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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 : Theoretical and practical aspects of high-rate GNSS geodetic observations Type de document : Thèse/HDR Auteurs : Simon Häberling, Auteur Editeur : Zurich : Schweizerischen Geodatischen Kommission / Commission Géodésique Suisse Année de publication : 2016 Autre Editeur : Zurich : Eidgenossische Technische Hochschule ETH - Ecole Polytechnique Fédérale de Zurich EPFZ Collection : Geodätisch-Geophysikalische Arbeiten in der Schweiz, ISSN 0257-1722 num. 95 Importance : 212 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-908440-41-3 Note générale : bibliographie
thesis submitted to attain the degree of doctor of sciences of ETH ZurichLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] bruit thermique
[Termes IGN] erreur de positionnement
[Termes IGN] filtrage du signal
[Termes IGN] fréquence
[Termes IGN] onde sismique
[Termes IGN] phase
[Termes IGN] source d'erreurIndex. décimale : 30.61 Systèmes de Positionnement par Satellites du GNSS Résumé : (auteur) The main goal of the thesis is the thorough investigation and quantification of GNSS observation errors in the frequency range above 1 Hz while going to the limit of the actual receiver technology with sampling rates up to 100 sps. The potential GNSS errors in this high-frequency band are mainly caused by receiver internal error sources. Due to theoretical considerations and empirical results derived from GNSS observations of almost all available carrier signals, the carrier jitter induced by thermal noise and the receiver frequency response produced by highly dynamic motions could be detected as the two most dominant disturbances affecting high-rate GNSS observations above 1 Hz.
The zero-baseline configuration (splitting the signal from one antenna to two receivers) allowed a detailed study of the carrier phase jitter and correlations between subsequent epochs dependent on different GNSS signal characteristics and baseband parameters. The size of the carrier phase jitter is directly determined by the carrier-to-noise density ratio at baseband and the corresponding loop bandwidth. Especially encrypted code sequences have a strong influence on the quality of the corresponding carrier phase component due to signal strength consuming decryption algorithms. The final consequences are a higher carrier jitter and a stronger frequency response due to the necessary PLL guiding by the strong loop signals such as GPS L1 derived from the C/A component. The impact of this higher carrier phase jitter plays a dominant role for the overall noise in the highfrequency spectrum while building the ionosphere-free linear combination. This has been demonstrated using a zero-baseline, but also a 10 m and 110 km baseline. The carrier phase jitter induced by thermal noise defines the noise level above 1 Hz. This high-frequency noise is therefore baseline independent. No significant differences between a baseline of 10 m and 110 km could be detected considering the signal spectrum between 0.01 Hz and 50 Hz.
For the determination and analysis of the GNSS errors caused by high-frequency motions an experimental setup has been established consisting of a single-axis shake table as motion generator and of a well-known ground-truth defined by inductive displacement transducers. The ground-truth was validated by a strong motion seismometer with a flat frequency response carried on the shake table. With an additional precise time synchronization between all the sensors, the experiment with a mounted GNSS antenna on the shake table enabled the determination of the GNSS receiver frequency response between 1 and 20 Hz. Using different receiver types and PLL bandwidths, the amplitudes even at 3 Hz can be overestimated by about 50%, above 10 Hz also an overestimation can be observed or a reduction by well over half of the amplitude. Not only the amplitude is affected, but also the signal phase with errors between 30 and 90 degrees. This demonstrates the importance of a detailed knowledge of the loop parameters for an assessment of the expected errors, but also for applying an inverse filter in order to correct the GNSS receiver frequency response based on a simple digital PLL model. These results are relevant for all applications with strong dynamics using high-rate GNSS, such as structural health monitoring, machine guidance, navigation, and ionosphere scintillation studies.
