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Potential of Lunar Laser Ranging for the determination of Earth orientation parameters

Biskupek, Liliane und Singh, Vishwa Vijay und Müller, Jürgen und Zhang, Mingyue (2022) Potential of Lunar Laser Ranging for the determination of Earth orientation parameters. IAG International Symposium on Reference Frames for Applications in Geosciences, 2022-10-17 - 2022-10-22, Thessaloniki, Griechenland.

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Offizielle URL: https://www.refag2022.org/

Kurzfassung

The distance between the observatories on the Earth and the retro-reflectors on the Moon has been regularly observed with Lunar Laser Ranging (LLR) since 1970. In recent years, LLR observations have been carried out with bigger telescopes (APOLLO) and at infrared wavelength (OCA, Wettzell), resulting in a better distribution of LLR normal points over the lunar orbit and retro-reflectors with a higher accuracy, also leading to a higher number of LLR observations in total. The analysis of LLR observations has also been improved through refined modeling (e.g., modeling of the lunar core) and changes in the analysis strategy (e.g., optimized calculation of ephemerides). These refinements/modifications enable the determination of various parameters with higher accuracy.By analysing LLR data, Earth Orientation Parameters (EOP) such as the Earth rotation phase deltaUT1, terrestrial pole coordinates, and nutation coefficients, as corrections to the MHB2000 model of the IERS Conventions 2010, can be determined along with other parameters of the Earth-Moon system. Focusing on deltaUT1 and terrestrial pole coordinates from different LLR constellations such as single or multi-station data and for different numbers of normal points per night, the accuracies of the estimated Earth rotation phase and pole coordinates from the new LLR data have improved significantly compared to previous results. We achieved an accuracy of about 20 µs for deltaUT1, about 2.5 mas for xp, and about 3 mas for yp from subsets of the LLR time series containing 10 and 15 normal points per night. Focusing on determining corrections to the nutation coefficients to the MHB2000 model, significantly smaller correction values and higher accuracies with one order of magnitude improvement, i.e., accuracies better than 0.01 mas, are obtained now. Recent results are presented and discussed.

elib-URL des Eintrags:https://elib.dlr.de/192790/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Potential of Lunar Laser Ranging for the determination of Earth orientation parameters
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Biskupek, LilianeLeibniz Universität Hannoverhttps://orcid.org/0000-0002-4204-6838NICHT SPEZIFIZIERT
Singh, Vishwa VijayInstitut für Erdmessung, Leibniz Universität Hannover, Germanyhttps://orcid.org/0000-0003-2973-2435NICHT SPEZIFIZIERT
Müller, JürgenInstitut für Erdmessung, Leibniz Universität Hannover, Germanyhttps://orcid.org/0000-0003-1247-9525NICHT SPEZIFIZIERT
Zhang, MingyueInstitut für Erdmessung, Leibniz Universität Hannoverhttps://orcid.org/0000-0002-2198-1747NICHT SPEZIFIZIERT
Datum:2022
Referierte Publikation:Nein
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:lunar laser ranging, Erdorientierungsparameter
Veranstaltungstitel:IAG International Symposium on Reference Frames for Applications in Geosciences
Veranstaltungsort:Thessaloniki, Griechenland
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:17 Oktober 2022
Veranstaltungsende:22 Oktober 2022
Veranstalter :International Association of Geodesy
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation, Navigation, Quantentechnologien
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KNQ - Kommunikation, Navigation, Quantentechnologie
DLR - Teilgebiet (Projekt, Vorhaben):R - Lunar Laser Ranging
Standort: Hannover
Institute & Einrichtungen:Institut für Satellitengeodäsie und Inertialsensorik > Satellitengeodäsie und geodätische Modellierung
Hinterlegt von: Schilling, Manuel
Hinterlegt am:06 Jan 2023 08:25
Letzte Änderung:24 Apr 2024 20:53

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