A new lunar digital elevation model from the Lunar Orbiter Laser Altimeter and SELENE Terrain Camera

Barker, M. K.; Mazarico, E.; Neumann, Gregory A.; Zuber, M. T.; Haruyama, Junichi; Smith, David E.

doi:10.1016/j.icarus.2015.07.039

Cited by 394 publications

(308 citation statements)

References 24 publications

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“…Even though the 3D positioning performance is worse than the 2D case for VGOS, as discussed in Sect. 3.1, the results are comparable to the vertical accuracy of present digital elevation models (DEM) of the Moon (Barker et al 2016). …”

Section: Estimating the 3d Position Of The Landersupporting

confidence: 74%

Geodetic VLBI with an artificial radio source on the Moon: a simulation study

Kłopotek

Hobiger

Haas

2017

J Geod

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We perform extensive simulations in order to assess the accuracy with which the position of a radio transmitter on the surface of the Moon can be determined by geodetic VLBI. We study how the quality and quantity of geodetic VLBI observations influence these position estimates and investigate how observations of such near-field objects affect classical geodetic parameters like VLBI station coordinates and Earth rotation parameters. Our studies are based on today's global geodetic VLBI schedules as well as on those designed for the next-generation geodetic VLBI system. We use Monte Carlo simulations including realistic stochastic models of troposphere, station clocks, and observational noise. Our results indicate that it is possible to position a radio transmitter on the Moon using today's geodetic VLBI with a two-dimensional horizontal accuracy of better than one meter. Moreover, we show that the nextgeneration geodetic VLBI has the potential to improve the two-dimensional accuracy to better than 5 cm. Thus, our results lay the base for novel observing concepts to improve both lunar research and geodetic VLBI.

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Section: Estimating the 3d Position Of The Landersupporting

confidence: 74%

Geodetic VLBI with an artificial radio source on the Moon: a simulation study

Kłopotek

Hobiger

Haas

2017

J Geod

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“…For Mars, we used MOLA [21] discrete topographic data and the MRO120D [22] gravitational model, both up to degree 120. For the Moon, we adopted the SLDEM2015 elevation model [23] and the gravitational model GRGM900C [24], using their coefficients truncated again only up to degree 180.…”

Section: Input Datasetsmentioning

confidence: 99%

On the Applicability of Molodensky’s Concept of Heights in Planetary Sciences

Tenzer

Foroughi

2018

Geosciences

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Geometric heights, defined with respect to a geometric reference surface, are the most commonly used in planetary studies, but the use of physical heights defined with respect to an equipotential surface (typically the geoid) has been also acknowledged for specific studies (such as gravity-driven mass movements). In terrestrial studies, the geoid is defined as an equipotential surface that best fits the mean sea surface and extends under continents. Since gravimetric geoid modelling under continents is limited by the knowledge of a topographic density distribution, alternative concepts have been proposed. Molodensky introduced the quasigeoid as a height reference surface that could be determined from observed gravity without adopting any hypothesis about the topographic density. This concept is widely used in geodetic applications because differences between the geoid and the quasigeoid are mostly up to a few centimeters, except for mountainous regions. Here we discuss the possible applicability of Molodensky's concept in planetary studies. The motivation behind this is rationalized by two factors. Firstly, knowledge of the crustal densities of planetary bodies is insufficient. Secondly, large parts of planetary surfaces have negative heights, implying that density information is not required. Taking into consideration the various theoretical and practical aspects discussed in this article, we believe that the choice between the geoid and the quasigeoid is not strictly limited because both options have advantages and disadvantages. We also demonstrate differences between the geoid and the quasigeoid on Mercury, Venus, Mars and Moon, showing that they are larger than on Earth.

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“…Recently, Barker et al (2016) produced a lunar DEM by coregistration and combining SELENE TC DEM with LRO laser altimetric data. The model, designated as SLDEM2015, covers latitudes within ±60°, at a horizontal resolution of 512 pixels per degree (~60 m at the equator) and a 3 to 4 m root-meansquare (RMS) elevation residuals to LOLA profiles.…”

Section: Laser Altimetry Datamentioning

confidence: 99%

An Initiative for Construction of New-Generation Lunar Global Control Network Using Multi-Mission Data

Liu

Peng

et al. 2017

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:A lunar global control network provides geodetic datum and control points for mapping of the lunar surface. The widely used Unified Lunar Control Network 2005 (ULCN2005) was built based on a combined photogrammetric solution of Clementine images acquired in 1994 and earlier photographic data. In this research, we propose an initiative for construction of a new-generation lunar global control network using multi-mission data newly acquired in the 21 st century, which have much better resolution and precision than the old data acquired in the last century. The new control network will be based on a combined photogrammetric solution of an extended global image and laser altimetry network. The five lunar laser ranging retro-reflectors, which can be identified in LROC NAC images and have cm level 3D position accuracy, will be used as absolute control points in the least squares photogrammetric adjustment. Recently, a new radio total phase ranging method has been developed and used for high-precision positioning of Chang'e-3 lander; this shall offer a new absolute control point. Systematic methods and key techniques will be developed or enhanced, including rigorous and generic geometric modeling of orbital images, multi-scale feature extraction and matching among heterogeneous multi-mission remote sensing data, optimal selection of images at areas of multiple image coverages, and large-scale adjustment computation, etc. Based on the high-resolution new datasets and developed new techniques, the new generation of global control network is expected to have much higher accuracy and point density than the ULCN2005.

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A new lunar digital elevation model from the Lunar Orbiter Laser Altimeter and SELENE Terrain Camera

Cited by 394 publications

References 24 publications

Geodetic VLBI with an artificial radio source on the Moon: a simulation study

Geodetic VLBI with an artificial radio source on the Moon: a simulation study

On the Applicability of Molodensky’s Concept of Heights in Planetary Sciences

An Initiative for Construction of New-Generation Lunar Global Control Network Using Multi-Mission Data

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