK that is presented in this article does not have above limitations as it is based on the undifferenced, uncombined GNSS observation equations, thereby keeping all parameters in the model. Working with the undifferenced observation equations implies that the models are rank-deficient; not all parameters are unbiasedly estimable, but only combinations of them. By application of S-system theory the model is made of full rank by constraining a minimum set of parameters, or S-basis. The choice of this S-basis determines the estimability and the interpretation of the parameters that are transmitted to the PPP-RTK users. As this choice is not unique, one has to be very careful when comparing network solutions in different S-systems; in that case the S-transformation, which is provided by the S-system method, should be used to make the comparison. Knowing the estimability and interpretation of the parameters estimated by the network is shown to be crucial for a correct interpretation of the estimable PPP-RTK user parameters, among others the essential ambiguity parameters, which have the integer property which is clearly following from the interpretation of satellite phase biases from the network. The flexibility of the S-system method is furthermore demonstrated by the fact that all models in this article are derived in multi-epoch mode, allowing to incorporate dynamic model constraints on all or subsets of parameters. Numéro de notice : A2016-022 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-015-0854-9 Date de publication en ligne : 05/11/2015 En ligne : https://doi.org/10.1007/s00190-015-0854-9 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79465
in Journal of geodesy > vol 90 n° 1 (January 2016) . - pp 15 - 44[article]Le drone fait carrière / Michel Ravelet in Géomètre, n° 2131 (décembre 2015)
[article]
Titre : Le drone fait carrière Type de document : Article/Communication Auteurs : Michel Ravelet, Auteur Année de publication : 2015 Article en page(s) : pp 12 - 13 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Vedettes matières IGN] Topographie moderne
[Termes IGN] drone
[Termes IGN] lever aérien
[Termes IGN] lever mobile
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] positionnement par GPSRésumé : (auteur) Le drone commence à équiper les cabinets de géomètres-experts pour des missions bien précises, par exemple un levé de carrière. Numéro de notice : A2015-833 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79136
in Géomètre > n° 2131 (décembre 2015) . - pp 12 - 13[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 063-2015111 RAB Revue Centre de documentation En réserve L003 Disponible Multi-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)
[article]
Titre : Multi-GNSS as a combination of GPS, GLONASS and Beidou measurements carried out in real time Type de document : Article/Communication Auteurs : Zbigniew Siejka, Auteur Année de publication : 2015 Article en page(s) : pp 217 - 229 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] erreur de mesure
[Termes IGN] erreur systématique
[Termes IGN] hauteur ellipsoïdale
[Termes IGN] positionnement cinématique en temps réel
[Termes IGN] positionnement par BeiDou
[Termes IGN] positionnement par GLONASS
[Termes IGN] positionnement par GPSRésumé : (auteur) In this paper, the advantages of using combination of different GNSS including GPS, GLONASS and BeiDou with respect to singe GPS are presented. It was shown that an improvement of satellite conditions at the chosen measurement point due to increase of the number of visible satellites has an impact on RTK measurement errors. Additionally, it was shown that there are systematic errors in RTK measurements that can be eliminated to get more precise results of them, especially in the case of height determination. Numéro de notice : A2015--040 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1515/arsa-2015-0017 En ligne : http://dx.doi.org/10.1515/arsa-2015-0017 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81761
