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Titre : IGS International GNSS Service technical report 2015 Type de document : Rapport Auteurs : Yoomin Jean, Éditeur scientifique ; Rolf Dach, Éditeur scientifique Editeur : Bern : Astronomical Institute Année de publication : 2016 Importance : 220 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] Global Navigation Satellite SystemRésumé : (Editeur) Applications of the Global Navigation Satellite Systems (GNSS) to Earth Sciences are numerous. The International GNSS Service (IGS), a federation of government agencies, universities and research institutions, plays an increasingly critical role in support of GNSS–related research and engineering activities. This Technical Report includes contributions from the IGS Governing Board, the Central Bureau, Analysis Centers, Data Centers, station and network operators, working groups, pilot projects, and others highlighting status and important activities, changes and results that took place and were achieved during 2015. Note de contenu : 1. Executive Groups
- Governing Board / G. Johnston
- Central Bureau / R. Neilan, S. Fisher, G. Walia, D. Maggert, and A. Craddock
2. Analysis Centers
Analysis Center Coordinator,
- Center for Orbit Determination in Europe (CODE)
- Natural Resources Canada (NRCan)
- European Space Operations Center (ESOC)
- GeoForschungsZentrum (GFZ)
- Geodetic Observatory Pecný (GOP), No report submitted
- Centre National d’Etudes Spatiales/Collecte Localisation satellites (CNES/CLS)
- Jet Propulsion Laboratory (JPL)
- Massachusetts Institute of Technology (MIT) No report submitted
- National Geodetic Survey (NGS)
- Scripps Institution of Oceanography (SIO) No report submitted
- United States Naval Observatory (USNO)
- University of Wuhan (WHU)
- EUREF Permanent Network (EPN)
- SIRGAS
3. Data Centers
- Infrastructure Committee
- Crustal Dynamics Data Information System (CDDIS)
- Scripps Institution of Oceanography (SIO), No report submitted
- Institut National de l’Information Géographique et Forestière (IGN), No report submitted
- Korean Astronomy and Space Science Institute (KASI) No report submitted
4. Working Groups, Pilot Projects
- Antenna Working Group 133
- Bias and Calibration Working Group
- Clock Products Working Group
- Data Center Working Group
- Ionosphere Working Group
- Multi–GNSS Working Group
- Space Vehicle Orbit Dynamics Working Group, No report submitted
- Real–Time Service
- Reference Frame Working Group
- RINEX Working Group
- Tide Gauge Benchmark Monitoring Project
- Troposphere Working GroupNuméro de notice : 17513 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Rapport En ligne : http://ftp://igs.org/pub/resource/pubs/2015_techreport.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90494 ContientDocuments numériques
en open access
IGS International GNSS Service technical report 2015Adobe Acrobat PDF
Titre : ITRF co-location site survey at Kitab, Uzbekistan Type de document : Rapport Auteurs : Marion Gaudon, 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 : Rapports techniques num. 28581 Importance : 60 p. Format : 21 x 30 cm Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] co-positionnement
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] Ouzbékistan
[Termes IGN] point de liaison (géodésie)
[Termes IGN] station DORIS
[Termes IGN] station GNSS
[Termes IGN] station ReginaRésumé : (auteur) The ITRF2014 (latest) realization of the International Terrestrial Reference System computed by the Laboratoire de Recherche en Géodésie (LAREG) at IGN is the result of the combination of reference frame from four space geodesy techniques (i.e. DORIS, GNSS, SLR and VLBI). One way to realize one common frame consists in adding results in the combination from local ties at co-location sites. A DORIS station and a permanent GNSS station, part of the IGS network, are installed at Kitab's observatory (Uzbekistan). This report describes the local tie survey carried out in June 2016, following the installation of the GNSS station and the relocation of the DORIS station. Numéro de notice : 17456 Affiliation des auteurs : IGN (2012-2019) Thématique : POSITIONNEMENT Nature : Rapport de mission Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89672 Documents numériques
peut être téléchargé
ITRF co-location site survey at Kitab, UzbekistanAdobe Acrobat PDF
Titre : Managua ITRF local tie (Nicaragua) Type de document : Rapport Auteurs : Jean-Claude Poyard, Auteur Mention d'édition : Version 1 Editeur : Saint-Mandé : Institut national de l'information géographique et forestière - IGN (2012-) Année de publication : 2016 Importance : 28 p. Langues : Français (fre) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes IGN] co-positionnement
