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| Titel |
A refined LLR model for the determination of relativistic parameters, secular tidal acceleration and UT0 |
| VerfasserIn |
Franz Hofmann, Liliane Biskupek, Jürgen Müller |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250033934
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| Zusammenfassung |
| Lunar Laser Ranging (LLR) is carried out for more than 40 years. The data set is analysed in a weighted least-squares adjustment to determine several parameters of the Earth-Moon-system, e.g. the moon’s tidal acceleration, lunar orbit and earth orientation parameters. Furthermore, LLR allows for testing relativity, e.g. the strong equivalence principle or the time variability of the gravitational constant.
A further step on the way to mm-accurate LLR analysis is the refined modelling of the moon’s interior which mainly affects the moon’s rotation. The previous modelling of the moon as a homogeneous, elastic and dissipative body has been extended by the contribution of a possible fluid core.
Based on the refined modelling and using LLR data from 1970 to 2009 the following studies are conducted:
- test of relativistic properties, like strong equivalence principle, non-linearity or relativistic precession,
- frequency dependent modelling of secular tidal acceleration,
- determination of UT0 and comparison with IERS C04 series.
Corresponding results are presented and discussed. |
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