in Artificial satellites > vol 50 n° 4 (December 2015) . - pp 217 - 229[article]UAV real-time: Data use in a lightweight direct georeferencing system / Christian Eling in GPS world, vol 26 n° 11 (November 2015)PermalinkInstantaneous ambiguity resolution for URTK and its seamless transition with PPP-AR / Xuan Zou in GPS solutions, vol 19 n° 4 (october 2015)PermalinkImpacts of real-time satellite clock errors on GPS precise point positioning-based troposphere zenith delay estimation / Junbo Shi in Journal of geodesy, vol 89 n° 8 (August 2015)PermalinkThe mixed-receiver BeiDou inter-satellite-type bias and its impact on RTK positioning / Nandakumaran Nadarajah in GPS solutions, vol 19 n° 3 (July 2015)PermalinkAsynchronous RTK precise DGNSS positioning method for deriving a low-latency high-rate output / Zhang Liang in Journal of geodesy, vol 89 n° 7 (July 2015)PermalinkDivisional ambiguity resolution for long range reference stations in network RTK / J. Deng in Survey review, vol 47 n° 343 (July 2015)PermalinkGNSS-WARP software for real-time precise point positioning / Tomasz Hadas in Artificial satellites, vol 50 n° 2 (June 2015)PermalinkReal-time GPS precise point positioning-based precipitable water vapor estimation for rainfall monitoring and forecasting / Junbo Shi in IEEE Transactions on geoscience and remote sensing, vol 53 n° 6 (June 2015)PermalinkEfficient obstruction analysis for GNSS relative positioning of terrestrial mobile mapping system / J.Y. Han in Survey review, vol 47 n° 342 (May 2015)PermalinkIonospheric effects in uncalibrated phase delay estimation and ambiguity-fixed PPP based on raw observable model / Shengfeng Gu in Journal of geodesy, vol 89 n° 5 (May 2015)PermalinkPrecision analysis of Trimble Rtx surveying technology with Xfill function in the context of obtained conversion observations / Robert Krzyzek in Reports on geodesy and geoinformatics, vol 97 (December 2014)PermalinkReview and principles of PPP-RTK methods / Peter J.G. Teunissen in Journal of geodesy, vol 89 n° 3 (March 2015)PermalinkGPS satellite surveying / Alfred Leick (2015)PermalinkUAV shipboard landing with RTK: a carrier phase compensates for wind and wave motion / Chiu-Jung Huang in GPS world, vol 25 n° 5 (May 2014)PermalinkInstantaneous BeiDou+GPS RTK positioning with high cut-off elevation angles / Peter J.G. Teunissen in Journal of geodesy, vol 88 n° 4 (April 2014)PermalinkReal-time precise point positioning regional augmentation for large GPS reference networks / Xinging Li in GPS solutions, vol 18 n° 1 (january 2014)PermalinkPedestrian navigation services: Challenges and current trends / Hassan A. Karimi in Geomatica, vol 67 n° 4 (December 2013)PermalinkFinding 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)PermalinkA reference station-based GNSS computing mode to support unified precise point positioning and real-time kinematic services / Yanming Feng in Journal of geodesy, vol 87 n° 10-12 (October - December 2013)PermalinkMéthodes de travail dans les réseaux GNSS : 5e partie, le positionnement cinématique post-traité suivant les méthodes “NPPK” et “PPK pivot libre” / Romain Legros in XYZ, n° 136 (septembre - novembre 2013)PermalinkNetwork RTK: What is the effect of user and CORS height on NRTK performance? / Mark Petovello in Inside GNSS, vol 8 n° 5 (September - October 2013)PermalinkCalibration of the clock-phase biases of GNSS networks: the closure-ambiguity approach / A. Lannes in Journal of geodesy, vol 87 n° 8 (August 2013)PermalinkMéthodes de travail dans les réseaux GNSS. 4ème partie, Le positionnement cinématique temps-réel suivant les méthodes "NRTK" et "RTK pivot libre" / Romain Legros in XYZ, n° 135 (juin - août 2013)PermalinkMéthodes de travail dans les réseaux GNSS, 3ème partie Méthodes du "statique multi-stations" / Romain Legros in XYZ, n° 134 (mars - mai 2013)PermalinkIntegration of galileo system in a positioning software, and estimation of Galileo system benefits / Laurane Boulanger (2013)PermalinkReliability of partial ambiguity fixing with multiple GNSS constellations / J. Wang in Journal of geodesy, vol 87 n° 1 (January 2013)PermalinkPermalinkMéthodes de travail dans les réseaux GNSS, 2ème partie Le positionnement statique suivant les méthodes indirectes du pivot central ou de la station virtuelle. / Romain Legros in XYZ, n° 133 (décembre 2012 - février 2013)PermalinkWeb GIS goes nuclear in Taiwan / Taiwan atomic energy council in GEO: Geoconnexion international, vol 11 n° 9 (october 2012)PermalinkMéthodes de travail dans les réseaux GNSS, 1ère partie Le positionnement statique temps-réel par "filtrage et moyenne de positions NRTK" / Romain Legros in XYZ, n° 132 (septembre - novembre 2012)PermalinkNetwork RTK in Ireland / K. Bazelides in