[Termes IGN] compensation de coordonnées
[Termes IGN] Nicaragua
[Termes IGN] point de liaison (géodésie)
[Termes IGN] rattachement de station
[Termes IGN] station DORISRésumé : (auteur) Dans le cadre des activités assurées par l'IGN, un rattachement de précision est réalisé en avril 2016 lors de la mission d'installation de la station DORIS à l'INETER à Managua. Le rapport présente le déroulement du rattachement et les résultats obtenus. Note de contenu : Introduction
1. Co-location site description
1.1. Site description
1.2. Co-located points
2. Survey description
2.1. Organization
2.2. Equipment
2.3. Polygon network
2.4. Survey method
3. Computation
3.1. On site validation
3.2. GNSS baselines
3.3. Final adjustement
4. Results
4.1. Adjusted coordinates and confidence regions
4.2. Vectors between points of interest
5. AppendicesNuméro de notice : 19778 Affiliation des auteurs : IGN (2012-2019) Thématique : POSITIONNEMENT Nature : Rapport de mission Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84867 Documents numériques
en open access
Managua ITRF local tie (Nicaragua)Adobe Acrobat PDF 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]
Titre : Optimal GPS/GALILEO GBAS methodologies with an application to troposphere Type de document : Thèse/HDR Auteurs : Alize Guilbert, Directeur de thèse ; Christophe Macabiau, Directeur de thèse Editeur : Toulouse : Université de Toulouse Année de publication : 2016 Importance : 301 p. Format : 21 x 30 cm Note générale : bibliographie
Thèse en vue de l'obtention du Doctorat de l'Université de Toulouse, spécialité :
Signal, Image, Acoustique et OptimisationLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] aviation civile
[Termes IGN] constellation Galileo
[Termes IGN] constellation GLONASS
[Termes IGN] constellation GPS
[Termes IGN] correction troposphérique
[Termes IGN] données GPS
[Termes IGN] erreur de positionnement
[Termes IGN] gradient de troposphère
[Termes IGN] modèle météorologique
[Termes IGN] positionnement par GNSS
[Termes IGN] retard troposphérique
[Termes IGN] système d'extension au solIndex. décimale : THESE Thèses et HDR Résumé : (auteur) In the Civil Aviation domain, research activities aim to improve airspace capacity and efficiency whilst meeting stringent safety targets. These goals are met by improving performance of existing services whilst also expanding the services provided through the development of new Navigation Aids. One such developmental axe is the provision of safer, more reliable approach and landing operations in all weather conditions. The Global Navigation Satellite System (GNSS) has been identified as a key technology in providing navigation services to civil aviation users [1] [2] thanks to its global coverage and accuracy. The GNSS concept includes the provision of an integrity monitoring function by an augmentation system to the core constellations. This is needed to meet the required performances which cannot be met by the stand-alone constellations. One of the three augmentation systems developed within civil aviation is the GBAS (Ground Based Augmentation System) and is currently standardized by the ICAO to provide precision approach navigation services down to Cat I using the GPS or GLONASS constellations [3]. Studies on-going with the objective to extend the GBAS concept to support Cat II/III precision approach operations with GPS L1 C/A, however some difficulties have arisen regarding ionospheric monitoring. With the deployment of Galileo and Beidou alongside the modernization of GPS and GLONASS, it is envisaged that the GNSS future will be multi-constellation (MC) and multi-frequency (MF). European research activities have focused on the use of GPS and Galileo. The MC/MF GBAS concept should lead to many improvements such as a better modelling of atmospheric effects but several challenges must be resolved before the potential benefits may be realized. Indeed, this PhD has addressed two key topics relating to GBAS, the provision of corrections data within the MC/MF GBAS concept and the impact of tropospheric biases on both the SC/SF and MC/MF GBAS concepts. Due to the tight constraints on GBAS ground to air communications link, the VDB unit, a novel approach is needed. One of the proposals discussed in the PhD project for an updated GBAS VDB message structure is to separate message types for corrections with different transmission rates. Then, this PhD argues that atmospheric modelling with regards to the troposphere has been neglected in light of the