Further, seismological implications and the potential contribution of high-rate GNSS to seismology has been evaluated. Based on a moderate synthetic earthquake expected for Switzerland generated on the shake table, the sensitivity of high-rate GPS to highfrequency seismic signals using a realistic baseline length could be tested. Additionally, the receiver response has been simulated for real earthquakes in order to demonstrate the displacement errors caused by the response.Note de contenu : 1- Introduction
2- GNSS Signal Structure
3- GNSS Receiver Architecture
4- Carrier Tracking Modeling
5- Analysis of the GNSS Signal Noise
6- Shake Table Experiments
7- GNSS Receiver Response
8- Implications on Seismology and other Applications
9- Conclusions and OutlookNuméro de notice : 17461 Affiliation des auteurs : non IGN Autre URL associée : https://doi.org/10.3929/ethz-a-010592866 Thématique : POSITIONNEMENT Nature : Thèse étrangère Note de thèse : thèse : Sciences : ETHZ : 2015 DOI : 10.3929/ethz-a-010592866 En ligne : https://www.sgc.ethz.ch/sgc-volumes/sgk-95.pdf Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=89687 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 17461-01 30.61 Livre Centre de documentation Géodésie Disponible La genèse du Système International de Référence Terrestre (ITRS) / Claude Boucher in XYZ, n° 145 (décembre 2015 - février 2016)
[article]
Titre : La genèse du Système International de Référence Terrestre (ITRS) Type de document : Article/Communication Auteurs : Claude Boucher , Auteur Année de publication : 2015 Article en page(s) : pp 53 - 56 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] astrométrie
[Termes IGN] International Earth Rotation Service
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] International Terrestrial Reference System
[Termes IGN] MERIT
[Termes IGN] système terrestre du BIHRésumé : (Auteur) L'histoire de la géodésie met en évidence plusieurs périodes démarquées par l'émergence de nouvelles techniques. Ainsi, l'apparition des méthodes de triangulation vers 1533 fut à l'origine du développement des réseaux géodésiques, que le lancement en 1959 du premier satellite artificiel remit en cause, en ouvrant l'ère de la géodésie spatiale. Voir par exemple Levallois (1988) ou Boucher, Willis (2015). C'est plus précisément l'évolution des concepts de systèmes de référence géodésiques et de leurs réalisations qui est l'objet de cet article, passant de l'astronomie géodésique à la géodésie spatiale. Numéro de notice : A2015-869 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79267
in XYZ > n° 145 (décembre 2015 - février 2016) . - pp 53 - 56[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 112-2015041 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
en open access
La genèse du Système International - pdf éditeurAdobe Acrobat PDF 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]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)
[article]
Titre : The influence of application a simplified transformation model between reference frames ECEF and ECI onto prediction accuracy of position and velocity of GLONASS satellites Type de document : Article/Communication Auteurs : Robert Krzyzek, Auteur ; Bogdan Skorupa, Auteur Année de publication : 2015 Article en page(s) : pp 19 - 27 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale
[Termes IGN] constellation GLONASS
[Termes IGN] éphémérides de satellite
[Termes IGN] orbitographie
[Termes IGN] position
[Termes IGN] prédiction
[Termes IGN] système de référence géodésique
[Termes IGN] transformation de coordonnéesRésumé : (auteur) In computational tasks of satellite geodesy there is a need for transformation of coordinates between reference frames ECEF – Earth Centered, Earth Fixed and ECI – Earth Centered, Inertial. Strict and simplified transformation models, which can be used in case of the position and velocity short-term predictions of GLONASS satellites, have been presented in this study. Comparison of the results of state vector components predictions of the GLONASS satellites, in dependence of the used transformation model, have also been presented. Accuracy of the prediction has been determined on the basis of the analyse of deviations of the predicted positions and velocities of GLONASS satellites from their values given in broadcast ephemeris. Numéro de notice : A2015--021 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.2478/rgg-2015-0009 En ligne : https://doi.org/10.2478/rgg-2015-0009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80845
in Reports on geodesy and geoinformatics > vol 99 (December 2015) . - pp 19 - 27[article]Visibility and geometry of global satellite navigation systems constellations / Jacek Januszewski in Artificial satellites, vol 50 n° 4 (December 2015)PermalinkCode shift keying : prospects for improving GNSS signal design / Axel Garcia-Pena in Inside GNSS, vol 10 n° 6 (November - December 2015)PermalinkTightly coupled integration of GPS precise point positioning and MEMS-based inertial systems / Mahmoud Abd Rabbou in GPS solutions, vol 19 n° 4 (october 2015)PermalinkGNSS satellite geometry and attitude models / Oliver Montenbruck in Advances in space research, vol 56 n° 6 (September 2015)Permalinkvol 89 n° 9 - september 2015 (Bulletin de Journal of geodesy) / International association of geodesyPermalinkSimulating the effects of quasar structure on parameters from geodetic VLBI / Stanislav S. Shabala in Journal of geodesy, vol 89 n° 9 (september 2015)PermalinkPermalinkGBAS ionospheric threat model assessment for category I operation in the Korean region / Minchan Kim 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)PermalinkDetermination of the local tie vector between the VLBI and GNSS reference points at Onsala using GPS measurements / Tong Ning in Journal of geodesy, vol 89 n° 7 (July 2015)Permalink