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Titre : IAG 150 Years : Proceedings of the IAG Scientific Assembly in Postdam, Germany, 2013 Type de document : Actes de congrès Auteurs : Chris Rizos, Editeur scientifique ; Pascal Willis , Editeur scientifique
Congrès : Congrès: IAG 2013, Scientific assembly IAG 150 Years (2013; Postdam, Allemagne), Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2016 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 143 Importance : 617 p. ISBN/ISSN/EAN : 978-3-319-24603-1 Langues : Anglais (eng) Résumé : (éditeur) This proceedings contains a selection of peer-reviewed papers presented at the IAG Scientific Assembly, Postdam, Germany, 1-6 September, 2013. The scientific sessions were forcussed on the definition, implementation and scientific applications of reference frames; gravity field determination and applications; the observation and assessment of earth hazards. It presents a collection of the contributions on the applications of earth rotations dynamics, on observation systems and services as well as on imaging and positioning techniques and its applications. Numéro de notice : sans Thématique : POSITIONNEMENT Nature : Actes nature-HAL : DirectOuvrColl/Actes DOI : 10.1007/978-3-319-24603-1 En ligne : https://doi.org/10.1007/978-3-319-24603-1 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79189
- The International DORIS Service (IDS) : Recent developments in preparation of ITRF2013 / Pascal Willis (2016)
- DPOD2008, A DORIS-oriented terrestrial reference frame for precise orbit determination / Pascal Willis (2016)
- IAG history, the years of World Wars and aftermath (1917-1959) / Claude Boucher (2016)
- Quality evaluation of the weekly vertical loading effects induced from continental water storage models / Z. Li (2016)
Quality evaluation of the weekly vertical loading effects induced from continental water storage models / Z. Li (2016)
Titre : Quality evaluation of the weekly vertical loading effects induced from continental water storage models Type de document : Article/Communication Auteurs : Z. Li, Auteur ; Tonie M. van Dam, Auteur ; Xavier Collilieux Congrès : Congrès: IAG 2013, Scientific assembly IAG 150 Years (2013; Postdam, Allemagne), Commanditaire Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2016 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 143 Importance : pp 45 - 54 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes descripteurs IGN] Amérique du nord
[Termes descripteurs IGN] coordonnées GPS
[Termes descripteurs IGN] eaux continentales
[Termes descripteurs IGN] effet de charge
[Termes descripteurs IGN] hauteur ellipsoïdale
[Termes descripteurs IGN] série temporelleRésumé : (auteur) To remove continental water storage (CWS) signals from the GPS data, CWS mass models are needed to obtain predicted surface displacements. We compared weekly GPS height time series with five CWS models: (1) the monthly and (2) three-hourly Global Land Data Assimilation System (GLDAS); (3) the monthly and (4) one-hourly Modern-Era Retrospective Analysis for Research and Applications (MERRA); (5) the six-hourly National Centers for Environmental Prediction-Department of Energy (NCEP-DOE) global reanalysis products (NCEP-R-2). We find that of the 344 selected global IGS stations, more than 77% of stations have their weighted root mean square (WRMS) reduced in the weekly GPS height by using both the GLDAS and MERRA CWS products to model the surface displacement, and the best improvement concentrate mainly in North America and Eurasia. We find that the one-hourly MERRA-Land dataset is the most appropriate product for modeling weekly vertical surface displacement caused by CWS variations. The three-hourly GLDAS data ranks the second, while the GLDAS and MERRA monthly products rank the third. The higher spatial resolution MERRA product improves the performance of the CWS model in reducing the scatter of the GPS height by about 2–6% compared with the GLDAS. Under the same spatial resolution, the higher temporal resolution could also improve the performance by almost the same magnitude. We also confirm that removing the ATML and NTOL effects from the weekly GPS height would remarkably improve the performance of CWS model in correcting the GPS height by at least 10%, especially for coastal and island stations. Since the GLDAS product has a much greater latency than the MERRA product, MERRA would be a better choice to model surface displacements from CWS. Finally, we find that the NCEP-R-2 data is not sufficiently precise to be used for this application. Further work is still required to determine the reason. Numéro de notice : C2013-011 Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/1345_2015_174 date de publication en ligne : 30/07/2015 En ligne : https://doi.org/10.1007/1345_2015_174 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91895
