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Dive into the research topics where Mathias Fritsche is active.

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Featured researches published by Mathias Fritsche.


Journal of Geodesy | 2015

Accuracy and reliability of multi-GNSS real-time precise positioning: GPS, GLONASS, BeiDou, and Galileo

Xingxing Li; Maorong Ge; Xiaolei Dai; Xiaodong Ren; Mathias Fritsche; Jens Wickert; Harald Schuh

In this contribution, we present a GPS+GLONASS+BeiDou+Galileo four-system model to fully exploit the observations of all these four navigation satellite systems for real-time precise orbit determination, clock estimation and positioning. A rigorous multi-GNSS analysis is performed to achieve the best possible consistency by processing the observations from different GNSS together in one common parameter estimation procedure. Meanwhile, an efficient multi-GNSS real-time precise positioning service system is designed and demonstrated by using the multi-GNSS Experiment, BeiDou Experimental Tracking Network, and International GNSS Service networks including stations all over the world. The statistical analysis of the 6-h predicted orbits show that the radial and cross root mean square (RMS) values are smaller than 10 cm for BeiDou and Galileo, and smaller than 5 cm for both GLONASS and GPS satellites, respectively. The RMS values of the clock differences between real-time and batch-processed solutions for GPS satellites are about 0.10 ns, while the RMS values for BeiDou, Galileo and GLONASS are 0.13, 0.13 and 0.14 ns, respectively. The addition of the BeiDou, Galileo and GLONASS systems to the standard GPS-only processing, reduces the convergence time almost by 70 %, while the positioning accuracy is improved by about 25 %. Some outliers in the GPS-only solutions vanish when multi-GNSS observations are processed simultaneous. The availability and reliability of GPS precise positioning decrease dramatically as the elevation cutoff increases. However, the accuracy of multi-GNSS precise point positioning (PPP) is hardly decreased and few centimeter are still achievable in the horizontal components even with 40


Scientific Reports | 2015

Precise positioning with current multi-constellation Global Navigation Satellite Systems: GPS, GLONASS, Galileo and BeiDou

Xingxing Li; Xiaohong Zhang; Xiaodong Ren; Mathias Fritsche; Jens Wickert; Harald Schuh


Journal of Climate | 2010

Validation of Precipitable Water Vapor within the NCEP/DOE Reanalysis Using Global GPS Observations from One Decade

Sibylle Vey; Reinhard Dietrich; Axel Rülke; Mathias Fritsche; Peter Steigenberger; Markus Rothacher

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Surveys in Geophysics | 2014

Assessing the Current Evolution of the Greenland Ice Sheet by Means of Satellite and Ground-Based Observations

Andreas Groh; Heiko Ewert; Mathias Fritsche; Axel Rülke; R. Rosenau; Mirko Scheinert; Reinhard Dietrich


Archive | 2010

Mass Variation Signals in GRACE Products and in Crustal Deformations crustal deformation from GPS: A Comparison

Martin Horwath; Axel Rülke; Mathias Fritsche; Reinhard Dietrich

∘ elevation cutoff. At 30


In: Drewes H. (Ed.) Geodetic Reference Frames, IAG Symposia | 2009

Effects of Different Antenna Phase Center Models on GPS-Derived Reference Frames

Peter Steigenberger; Markus Rothacher; R Schmid; Axel Rülke; Mathias Fritsche; Reinhard Dietrich; V Tesmer


Geologica Acta | 2007

Regional geoid determination in Tierra del Fuego including GPS levelling

Daniel Del Cogliano; Reinhard Dietrich; Andreas Richter; Raul Perdomo; J. L. Hormaechea; Gunter Liebsch; Mathias Fritsche

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Journal of Geophysical Research | 2014

Height changes over subglacial Lake Vostok, East Antarctica: Insights from GNSS observations

Andreas Richter; Sergey V. Popov; Mathias Fritsche; Valery V. Lukin; Alexey Yu. Matveev; Alexey Ekaykin; Vladimir Ya. Lipenkov; Denis V. Fedorov; Lutz Eberlein; Ludwig Schröder; Heiko Ewert; Martin Horwath; Reinhard Dietrich


Geophysical Research Letters | 2009

Anomalous ocean load tide signal observed in lake‐level variations in Tierra del Fuego

Andreas Richter; J. L. Hormaechea; Reinhard Dietrich; Raul Perdomo; Mathias Fritsche; D. Del Cogliano; Gunter Liebsch; Luciano Pedro Oscar Mendoza

∘ and 40


Geophysical Research Letters | 2014

Observed crustal uplift near the Southern Patagonian Icefield constrains improved viscoelastic Earth models

H. Lange; Gino Casassa; Erik R. Ivins; Ludwig Schröder; Mathias Fritsche; Andreas Richter; Andreas Groh; Reinhard Dietrich

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Reinhard Dietrich

Dresden University of Technology

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Axel Rülke

Dresden University of Technology

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Jens Schröter

Alfred Wegener Institute for Polar and Marine Research

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Sandra-Esther Brunnabend

Alfred Wegener Institute for Polar and Marine Research

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Sibylle Vey

Dresden University of Technology

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