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Chapter
EPOS-OC, a Universal Software Tool for Satellite Geodesy at GFZ
The adjustment of parameters from different observations describing the state and change of system Earth has been conducted at the Helmholtz Centre Potsdam—GFZ German Research Centre for Geosciences via satell...
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Chapter and Conference Paper
Impacts of the LARES and LARES-2 Satellite Missions on the SLR Terrestrial Reference Frame
LARES, an Italian satellite launched in 2012, and its successor LARES-2 approved by the Italian Space Agency, aim at the precise measurement of frame dragging predicted by General Relativity and other tests of...
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Article
Open AccessReference system origin and scale realization within the future GNSS constellation “Kepler”
Currently, Global Navigation Satellite Systems (GNSS) do not contribute to the realization of origin and scale of combined global terrestrial reference frame (TRF) solutions due to present system design limita...
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Article
Future SLR station networks in the framework of simulated multi-technique terrestrial reference frames
Currently, the requirements of the Global Geodetic Observing System are not yet met by the latest global terrestrial reference frames (TRF). In this study, we assess potential TRF improvements by future SLR ne...
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Article
On the impact of local ties on the datum realization of global terrestrial reference frames
Local ties (LTs) at co-located sites are currently used to combine different single-technique solutions to determine global terrestrial reference frames (TRFs). We assess by simulations the impact of different...
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Chapter
Measurement of Frame Dragging with Geodetic Satellites Based on Gravity Field Models from CHAMP, GRACE and Beyond
The experimental measurement of frame-dragging or the Lense-Thirring (LT) effect based on Satellite Laser Ranging (SLR) observations to the LAGEOS satellites was successfully demonstrated with an accuracy of a...
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Chapter
Tests of General Relativity with the LARES Satellites
LARES (LAser RElativity Satellite) developed by the Italian Space Agency (ASI) is a laser-ranged satellite successfully launched in February 2012 by ESA (European Space Agency). A second ASI laser-ranged satel...
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Chapter and Conference Paper
The Assessment of the Temporal Evolution of Space Geodetic Terrestrial Reference Frames
The assessment of the accuracy and the stability of the global Terrestrial Reference Frames (TRFs) is a matter of great importance for the geodetic community. The classical Helmert transformation plays a cruci...
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Chapter and Conference Paper
A Non-tidal Atmospheric Loading Model: On Its Quality and Impacts on Orbit Determination and C20 from SLR
Based on European Centre for Medium-Range Weather Forecasts (ECMWF) ERA-Interim data we model displacements of global station coordinates due to non-tidal atmospheric loading based on Farrel’s theory. We compa...
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Chapter and Conference Paper
Simulation of VLBI Observations to Determine a Global TRF for GGOS
In this study, we present a global terrestrial reference frame (TRF) from simulated very long baseline interferometry (VLBI) observations. In the time span from 2008 until 2014, 695 standard VLBI rapid turnaro...
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Article
A Global Terrestrial Reference Frame from simulated VLBI and SLR data in view of GGOS
In this study, we assess the impact of two combination strategies, namely local ties (LT) and global ties (GT), on the datum realization of Global Terrestrial Reference Frames in view of the Global Geodetic Ob...
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Article
Open AccessManagement science in the era of smart consumer products: challenges and research perspectives
Smart products not only provide novel functionalities, but also may establish new business models, markets, or distribution channels, strengthen relationships with consumers, and/or add smart remote services. ...
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Chapter and Conference Paper
GGOS-SIM: Simulation of the Reference Frame for the Global Geodetic Observing System
The accuracy and stability requirements for the International Terrestrial Reference Frame (ITRF) postulated by the Global Geodetic Observing System (GGOS) are not met so far. The GGOS–SIM project builds a soft...
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Chapter
Zukunft der globalen Geodäsie und Fernerkundung aus Sicht des Deutschen GeoForschungsZentrum (GFZ), Potsdam
Die Technologien und Methoden der Globalen Geodäsie und Fernerkundung (GGF) haben sich in den vergangenen Dekaden mit rascher Geschwindigkeit weiterentwickelt und die Resultate der heutigen GGF liefern wichti...
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Chapter and Conference Paper
A Geocenter Time Series from a Combination of LAGEOS and GRACE Observations
The geocenter motion can be inferred by evaluating Satellite Laser Ranging (SLR) observations to the LAGEOS satellites. Within the dynamic orbit determination process the degree 1 coefficients of a spherical h...
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Chapter and Conference Paper
Atmospheric Loading and Mass Variation Effects on the SLR-Defined Geocenter
The geocenter time series can conveniently be inferred by evaluating satellite orbit perturbations in a dynamical model. We base our approach on nearly 30 years of Satellite Laser Ranging (SLR) observations to...
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Living Reference Work Entry In depth
Zukunft der globalen Geodäsie und Fernerkundung aus Sicht des Deutschen GeoForschungsZentrum (GFZ), Potsdam
Die Technologien und Methoden der Globalen Geodäsie und Fernerkundung (GGF) haben sich in den vergangenen Dekaden mit rascher Geschwindigkeit weiterentwickelt und die Resultate der heutigen GGF liefern wichtig...
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Chapter and Conference Paper
Submonthly GRACE Solutions from Localizing Integral Equations and Kalman Filtering
An alternative approach for the analysis of GRACE inter-satellite range observations being processed in combination with current best knowledge GRACE orbits from improved GPS relative integer ambiguity fixing ...
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Chapter
GFZ RL05: An Improved Time-Series of Monthly GRACE Gravity Field Solutions
After publishing its release 04 (RL04) time-series of monthly GRACE gravity field solutions starting end of 2006, GFZ has reprocessed this time-series based on numerous changes covering reprocessed instrument ...
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Chapter and Conference Paper
Possibilities and Limits for Estimating a Dynamic and a Geometric Reference Frame Origin by the Integrated Approach Applied to the CHAMP–GRACE–GPS Constellation
The integrated approach, i.e. the simultaneous processing of GPS satellites and Low Earth Orbiters (LEOs), for satellite orbit determination and estimation of Earth system parameters, is applied to the CHAMP–G...