Titre : Implementation of the ETRS89 in Europe: Current Status and Challenges Type de document : Article/Communication Auteurs : Carine Bruyninx, Auteur ; Zuheir Altamimi Congrès : REFAG 2014, Reference Frames for Applications in Geosciences (IAG 2014 - Commission 1 symposium) (13 - 17 octobre 2014 , Luxembourg; Kirchberg, Grand Duché du Luxembourg) Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2015 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 146 Importance : pp 135 - 145 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes de référence et réseaux
[Termes descripteurs IGN] champ de vitesse
[Termes descripteurs IGN] densification géodésique
[Termes descripteurs IGN] European Terrestrial Reference System 1989
[Termes descripteurs IGN] INSPIRE
[Termes descripteurs IGN] réseau permanent EUREFRésumé : (auteur) The EUREF (Reference Frame Sub-Commission for Europe) Permanent GNSS Network (EPN) serves as the backbone for the realization of, and access to, the European Terrestrial Reference System (ETRS89). The cumulative site positions and velocities for the EPN stations are used for national ETRS89 densifications and geo-information applications. EUREF has developed specific guidelines through which European countries ask validation of their national ETRS89 densification campaigns. Today, the majority of the European countries has passed this process and a large part of European National Mapping and Cartographic Agencies have officially adopted ETRS89. In addition, ETRS89 plays a fundamental role in INSPIRE (Infrastructure for Spatial Information in the European Community).
In the meantime, some geographical zones are experiencing considerable deformation, degrading the lifetime of their national ETRS89 realizations. In order to derive a cross-boundary European velocity model that can be applied by different countries on top of their validated ETRS89 realization (while keeping consistency with their neighboring countries) the EUREF Technical Working Group has set up two initiatives: the EPN densification project and the EUREF Working Group on Deformation Models.Numéro de notice : C2014-022 Thématique : POSITIONNEMENT Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/1345_2015_130 En ligne : https://doi.org/10.1007/1345_2015_130 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=90681
contenu dans The 1st International workshop on the quality of geodetic observation and monitoring systems (QuGOMS'11) / Hansjörg Kutterer (2015)
Titre : Magic square of real spectral and time series analysis with an application to moving average processes Type de document : Article/Communication Auteurs : I. Krasbutter, Auteur ; Boris Kargoll, Auteur ; W.D. Schuh, Auteur Congrès : QuGOMS 2011, 1st IAG International workshop on the quality of geodetic observation and monitoring systems (13 - 15 avril 2011; Munich, Allemagne), Commanditaire Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2015 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 140 Importance : pp 9 - 14 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Statistiques
[Termes descripteurs IGN] analyse spectrale
[Termes descripteurs IGN] moyenne mobile
[Termes descripteurs IGN] processus stochastique
[Termes descripteurs IGN] série temporelleRésumé : (auteur) This paper is concerned with the spectral analysis of stochastic processes that are realvalued, one-dimensional, discrete-time, covariance-stationary, and which have a representation as a moving average (MA) process. In particular, we will review the meaning and interrelations of four fundamental quantities in the time and frequency domain, (1) the stochastic process itself (which includes filtered stochastic processes), (2) its autocovariance function, (3) the spectral representation of the stochastic process, and (4) the corresponding spectral distribution function, or if it exists, the spectral density function. These quantities will be viewed as forming the corners of a square (the “magic square of spectral and time series analysis”) with various connecting lines, which represent certain mathematical operations between them. To demonstrate the evaluation of these operations, we will discuss the example of a q-th order MA process. Numéro de notice : C2011-031 Thématique : MATHEMATIQUE Nature : Communication Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84802 The 1st International workshop on the quality of geodetic observation and monitoring systems (QuGOMS'11) / Hansjörg Kutterer (2015)
