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Reducing the draconitic errors in GNSS geodetic products
Systematic errors at harmonics of the GPS draconitic year have been found in diverse GPS-derived geodetic products like the geocenter $$Z$$Z-component, station coordinates, $$Y$$Y-pole rate and…
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Second-degree Stokes coefficients from multi-satellite SLR
The long wavelength part of the Earth’s gravity field can be determined, with varying accuracy, from satellite laser ranging (SLR). In this study, we investigate the combination of up to ten geodetic…
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Non-linear station motions in epoch and multi-year reference frames
In the conventions of the International Earth Rotation and Reference Systems Service (e.g. IERS Conventions 2010), it is recommended that the instantaneous station position, which is fixed to the…
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The new DGFI-TUM realization of the ITRS: DTRF2014 (data)
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Laser geodetic satellites: a high-accuracy scientific tool
Satellite Laser Ranging (SLR) began in the mid-1960s on satellites of opportunity with retro-reflectors intended as a part of intercomparison tests of satellite tracking techniques. Shortly…
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The 2008 DGFI realization of the ITRS: DTRF2008
A new realization of the International Terrestrial System was computed at the ITRS Combination Centre at DGFI as a contribution to ITRF2008. The solution is labelled DTRF2008. In the same way as in…
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Satellite Laser Ranging
Satellite Laser Ranging (SLR) is currently the unique technique to determine station coordinates, Earth Orientation Parameters (EOPs) and Stokes coefficients of the Earth’s gravity field from one…
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The key role of Satellite Laser Ranging towards the integrated estimation of geometry, rotation and gravitational field of the Earth
In this thesis, laser ranging observations to satellites (SLR) are used to study correlations of fundamental geodetic parameters such as station coordinates, Earth orientation parameters and…
Consistent realization of Celestial and Terrestrial Reference Frames
TLDR
The results show that the selection of local ties is most critical to the TRF, and the standard deviations of the EOP and the CRF improve by the inter-technique combination which indicates the benefits of a common estimation of all parameters.
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Comparison of latest ITRS realizations: ITRF2014, DTRF2014 and JTRF2014
TLDR
An overview of the combination strategies of the three ITRS Combination Centres is given and the results of the comparisons which have been performed at DGFI-TUM are summarized.
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