嫦娥四号冯•卡门撞击坑着陆区地形及月面遮挡分析

Translated title of the contribution: Topographic and occlusion analysis of the Chang'E-4 landing site in the Von Kármán crater

Fei Li, Bo Wu, Mei Yang, Yang Zhao, He Zhang, Xueying Wu, Yingqiao Xu, Qing Ye

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

The Chang'E-4 lunar probe successfully made a soft landing on the far side of the Moon, the first such landing in the history. To determine the powered-descent control strategy and operational programs for the lunar surface, a detailed analysis was carried out on the key factors of the surface topography in the Von Kármán cater. It included the elevations, slopes, distribution densities of craters and rocks, as well as the terrain occlusions to sun illumination and communication signals between the probe and the relay satellite. The analysis was based on images collected by the Chang'E-2 satellite and the images and laser range measurements acquired by the Lunar Reconnaissance Orbiter. This paper presents the topographic and occlusion analysis results of the Chang'E-4 landing site in the Von Kármán crater. The methods for topographic and occlusion analysis are described in detail. This paper also presents a comparative study of the topographic features in the Chang'E-4 landing area and the Chang'E-3 landing area in Sinus Iridum, on the near side of the Moon. Finally, the precise landing location of Chang'E-4 is presented, and the above-mentioned terrain occlusions are analyzed. The analytical methods described in this paper have demonstrated their effectiveness in real operations and can benefit future missions involving soft landings on celestial bodies.

Translated title of the contributionTopographic and occlusion analysis of the Chang'E-4 landing site in the Von Kármán crater
Original languageChinese (Simplified)
Pages (from-to)1385-1396
Number of pages12
JournalZhongguo Kexue Jishu Kexue/Scientia Sinica Technologica
Volume49
Issue number12
DOIs
Publication statusPublished - 1 Dec 2019

Keywords

  • Chang'E-4
  • Landing site
  • Occlusion
  • Topography
  • Von Kármán crater

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Networks and Communications

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