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Characteristics of Novel Differential Lunar Laser Ranging Compared to Classical Lunar Laser Ranging

Zhang, Mingyue and Müller, Jürgen and Biskupek, Liliane and Singh, Vishwa Vijay (2021) Characteristics of Novel Differential Lunar Laser Ranging Compared to Classical Lunar Laser Ranging. Scientific Assembly of the International Association of Geodesy, 2021-06-28 - 2021-07-02, Beijing, China (online).

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A new lunar laser ranging (LLR) station of JPL at the Table Mountain Observatory can allow a novel way of lunar tracking: differential lunar laser ranging (DLLR). There, fast switching between two or more lunar reflectors would be possible in future to get DLLR observations by differencing two consecutive ranges. This new kind of observable will largely decrease the atmospheric and station-related errors, resulting in a very high accuracy of about 30 µm. Using such accurate data will give us the opportunity to obtain better knowledge of the interior and the rotation of the Moon. Additionally, DLLR is expected to improve other parameters of the Earth-Moon dynamics, including those relevant for relativity tests, for example, test of the equivalence principle and a possible time-variation of the gravitational constant G. Presently, our group works on the simulation of DLLR data and investigates its characteristics, like the sensitivity and the impact of different switching intervals by comparing with LLR. DLLR keeps the same sensitivities as LLR for some parameters (group A), for example, the lunar rotation parameters, while it becomes less sensitive to other parameters (group B), such as station positions and velocities, resulting from its cancelling effect on the station part. However, thanks to its excellent measurement accuracy, DLLR can still keep the estimated accuracies for group B at the same level as LLR and significantly enhance the estimation of group A. The correlation between stations and reflectors is increased by DLLR. Nevertheless, larger switching intervals (e.g., 15 min) will be helpful for their decorrelation. In future, we will combine DLLR with classical LLR data to benefit from both observations. In this presentation, we will show first simulation results on the specific characteristics and the benefit of DLLR.

Item URL in elib:https://elib.dlr.de/185892/
Document Type:Conference or Workshop Item (Speech)
Title:Characteristics of Novel Differential Lunar Laser Ranging Compared to Classical Lunar Laser Ranging
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Zhang, MingyueInstitut für Erdmessung, Leibniz Universität Hannoverhttps://orcid.org/0000-0002-2198-1747UNSPECIFIED
Müller, JürgenInstitut für Erdmessung, Leibniz Universität Hannover, Germanyhttps://orcid.org/0000-0003-1247-9525UNSPECIFIED
Biskupek, LilianeLeibniz Universität Hannoverhttps://orcid.org/0000-0002-4204-6838UNSPECIFIED
Singh, Vishwa VijayInstitut für Erdmessung, Leibniz Universität Hannoverhttps://orcid.org/0000-0003-2973-2435UNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Differential Lunar Laser Ranging, Lunar Laser Ranging, Novel geodetic technology
Event Title:Scientific Assembly of the International Association of Geodesy
Event Location:Beijing, China (online)
Event Type:international Conference
Event Start Date:28 June 2021
Event End Date:2 July 2021
Organizer:International Association of Geodesy
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - Lunar Laser Ranging
Location: Hannover
Institutes and Institutions:Institute for Satellite Geodesy and Inertial Sensing > Satellite Geodesy and Geodetic Modelling
Deposited By: Schilling, Manuel
Deposited On:07 Apr 2022 09:40
Last Modified:24 Apr 2024 20:47

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