GEO: Geoconnexion international, vol 11 n° 6 (june 2012)PermalinkCo-seismic displacement estimation / M. Crespi in GIM international, vol 25 n° 5 (May 2011)PermalinkDoppler-aided positioning: Improving single-frequency in the urban environment / M. Bahrami in GPS world, vol 22 n° 5 (May 2011)PermalinkPermalinkPosition: 20 kilometers, heavy construction: world's longest immersed tunnel, 40 meters underwater / A. Jensen in GPS world, vol 22 n° 5 (May 2011)PermalinkPermalinkRegional reference network augmented precise point positioning for instantaneous ambiguity resolution / X. Li in Journal of geodesy, vol 85 n° 3 (March 2011)PermalinkMeasurement accuracy in Network-RTK / R. Emardson in Bulletin of geodesy and geomatics BGG, vol 69 n° 2 - 3 (December 2010)PermalinkMobile laser scanning on the road / Riegl in GEO: Geoconnexion international, vol 9 n° 9 (october 2010)PermalinkReal-time adjustment underwater positioning system for submarines / W. Cheng in Marine geodesy, vol 33 n° 2-3 (April - September 2010)PermalinkReal-time registration of airborne laser with sub-decimeter accuracy / Jan Skaloud in ISPRS Journal of photogrammetry and remote sensing, vol 65 n° 2 (March - April 2010)PermalinkWide-area RTK: high precision positioning on a continental scale / Manuel Hernández-Pajares in Inside GNSS, vol 5 n° 2 (March - April 2010)PermalinkNavigation Signal Processing for GNSS Software Receivers / T. Pany (2010)PermalinkPrecise point positioning: a powerful technique with a promising future / Sunil Bisnath in GPS world, vol 20 n° 4 (April 2009)PermalinkContrôle de l'intégrité GPS en temps réel et géoréférencement direct par RTK-GPS pour le levé laser aéroporté / Yannick Stebler in Géomatique suisse, vol 107 n° 3 (01/03/2009)PermalinkEvaluation ponctuelle des performances du réseau TERIA / Stéphane Durand in XYZ, n° 118 (mars - mai 2009)PermalinkMonitoring storm-enhanced density using IGS reference station data / Anthea Coster in Journal of geodesy, vol 83 n° 3-4 (March - April 2009)PermalinkDeploying a Locata network to enable precise positioning in urban canyons / J.P. Montillet in Journal of geodesy, vol 83 n° 2 (February 2009)PermalinkGNSS three carrier ambiguity resolution using ionosphere-reduced virtual signals / Y. Feng in Journal of geodesy, vol 82 n° 12 (December 2008)PermalinkFirst AGPS - now BGPS: instantaneous precise positioning anywhere / I. Petrovski in GPS world, vol 19 n° 11 (November 2008)PermalinkRadio technology in the fiels: get the best out of your radios / A. Kluft in Geoinformatics, vol 11 n° 7 (01/11/2008)PermalinkDouble differencing / Huibert-Jan Lekkerkerk in Geoinformatics, vol 11 n° 6 (01/09/2008)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)PermalinkGNSS solutions: real-time kinematic with multiple reference stations / P. Alves in Inside GNSS, vol 3 n° 5 (July - August 2008)PermalinkComparaison du positionnement temps réel classique RTK et du positionnement GPS temps réel réseau : mise en oeuvre dans le réseau Orphéon / Laurent Morel in XYZ, n° 115 (juin - août 2008)PermalinkReal-time kinematic GPS positioning / P. Haase in Geoinformatics, vol 11 n° 3 (01/04/2008)PermalinkImproving long-range RTK: getting a better handle on the biases / D. Kim in GPS world, vol 19 n° 3 (March 2008)PermalinkPermalinkHEPOS : designing and implementating an RTK network / M. Gianniou in Geoinformatics, vol 11 n° 1 (01/01/2008)PermalinkThe value of location for business process optimisation / F. Fischer in Geoinformatics, vol 11 n° 1 (01/01/2008)PermalinkTopographie : un demi-siècle d'évolution technologique : (4/4) l'avènement des satellites, la géodésie spatiale, le GPS ; la photogrammétrie / Paul Courbon in XYZ, n° 113 (décembre 2007 - février 2008)PermalinkPlace-tagged podcasts with synchronized maps on mobile media players / M. Arikawa in Cartography and Geographic Information Science, vol 34 n° 4 (October 2007)PermalinkTowards ubiquitous cartography / Georg Gartner in Cartography and Geographic Information Science, vol 34 n° 4 (October 2007)PermalinkUser aspects of adaptative visualization for mobile maps / Annu-Maaria Nivala in Cartography and Geographic Information Science, vol 34 n° 4 (October 2007)PermalinkGPS des villes, GPS des champs / Anonyme in Géomatique expert, n° 58 (01/09/2007)PermalinkMulti-test UHF RTK sets / Huibert-Jan Lekkerkerk in Geoinformatics, vol 10 n° 6 (01/09/2007)PermalinkPhotogrammetry