ionospheric monitoring difficulties and must be revisited for both nominal and anomalous scenarios. The thesis focuses on how to compute the worst case differential tropospheric delay offline in order to characterize the threat model before extending previous work on bounding this threat in order to protect the airborne GBAS user. In the scope of MC/MF GBAS development, an alternative approach was needed. Therefore, in this PhD project, Numerical Weather Models (NWMs) are used to assess fully the worst case horizontal component of the troposphere. An innovative worst case horizontal tropospheric gradient search methodology is used to determine the induced ranging biases impacting aircraft performing Cat II/III precision approaches with GBAS. This provides as an output a worst case bias as a function of elevation for two European regions.The vertical component is also modelled by statistical analysis by comparing the truth data to the GBAS standardized model for vertical tropospheric correction up to the height of the aircraft. A model of the total uncorrected differential bias is generated which must be incorporated within the nominal GBAS protection levels. In order to bound the impact of the troposphere on the positioning error and by maintaining the goal of low data transmission, different solutions have been developed which remain conservative by assuming that ranging biases conspire in the worst possible way. Through these techniques, it has been shown that a minimum of 3 parameters may be used to characterize a region’s model. Note de contenu : 1- Introduction
2- Navigation performance requirements for civil aviation
3- GNSS processing
4- Optimal processing models/options for MC/MF GBAS
5- Anomalous troposphere modelling for GBAS
6- Anomalous troposphere bounding
7- Conclusions and future workNuméro de notice : 25826 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Thèse française Note de thèse : Thèse de Doctorat : Spécialité : Signal, Image, Acoustique et Optimisation : Toulouse : 2016 Organisme de stage : Laboratoire de Télécommunications (TELECOM-ENAC) nature-HAL : Thèse DOI : sans En ligne : http://www.theses.fr/2016INPT0049 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95116 The influence of application a simplified transformation model between reference frames ECEF and ECI onto prediction accuracy of position and velocity of GLONASS satellites / Robert Krzyzek in Reports on geodesy and geoinformatics, vol 99 (December 2015)PermalinkVisibility and geometry of global satellite navigation systems constellations / Jacek Januszewski in Artificial satellites, vol 50 n° 4 (December 2015)PermalinkEstablishment of new Oman National Geodetic Datum ONGD14 / Y. Al-Toobi in Survey review, vol 47 n° 345 (November 2015)PermalinkBeiDou phase bias estimation and its application in precise point positioning with triple-frequency observable / Shengfeng Gu in Journal of geodesy, vol 89 n° 10 (october 2015)PermalinkEstimating the yaw-attitude of an BDS IGSO and MEO satellites / Xiaolei Dai in Journal of geodesy, vol 89 n° 10 (october 2015)PermalinkCalculation of position and velocity of GLONASS satellite based on analytical theory of motion / W. Goral in Artificial satellites, vol 50 n° 3 (September 2015)PermalinkPermalinkGalileo en route vers le GNSS / Bernard Bonhoure in XYZ, n° 144 (septembre - novembre 2015)PermalinkSimulating the effects of quasar structure on parameters from geodetic VLBI / Stanislav S. Shabala in Journal of geodesy, vol 89 n° 9 (september 2015)PermalinkThe clock at the center of the universe / Gavin Schrock in xyHt, vol 2015 n° 6 (June 2015)PermalinkDistant positioning for GNSS securing / Marc Revol in Navigation aérienne, maritime, spatiale, terrestre, vol 62 n° 247 (mai 2015)PermalinkLocal GNSS monitoring / A. Guilloton in Navigation aérienne, maritime, spatiale, terrestre, vol 62 n° 247 (mai 2015)PermalinkPositioning, navigation, and timing (PNT): governance, required improvements / Dana Allen Goward in Navigation aérienne, maritime, spatiale, terrestre, vol 62 n° 247 (mai 2015)Permalinkvol 26 n° 4 - April 2015 - Galileo E1, E5A performance (Bulletin de GPS world)PermalinkEnhanced solar radiation pressure modeling for Galileo satellites / Oliver Montenbruck in Journal of geodesy, vol 89 n° 3 (March 2015)PermalinkEstimation of multi-constellation GNSS observation stochastic properties using single receiver single satellite data validation method / Ahmed El-Mowafy in Survey review, vol 47 n° 341 (March 2015)PermalinkPermalinkGPS for land surveyors / Jan Van Sickle (2015)PermalinkGPS satellite surveying / Alfred Leick (2015)PermalinkPermalink