Illumination conditions at the lunar south pole using high resolution Digital Terrain Models from LOLA

Gläser, P.; Scholten, F.; Rosa, Diego de la; Figuera, Ramiro Marco; Oberst, J.; Mazarico, E.; Neumann, Gregory A.; Robinson, M. S.

doi:10.1016/j.icarus.2014.08.013

Cited by 67 publications

(62 citation statements)

References 18 publications

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“…Hence, DTMs of high resolution are needed to investigate illumination conditions in small areas, but this implies larger computational times (Acton, ; Gläser et al, ). Nevertheless, the approach presented here proved to be good enough to analyze small areas with high resolution at short time cost.…”

Section: Discussionmentioning

confidence: 99%

“…As a consequence, a whole field of studies in the calculation of illumination on the surface of the Moon and its behavior was carried out. Those studies were focused in thermal properties (Bussey et al, ), planetary missions, especially landers (Speyerer & Robinson, ), and for future human missions (e.g., Gläser et al, , and references therein; Sherwood, ; Stenzel et al, ). The illumination analyses are also important to study geomorphological processes like rock weathering (Wu & Hapke, ) or, in the case of Mars, the evolution of gullies and ice melting processes (Kolb et al, ; Raack et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Illumination simulation codes for the Moon's surface have been thoroughly developed during the last years (Gläser et al, ; Mazarico et al, ; Noda et al, ; Speyerer & Robinson, ). Despite the good results, the development of the different techniques used to analyze light conditions is not straightforward.…”

Section: Introductionmentioning

confidence: 99%

“…Mazarico et al () found advantages by using the so‐called horizon method, which becomes especially effective when looking at the same site over longer time scales involving many time steps. Later, the horizon method was improved by implementing parallel programming computations in either CPUs and/or GPUs (Gläser et al, ; Marco Figuera et al, ).…”

Section: Introductionmentioning

confidence: 99%

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MarsLux: HI‐Resolution Illumination Maps Generator for Mars

Spagnuolo

Carballo

Figuera

et al. 2019

Earth and Space Science

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Illumination simulation codes for the Moon's surface have been thoroughly developed during the last years. Despite works done for the Moon, no studies have investigated the relation between sunlight illumination and the Martian surface applying those codes done for the Moon to Mars. The objective of this work is to describe the development of a surface illumination simulation code, called MarsLux, which allows users to make a detailed investigation of the illumination conditions on Mars, based on its topography and the relative position of the Sun. Our code can derive accurate illumination maps, form topographic data, showing areas that are fully illuminated, areas in total shadow, and areas with partial shade, in short computational times. Although the code does not take into account any atmospheric effect, the results proved to be of high accuracy. The maps generated are useful for geomorphological studies, to study gullies, thermal weathering, or mass wasting processes as well as for producing energy budget maps for future exploration missions.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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MarsLux: HI‐Resolution Illumination Maps Generator for Mars

Spagnuolo

Carballo

Figuera

et al. 2019

Earth and Space Science

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“…To overcome these errors, we previously presented a co-registration technique (Gläser et al, 2013) which greatly improved the relative accuracy. The purpose of co-registering LOLA tracks in our previous work was to derive polar DTMs of high relative consistency for illumination studies (Gläser et al, 2014. In this work, however, we aim at developing a technique to be used globally to derive a set of global LOLA tracks that are correctly positioned with respect to each other and best represent the lunar coordinate frame.…”

Section: Methodsmentioning

confidence: 99%

A New Realization of the Global Lunar Reference Frame Based on Co-Registered Lola Tracks

Gläser

Haase

Oberst

2018

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

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ABSTRACT:We present a method that aligns lunar south and north pole LOLA DTMs using selected LOLA tracks and co-registration techniques. The selected LOLA tracks were then co-registered to the aligned polar DTMs with the aim to create a new LOLA frame of high relative accuracy. At the poles the relative accuracy of the resulting LOLA frame improved in comparison with the original LOLA frame, especially at the north pole. At lower latitudes on the lunar near side we could show that we achieve smaller residuals between our LOLA frame and a photogrammetrically derived reference DTM than with the original LOLA frame. On the far side we could not achieve better results which we believe is stemming from the generally less accurate orbit knowledge there. From the aligned polar DTMs we were able to derive a polar radius of 1738,049 km.

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The Gandalf Staff: A Mobile Tool for Lunar Exploration

Evans

Bacon

Graham

et al. 2022

Preprint

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The Gandalf Staff is a mobile tool designed to be a flexible device supporting crewed and uncrewed operations on the lunar surface. The core of the device is a 24v battery with communications and data storage systems. Initial optional components supporting crewed Extra-Vehicular Activity (EVA) include a LiDAR and 360@ camera. These provide 3D mapping of the traverse for documentation, and to aid future planning. The mapping also creates outreach opportunities for the public to "stand beside" the astronaut in Virtual Reality (VR). The staff provides external lighting for field site illumination in the south polar region low sun angle environment. Navigation instruments for crew position determination with Lunar Search and Rescue (LunaSAR) are also included. The staff itself can be used as a walking aid or as a splint for Incapacitated Crew Rescue (ICR). As a stand-alone device, the staff operates as a long duration untended science platform collecting environmental data and sending it to a lunar base station. The stand-alone mode requires connection to an auxiliary power source (e.g. solar array) and energy storage system (e.g. battery), so it could become an electrical recharging station. To make rapid progress in the 1 st year, and also to demonstrate innovative project management techniques, NASA guided a private industry partner, T STAR, in leading Capstone Engineering student teams at Texas A&M University (TAMU) for proof-of-concept development and testing. These teams developed the power system and demonstrated successful integration of LiDAR, WiFi communications, and external lighting subsystems. Another industry team at Jacobs Technology prototyped a tripod to hold the staff upright.For the 2 nd year (FY'22), NASA will again collaborate with partners to prototype enhanced power and lighting concepts. Year 2 will also add new capability for LunaSAR and geophysical science instrumentation using a heat probe. The heat probe is based upon Apollo heritage but modified to measure subsurface volatile ice regimes at the Artemis landing site. Components of the Gandalf Staff can be developed, tested, and deployed independently, or on the integrated staff, rovers, or utility trailers. The project supports crew safety, lunar sample curation, mission science, and public outreach goals of NASA.

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Illumination conditions at the lunar south pole using high resolution Digital Terrain Models from LOLA

Cited by 67 publications

References 18 publications

MarsLux: HI‐Resolution Illumination Maps Generator for Mars

MarsLux: HI‐Resolution Illumination Maps Generator for Mars

A New Realization of the Global Lunar Reference Frame Based on Co-Registered Lola Tracks

The Gandalf Staff: A Mobile Tool for Lunar Exploration

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