Research on lunar regolith of the Chang'E-4 landing site: An automated analysis method based on deep learning framework

IF 2.5 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2024-10-04 DOI:10.1016/j.icarus.2024.116338

Jiahao Deng , Yiqing Qian , Feifei Cui, Yanshuang Liu, Jialong Lai

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引用次数: 0

Abstract

On January 3, 2019, the Chang'E-4 lander successfully landed within the Von Kármán crater, located in the South P ole-Aitken Basin (SPA) on the farside of the Moon (45.5°S, 177.6°E), marking the first soft landing on the lunar farside. The lander, equipped with the Lunar Penetrating Radar (LPR) system, aimed to provide insights into the structure and evolution of the Moon. Previous research often relied on manually identifying hyperbolic features to analyze the lunar shallow subsurface properties. This inefficient approach may lead to subjective biases, resulting in unstable outcomes. This research constructed an automatic analysis framework by integrating the Swin Transformer with a 3D velocity spectrum, which is then applied to analyze the properties of the Chang'E-4 LPR data. The experimental results indicate that the framework achieved a precision of 98.9 % and a recall of 96.7 % in hyperbolic feature identification, with an

F_{1}

of 0.9782 and AP of 94.8 %. Additionally, it has been experimentally validated that the framework can accurately invert hyperbolic features' two-way travel time and velocity. Finally, the framework is applied to analyze the lunar shallow subsurface structure and properties within the landing area of the Chang'E-4 mission.

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嫦娥四号着陆场月岩研究：基于深度学习框架的自动分析方法

2019年1月3日，嫦娥四号着陆器成功着陆在月球远侧南坡艾特肯盆地（SPA）的冯卡尔曼环形山内（南纬45.5°，东经177.6°），这是在月球远侧的首次软着陆。着陆器配备了月球穿透雷达（LPR）系统，旨在深入了解月球的结构和演变。以往的研究通常依靠人工识别双曲线特征来分析月球浅表次表层的特性。这种低效的方法可能会导致主观偏差，造成结果不稳定。本研究通过将斯温变换器与三维速度频谱相结合，构建了一个自动分析框架，并将其应用于分析嫦娥四号月球浅层地表数据的性质。实验结果表明，该框架在双曲线特征识别方面达到了 98.9 % 的精确度和 96.7 % 的召回率，F1 为 0.9782，AP 为 94.8 %。此外，实验还验证了该框架能够准确反演双曲线特征的双向移动时间和速度。最后，该框架被应用于分析嫦娥四号任务着陆区内的月球浅表次表层结构和性质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.