Titre : The 1st International workshop on the quality of geodetic observation and monitoring systems (QuGOMS'11) : Proceedings of the 2011 IAG International Worshop, Munich, Germany, April 13-15, 2011 Type de document : Actes de congrès Auteurs : Hansjörg Kutterer, Editeur scientifique ; Florian Seitz, Editeur scientifique ; Hamza Alkhatib, Editeur scientifique ; et al., Editeur scientifique Congrès : QuGOMS 2011, 1st IAG International workshop on the quality of geodetic observation and monitoring systems (13 - 15 avril 2011; Munich, Allemagne), Auteur Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2015 Collection : International Association of Geodesy Symposia, ISSN 0939-9585 num. 140 Importance : 183 p. Format : 21 x 29 cm ISBN/ISSN/EAN : 978-3-319-10827-8 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes descripteurs IGN] ajustement de paramètres
[Termes descripteurs IGN] données géodésiques
[Termes descripteurs IGN] méthode des moindres carrés
[Termes descripteurs IGN] modèle d'incertitude
[Termes descripteurs IGN] positionnement par géodésie spatiale
[Termes descripteurs IGN] surveillanceIndex. décimale : CG2011 Actes de congrès en 2011 Note de contenu : PART 1 -- Uncertainty Modeling of Geodetic Data
- Modeling Data Quality Using Artificial Neural Networks / Ralf Laufer and Volker Schwieger
- Magic Square of Real Spectral and Time Series Analysis with an Application to Moving Average Processes / I Krasbutter, B Kargoll, and W-D Schuh
- Describing the Quality of Inequality Constrained Estimates / L Roese-Koerner, B Devaraju,W-D Schuh, and N Sneeuw
- GNSS Integer Ambiguity Validation Procedures: Sensitivity Analysis /J Wang and T Li
- Optimal Design of Deformation Monitoring Networks Using the Global Optimization Methods / M Yetkin and C Inal
PART 2 -- Theoretical Studies on Combination Strategies and Parameter Estimation
- Towards the Combination of Data Sets from Various Observation Techniques / M Schmidt, F Göttl, and R Heinkelmann
- On the Weighted Total Least Squares Solutions / X Fang and H Kutterer
- Integration of Observations and Models in a Consistent Least Squares Adjustment Model / A Heiker and H Kutterer
- Comparison of Different Combination Strategies Applied for the Computation of Terrestrial Reference Frames and Geodetic Parameter Series / Manuela Seitz
- W-Ratio Test as an Integer Aperture Estimator: Pull-in Regions and Ambiguity Validation Performance / T Li and J Wang
- Performing 3D Similarity Transformation Using theWeighted Total Least-Squares Method / J Lu, Y Chen, X Fang, and B Zheng
- Comparison of Spatial Analyzer and Different Adjustment Programs / C Herrmann, M Lösler, and H Bähr
PART 3 -- Recursive State-Space Filtering
- State-Space Filtering with Respect to Data Imprecision and Fuzziness / I Neumann and H Kutterer
- Unscented Kalman Filter Algorithm with Colored Noise and Its Application in Spacecraft Attitude Estimation / Lifen Sui, Zhongkai Mou, Yu Gan, and Xianyuan Huang
- Principles and Comparisons of Various Adaptively Robust Filters with Applications in Geodetic Positioning / Yuanxi Yang, Tianhe Xu, and Junyi Xu
- Alternative Nonlinear Filtering Techniques in Geodesy for Dual State and Adaptive Parameter Estimation / H Alkhatib
PART 4 -- Sensor Networks and Multi Sensor Systems in Engineering Geodesy
- Parametric Modeling of Static and Dynamic Processes in Engineering Geodesy / A Eichhorn
- Land Subsidence in Mahyar Plain, Central Iran, Investigated Using Envisat SAR Data / M Davoodijam, M Motagh, and M Momeni
- Recent Impacts of Sensor Network Technology on Engineering Geodesy / O Heunecke
- Design of Artificial Neural Networks for Change-Point Detection / H Neuner
- Spatial and Temporal Kinematics of the Inylchek Glacier in Kyrgyzstan Derived from Landsat and ASTER Imagery / M Nobakht, M Motagh, H.U Wetzel, and M.A Sharifi
- Response Automation in Geodetic Sensor Networks by Means of Bayesian Networks / S Horst, H Alkhatib, and H Kutterer
- Efficiency Optimization of Surveying Processes / Ivon Gösseln and H Kutterer
- Modeling and Propagation of Quality Parameters in Engineering Geodesy Processes in Civil Engineering / Jürgen Schweitzer and Volker Schwieger
PART 5 -- Multi-Mission Approaches with View to Physical Processes in the Earth System
- Completion of Band-Limited Data Sets on the Sphere / W-D Schuh, S Müller, and J.M BrockmannNuméro de notice : 15830 Thématique : POSITIONNEMENT Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75494 Réservation
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