Topographic modeling and analysis of the landing site of Chang'E-3 on the Moon

Wu, Bo; Li, Fēi; Ye, Lei; Qiao, Si; Hu, Han; Wu, Xingyang; Zhang, He

doi:10.1016/j.epsl.2014.09.009

Cited by 45 publications

(37 citation statements)

References 17 publications

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“…Based on a DEM generated from Terrain Camera (TC) images of SELENE-1, the topography was found to be relatively flat, with an elevation difference of less than 300 m . Wu et al (2014) characterized the slopes and crater distribution at the CE-3 landing site based on multi-source lunar remote sensing data. They found that the candidate landing area was relatively flat, with a slope of less than 15°.…”

Section: Study Area and Datamentioning

confidence: 99%

Rock size-frequency distribution analysis at the Chang’E-3 landing site

Peng

et al. 2016

Planetary and Space Science

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Section: Study Area and Datamentioning

confidence: 99%

Rock size-frequency distribution analysis at the Chang’E-3 landing site

Peng

et al. 2016

Planetary and Space Science

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“…The inconsistencies between our results and those of Hiesinger et al (2003) and Qian et al (2018) may relate to the different studying areas and different size ranges of craters for age estimation. Rock abundance and crater density are important engineering considerations when selecting suitable landing sites for robotic landing missions, so as to avoid hazards during touchdown and ensure better maneuverability of robotic vehicles (Rosa et al, 2012;Wu et al, 2014). Rock abundance and crater density are important engineering considerations when selecting suitable landing sites for robotic landing missions, so as to avoid hazards during touchdown and ensure better maneuverability of robotic vehicles (Rosa et al, 2012;Wu et al, 2014).…”

Section: 1029/2018je005820mentioning

confidence: 99%

Rock Abundance and Crater Density in the Candidate Chang'E‐5 Landing Region on the Moon

Huang

et al. 2018

JGR Planets

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Chang'E‐5 is China's first lunar sample‐return mission, which will be launched in 2019. Understanding the distribution of rocks and craters in the candidate landing region is important for selecting suitable landing sites and studying the surface geology. This paper first separately investigates rock abundance and crater density in the candidate landing region, then provides a joint analysis of them, for the purposes of identifying potential hazards for safe landing and their geological implications. The results indicate that in the region, rocks are mostly concentrated around rocky ejecta craters. About 90% of the region has a rock abundance (the fractional area covered by rocks) of less than 1%. The average crater density is about 250 craters (≥ 100 m in diameter) per 100 km2; on average, 13.5% of the region is covered by craters. The surface ages of geologic units in the region estimated using crater size‐frequency distribution indicate that the eastern part of the region is younger than the western part. The joint analysis of rock abundance and crater density identifies local areas that are relatively unfavorable for safe landing. The joint analysis also indicates an exponential relationship between overall rock abundance and crater density, and a roughly linear relationship between overall rock abundance and surface age. Furthermore, the joint analysis indicates an inverse correlation between rock abundance and the relative maturation of craters. The presented research and results will be helpful for identifying suitable landing sites for the Chang'E‐5 lander. They also provide fresh insights into lunar surface geology.

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“…A EUV Camera (EUVC) of 15 degrees field-of-view was installed in the lander, with angular resolution of 0.095°. The spacecraft successfully landed in the east of Sinus Iridum area of lunar surface on December 14, 2013 (Feng et al 2014;He et al 2013;Wu et al 2014). This EUVC is operated at a centre wavelength of 30.2 nm and the band width of 4.6 nm.…”

Section: Introductionmentioning

confidence: 98%

Geocentric position preliminary detection from the extreme ultraviolet images of Chang’E-3

Chen

Ping

Wang

et al. 2015

Astrophys Space Sci

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An Extreme ultraviolet (EUV) Camera was installed onboard the Chinese lunar surface landing mission, the Chang'E-3 lander, as a useful method to observe the Earth plasmasphere. This EUV optical payload obtained more than 600 moon-based Earth plasmasphere images since December 14, 2013. However, due to errors of unknown size and origin in the platform attitude control of the lander and in the EUV telescope pointing control during the mission operating periods, the geocentric coordinates in these EUV images are not fixed in the same position of CCD pixel. Before adequately calibrating, these positioning offsets will introduce extra errors into the analysis of the plasmaspheric structure. With only a little insufficient telemetry information, an effective calibrating method of circle-based differential algorithm is suggested and demonstrated, for automatically and precisely detecting the geocentric position in each EUV image of Chang'E-3 mission. In each EUV image, the tested method uses the outline of a circle as the basic unit to capture the contour for the bright region based on the spectral characteristic. Then, the center of the extracted circle is adopted as the geocentric position for the image. The preliminary analysis shows that this method can effectively detect the geocentric position being always consistent with the recognition result by the basic hand labor method. It is found that the radius of the circles varies from month to month from December, 2013 to May, 2014. The monthly averages of radius show relative notable positive correlation and negative correlation with the changes of both Zenith angle of the Earth at the landing area of Chang'E-3 lander, and B C. Zheng the Earth-moon distance, respectively. This method and results here will benefit the Chang'E-3 EUV study.

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Topographic modeling and analysis of the landing site of Chang'E-3 on the Moon

Cited by 45 publications

References 17 publications

Rock size-frequency distribution analysis at the Chang’E-3 landing site

Rock size-frequency distribution analysis at the Chang’E-3 landing site

Rock Abundance and Crater Density in the Candidate Chang'E‐5 Landing Region on the Moon

Geocentric position preliminary detection from the extreme ultraviolet images of Chang’E-3

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