Search Results - "Collilieux, Xavier"

ITRF2020: an augmented reference frame refining the modeling of nonlinear station motions by Altamimi, Zuheir, Rebischung, Paul, Collilieux, Xavier, Métivier, Laurent, Chanard, Kristel

“…To better describe the shape of the constantly deforming Earth’s surface, the ITRF2020 is provided as an augmented terrestrial reference frame that precisely…”
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ITRF2014: A new release of the International Terrestrial Reference Frame modeling nonlinear station motions by Altamimi, Zuheir, Rebischung, Paul, Métivier, Laurent, Collilieux, Xavier

“…For the first time in the International Terrestrial Reference Frame (ITRF) history, the ITRF2014 is generated with an enhanced modeling of nonlinear station…”
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ITRF2020 seasonal geocenter motion model by Rebischung, Paul, Altamimi, Zuheir, Collilieux, Xavier, Métivier, Laurent, Chanard, Kristel

“…Precise knowledge of geocenter motion, i.e., the relative motion between the Earth’s center of mass (CM) and the center of figure of the Earth’s surface (CF),…”
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Analysis of the IGS contribution to ITRF2020 by Rebischung, Paul, Altamimi, Zuheir, Métivier, Laurent, Collilieux, Xavier, Gobron, Kevin, Chanard, Kristel

“…As its contribution to the latest release of the International Terrestrial Reference Frame, ITRF2020, the International GNSS Service (IGS) provided a…”
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Are there detectable common aperiodic displacements at ITRF co-location sites? by de La Serve, Maylis, Rebischung, Paul, Collilieux, Xavier, Altamimi, Zuheir, Métivier, Laurent

“…The time evolution of station positions has historically been described by piece-wise linear models in the International Terrestrial Reference Frame (ITRF)…”
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A breakpoint detection in the mean model with heterogeneous variance on fixed time intervals by Bock, Olivier, Collilieux, Xavier, Guillamon, François, Lebarbier, Emilie, Pascal, Claire

“…This work is motivated by an application for the homogenization of global navigation satellite system (GNSS)-derived integrated water vapour series. Indeed,…”
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ITRF2008: an improved solution of the international terrestrial reference frame by Altamimi, Zuheir, Collilieux, Xavier, Métivier, Laurent

“…ITRF2008 is a refined version of the International Terrestrial Reference Frame based on reprocessed solutions of the four space geodetic techniques: VLBI, SLR,…”
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ITRF2014 plate motion model by Altamimi, Zuheir, Métivier, Laurent, Rebischung, Paul, Rouby, Hélène, Collilieux, Xavier

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A factor model approach for the joint segmentation with between‐series correlation by Collilieux, Xavier, Lebarbier, Emilie, Robin, Stéphane

“…We consider the detection of changes in the mean of a set of time series. The breakpoints are allowed to be series specific, and the series are assumed to be…”
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Correlated errors in GPS position time series: Implications for velocity estimates by Santamaría-Gómez, Alvaro, Bouin, Marie-Noëlle, Collilieux, Xavier, Wöppelmann, Guy

“…This study focuses on the effects of time correlation in weekly GPS position time series on velocity estimates. Time series 2.5 to 13 years long from a…”
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Strategies to mitigate aliasing of loading signals while estimating GPS frame parameters by Collilieux, Xavier, van Dam, Tonie, Ray, Jim, Coulot, David, Métivier, Laurent, Altamimi, Zuheir

“…Although GNSS techniques are theoretically sensitive to the Earth center of mass, it is often preferable to remove intrinsic origin and scale information from…”
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IGS08: the IGS realization of ITRF2008 by Rebischung, P., Griffiths, J., Ray, J., Schmid, R., Collilieux, X., Garayt, B.

“…On April 17, 2011, the International GNSS Service (IGS) stopped using the IGS05 reference frame and adopted a new one, called IGS08, as the basis of its…”
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ITRF2020 Plate Motion Model by Altamimi, Z., Métivier, L., Rebischung, P., Collilieux, X., Chanard, K., Barnéoud, J.

“…A tectonic Plate Motion Model (PMM) is essential for geodetic applications, while contributing to the understanding of geodynamic processes affecting the…”
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Quality Assessment of the IDS Contribution to ITRF2008 by Altamimi, Zuheir, Collilieux, Xavier

“…Doppler Orbitography Radiopositionning Integrated by Satellite (DORIS) is one of the four fundamental techniques contributing to the ITRF. The optimal coverage…”
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Singular spectrum analysis for modeling seasonal signals from GPS time series by Chen, Q., van Dam, T., Sneeuw, N., Collilieux, X., Weigelt, M., Rebischung, P.

“…Seasonal signals in GPS time series are of great importance for understanding the evolution of regional mass fluctuations, i.e., ice, hydrology, and ocean…”
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Subseasonal GNSS positioning errors by Ray, J., Griffiths, J., Collilieux, X., Rebischung, P.

“…Global Navigation Satellite System (GNSS) station coordinate errors over seasonal and longer time scales are known to be spatially and temporally correlated…”
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Seasonal low-degree changes in terrestrial water mass load from global GNSS measurements by Meyrath, Thierry, van Dam, Tonie, Collilieux, Xavier, Rebischung, Paul

“…Large-scale mass redistribution in the terrestrial water storage (TWS) leads to changes in the low-degree spherical harmonic coefficients of the Earth’s…”
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Global sea-level rise and its relation to the terrestrial reference frame by Collilieux, Xavier, Wöppelmann, Guy

“…We examined the sensitivity of estimates of global sea-level rise obtained from GPS-corrected long term tide gauge records to uncertainties in the…”
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Mitigating the effects of vertical land motion in tide gauge records using a state-of-the-art GPS velocity field by Santamaría-Gómez, A., Gravelle, M., Collilieux, X., Guichard, M., Míguez, B. Martín, Tiphaneau, P., Wöppelmann, G.

“…This study aims to correct for long-term vertical land motions at tide gauges (TG) by estimating high-accurate GPS vertical velocities at co-located stations…”
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Validation of a corner reflector installation at Côte d’Azur multi-technique geodetic observatory by Collilieux, Xavier, Courde, Clément, Fruneau, Bénédicte, Aimar, Mourad, Schmidt, Guillaume, Delprat, Isabelle, Defresne, Marie-Amélie, Pesce, Damien, Bergerault, Fabien, Wöppelmann, Guy

“…•This paper describes the installation of a SAR corner reflector at Grasse co-location site.•The approach is reproducible and can be recommended for future…”
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