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Descent trajectory reconstruction and landing site positioning of Chang’E-4 on the lunar farside

Author

Listed:
  • Jianjun Liu

    (Chinese Academy of Sciences
    School of Astronomy and Space Science, University of Chinese Academy of Sciences)

  • Xin Ren

    (Chinese Academy of Sciences)

  • Wei Yan

    (Chinese Academy of Sciences)

  • Chunlai Li

    (Chinese Academy of Sciences
    School of Astronomy and Space Science, University of Chinese Academy of Sciences)

  • He Zhang

    (China Academy of Space Technology)

  • Yang Jia

    (China Academy of Space Technology)

  • Xingguo Zeng

    (Chinese Academy of Sciences)

  • Wangli Chen

    (Chinese Academy of Sciences)

  • Xingye Gao

    (Chinese Academy of Sciences)

  • Dawei Liu

    (Chinese Academy of Sciences)

  • Xu Tan

    (Chinese Academy of Sciences)

  • Xiaoxia Zhang

    (Chinese Academy of Sciences)

  • Tao Ni

    (Chinese Academy of Sciences
    School of Astronomy and Space Science, University of Chinese Academy of Sciences)

  • Hongbo Zhang

    (Chinese Academy of Sciences)

  • Wei Zuo

    (Chinese Academy of Sciences)

  • Yan Su

    (Chinese Academy of Sciences)

  • Weibin Wen

    (Chinese Academy of Sciences)

Abstract

Chang’E-4 (CE-4) was the first mission to accomplish the goal of a successful soft landing on the lunar farside. The landing trajectory and the location of the landing site can be effectively reconstructed and determined using series of images obtained during descent when there were no Earth-based radio tracking and the telemetry data. Here we reconstructed the powered descent trajectory of CE-4 using photogrammetrically processed images of the CE-4 landing camera, navigation camera, and terrain data of Chang’E-2. We confirmed that the precise location of the landing site is 177.5991°E, 45.4446°S with an elevation of −5935 m. The landing location was accurately identified with lunar imagery and terrain data with spatial resolutions of 7 m/p, 5 m/p, 1 m/p, 10 cm/p and 5 cm/p. These results will provide geodetic data for the study of lunar control points, high-precision lunar mapping, and subsequent lunar exploration, such as by the Yutu-2 rover.

Suggested Citation

  • Jianjun Liu & Xin Ren & Wei Yan & Chunlai Li & He Zhang & Yang Jia & Xingguo Zeng & Wangli Chen & Xingye Gao & Dawei Liu & Xu Tan & Xiaoxia Zhang & Tao Ni & Hongbo Zhang & Wei Zuo & Yan Su & Weibin We, 2019. "Descent trajectory reconstruction and landing site positioning of Chang’E-4 on the lunar farside," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12278-3
    DOI: 10.1038/s41467-019-12278-3
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    Cited by:

    1. Liang Ding & Ruyi Zhou & Tianyi Yu & Huaiguang Yang & Ximing He & Haibo Gao & Juntao Wang & Ye Yuan & Jia Wang & Zhengyin Wang & Huanan Qi & Jian Li & Wenhao Feng & Xin Li & Chuankai Liu & Shaojin Han, 2024. "Lunar rock investigation and tri-aspect characterization of lunar farside regolith by a digital twin," Nature Communications, Nature, vol. 15(1), pages 1-15, December.

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