and GIS in Turkey: improving heritage documentation / A. Cabuk in GIM international, vol 21 n° 9 (September 2007)PermalinkFrom cartography and mobility to location-based services: a Canadian business perspective / Martin Plante in Geomatica, vol 61 n° 2 (June 2007)PermalinkGeolocating the underworld maze of pipes ans cables: buried infrastructure as prerequisites for development of a civilisation / J. Parker in Geoinformatics, vol 10 n° 4 (01/06/2007)PermalinkUbiquitous positioning: Anyone, anything, anytime, anywhere / X. Meng in GPS world, vol 18 n° 6 (June 2007)PermalinkNetwork RTK: getting ready for GNSS modernization / H. Landau in GPS world, vol 18 n° 4 (April 2007)PermalinkEfficient maintenance of the Japanese datum 2000 using crustal deformation models : Patch JGD & semi-dynamic datum / Yoshiyuki Tanaka in Bulletin of the Geographical survey institute, vol 54 (March 2007)PermalinkMobile mapping and autonomous vehicle navigation / Charles K. Toth in Revue Française de Photogrammétrie et de Télédétection, n° 185 (Mars 2007)PermalinkNetwork real-time kinematic performance analysis using RTCM 3.0 and the Southern Alberta network / Kyle O'Keefe in Geomatica, vol 61 n° 1 (March 2007)PermalinkModelling and prediction of GPS availability with digital photogrammetry and LiDAR / Georges E. Taylor in International journal of geographical information science IJGIS, vol 21 n° 1-2 (january 2007)PermalinkGABRIEL: Gis activity-based travel simulator, activity scheduling in the presence of real-time information / Mei-Po Kwan in Geoinformatica, vol 10 n° 4 (December 2006)PermalinkLe GPS cinématique, une solution pour l'enrichissement de la géométrie dans un système d'information routier / Hocine Nechniche in XYZ, n° 109 (décembre 2006 - février 2007)PermalinkPhase wind-up analysis: assessing real-time kinematic performance / D. Kim in GPS world, vol 17 n° 9 (September 2006)PermalinkPractical satellite navigation: Part 6 base station installation / Huibert-Jan Lekkerkerk in Geoinformatics, vol 9 n° 6 (01/09/2006)PermalinkFirst nationalwide high-density GPS RTK network in the Netherlands: geographic expansion possible / M. Van Der Wolk in Geoinformatics, vol 9 n° 4 (01/06/2006)PermalinkMicrosoft et la géolocalisation / Anonyme in Géomatique expert, n° 51 (01/06/2006)PermalinkPractical satellite navigation: part 4 differential GPS systems and RTK techniques / Huibert-Jan Lekkerkerk in Geoinformatics, vol 9 n° 4 (01/06/2006)PermalinkReview trimble R8 GNSS versus Topcon HiPer Pro : GPS and Glonass combined receivers / Huibert-Jan Lekkerkerk in Geoinformatics, vol 9 n° 4 (01/06/2006)PermalinkReal-time capability of Geonet [GPS Earth Observation Network] system and its application to crust monitoring / A. Yamagiwa in Bulletin of the Geographical survey institute, vol 53 (March 2006)PermalinkLes réseaux GPS temps réel [diaporama] / Laurent Morel (01/02/2006)Permalink"Apport d'un réseau GPS temps réel centimétrique en vue de garantir l'interopérabilité des SIG entre les pays frontaliers et la France et d'assurer l'homogénéité du géoréférencement des SIG" / Madara Caunite (2006)PermalinkDéveloppement d'un logiciel de traitement de données GPS dans le cadre des réseaux GNSS temps réel / Omid Kamali (2006)PermalinkAnalysis of long-range network RTK during a severe ionospheric storm / Pawel Wielgosz in Journal of geodesy, vol 79 n° 9 (December 2005)PermalinkNaviguer dans le monde sans fil : un aperçu de l'influence exercée par la technologie sans fil sur les topographes / N. Pugh in XYZ, n° 104 (septembre - novembre 2005)PermalinkStations totales optiques et GPS : la "topographie intégrée" chez Trimble / J.F. Cabanel in XYZ, n° 103 (juin - août 2005)PermalinkTechnique de lever par véhicule équipé de récepteurs GPS et d'une station totale / Hervé Gontran in XYZ, n° 103 (juin - août 2005)PermalinkUnstuck in traffic / M. Whitford in GPS world, vol 16 n° 6 (June 2005)PermalinkReal-time speed limit sign recognition based on locally adaptive thresholding and depth-first-search / J. Wu in Photogrammetric Engineering & Remote Sensing, PERS, vol 71 n° 4 (April 2005)PermalinkAnalysis of the design parameters of multi-reference station RTK GPS networks / Ahmed El-Mowafy in Surveying and land information science, vol 65 n° 1 (01/03/2005)PermalinkUtilisation du GPRS pour le RTK / L. Chalaye in XYZ, n° 102 (mars - mai 2005)Permalink