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Lunar Laser Ranging (LLR) measures the distance between observatories on Earth and retro-reflectors on Moon since 1970. In this paper, we study the effect of non-tidal station loading (NTSL) in the analysis of LLR data. We add the non-tidal…

Geophysics · Physics 2021-07-27 Vishwa Vijay Singh , Liliane Biskupek , Jürgen Müller , Mingyue Zhang

Lunar occultation (LO) technique in the near-infrared provides angular resolution down to milliarcseconds on the occulted source even with ground-based 1m class telescopes. LO observations are limited to brighter objects because they…

Solar and Stellar Astrophysics · Physics 2015-06-16 Tapas Baug , Thyagarajan Chandrasekhar

LLR measures the distance between observatories on Earth and retro-reflectors on Moon since 1969. In this paper, we estimate the Earth Rotation Parameters (ERP; terrestrial pole offsets, $x_p$ and $y_p$, and Earth rotation phase,…

Geophysics · Physics 2022-12-20 Vishwa Vijay Singh , Liliane Biskupek , Jürgen Müller , Mingyue Zhang

This work aims to explore the possibilities of determining the long-period part of the precession-nutation of the Earth with techniques other than very long baseline interferometry (VLBI). Lunar laser ranging (LLR) is chosen for its…

Geophysics · Physics 2019-07-03 Yu-Ting Cheng , Jia-Cheng Liu , Zi Zhu

Craters are one of the most studied planetary features used for different scientific analyses, such as estimation of surface age and surface processes. Satellite images utilized for crater detection often have low resolution (LR) due to…

Image and Video Processing · Electrical Eng. & Systems 2024-02-08 Atal Tewari , Nitin Khanna

This research explores the enhancement of lunar landing precision through an advanced structured light system, integrating machine learning, Iterative Learning Control (ILC) and Structured Illumination Microscopy (SIM) techniques. By…

Systems and Control · Electrical Eng. & Systems 2024-10-22 Tarek A. Elsharhawy , P. James Schuck , Shuo Liu , Luc Saikali

The speed of laser light pulses launched from Earth and returned by a retro-reflector on the Moon was calculated from precision round-trip time-of-flight measurements and modeled distances. The measured speed of light (c) in the moving…

General Physics · Physics 2010-06-23 Daniel Y. Gezari

The Moon's permanently shadowed regions (PSRs) are among the coldest places in the Solar System and are expected to become key landing sites for upcoming international space agency missions. Their proximity to peaks of perpetual solar power…

Quantum Physics · Physics 2026-02-09 Jun Ye , Zoey Z. Hu , Ben Lewis , Wei Zhang , Fritz Riehle , Uwe Sterr , Yiqi Ni , Julian Struck

An efficient characterization of scientifically significant locations is essential prior to the return of humans to the Moon. The highest resolution imagery acquired from orbit of south-polar shadowed regions and other relevant locations…

This study introduces a data-driven approach using machine learning (ML) techniques to explore and predict albedo anomalies on the Moon's surface. The research leverages diverse planetary datasets, including high-spatial-resolution albedo…

Earth and Planetary Astrophysics · Physics 2024-07-12 Sofia Strukova , Sergei Gleyzer , Patrick Peplowski , Jason P. Terry

Space debris is a major problem for all space-active nations. Adopting high precision measuring techniques will help to produce the reliable and accurate catalogue for space debris and collision avoidance. Laser Ranging is a kind of…

Instrumentation and Methods for Astrophysics · Physics 2011-10-14 Zhang Zhongping , Yang Fumin , Zhang Haifeng , Wu Zhibo , Chen Juping , Li Pu , Meng Wendong

The precise knowledge of the positions of space debris objects and in particular of defunct satellites is fundamental for satellite operations. Several studies showed that it is possible to improve the accuracy of the orbit determination…

Earth and Planetary Astrophysics · Physics 2019-03-04 E. Cordelli , P. Schlatter , P. Lauber , T. Schildknecht

The Low-Frequency Radio Spectrometer (LFRS) is a scientific payload onboard the Chang'e-4 lunar lander launched in December 2018. The LFRS provides in-situ measurements of the low-frequency radio phenomena on the far-side of the Moon for…

Instrumentation and Methods for Astrophysics · Physics 2021-06-23 Xinying Zhu , Yan Su , Yicai Ji , Hongbo Zhang , Bo Zhao , Xiping Xue , Shun Dai , Junduo Li , Chunlai Li

We present the first constraints on pure-gravity sector Standard-Model Extension (SME) parameters using Lunar Laser Ranging (LLR). LLR measures the round trip travel time of light between the Earth and the Moon. With 34+ years of LLR data,…

General Relativity and Quantum Cosmology · Physics 2016-11-09 James B. R. Battat , John F. Chandler , Christopher Stubbs

The Lunar Electromagnetic Monitor in X-rays (LEM-X) is a proposed wide-field X-ray observatory designed for deployment on the Moon's surface. Its primary scientific goal is to enhance multi-messenger astrophysics by detecting, localizing,…

Crater counting on the Moon and other bodies is crucial to constrain the dynamical history of the Solar System. This has traditionally been done by visual inspection of images, thus limiting the scope, efficiency, and/or accuracy of…

Earth and Planetary Astrophysics · Physics 2018-11-13 Ari Silburt , Mohamad Ali-Dib , Chenchong Zhu , Alan Jackson , Diana Valencia , Yevgeni Kissin , Daniel Tamayo , Kristen Menou

We address the problem of estimating realistic, spatially varying reflectance for complex planetary surfaces such as the lunar regolith, which is critical for high-fidelity rendering and vision-based navigation. Existing lunar rendering…

Computer Vision and Pattern Recognition · Computer Science 2026-01-22 Clementine Grethen , Nicolas Menga , Roland Brochard , Geraldine Morin , Simone Gasparini , Jeremy Lebreton , Manuel Sanchez Gestido

In Papers II and III we show that Transient Lunar Phenomena (TLPs) are likely related to lunar outgassing, albeit in ways not fully understood. Here we propose a path forward, in which current and forthcoming technologies provide a more…

Astrophysics · Physics 2007-06-28 Arlin P. S. Crotts

Lunar laser ranging (LLR) data and Apollo seismic data analyses, revealed independent evidence for the presence of a fluid lunar core. However, the size of the lunar fluid core remained uncertain by $\pm55$ km (encompassing two contrasting…

Ground layer turbulence is a very important site characterization parameter used to assess the quality of an astronomical site. The Lunar Scintillometer is a simple and effective site-testing device for measuring the ground layer…

Instrumentation and Methods for Astrophysics · Physics 2018-02-02 Avinash Surendran , Padmakar S. Parihar , Ravinder K Banyal , Anusha Kalyaan